CN113284025A

CN113284025A - Flood early warning method and flood early warning device

Info

Publication number: CN113284025A
Application number: CN202110531568.6A
Authority: CN
Inventors: 高姣姣; 颜宇森; 田勇; 朱杰; 肖秋平; 韩超; 尚掩库; 宗乐斌; 胡海燕
Original assignee: Beijing Zhongdi Huaan Environmental Engineering Co ltd
Current assignee: Beijing Zhongdi Huaan Technology Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-08-20
Anticipated expiration: 2041-05-14
Also published as: CN113284025B

Abstract

The present disclosure provides a flood early warning method, including: and determining an effective flood early warning division, wherein an oil-gas pipeline is laid in the effective flood early warning division, the oil-gas pipeline passes through n flow points of m rivers, p hydrological stations are arranged on the m rivers, m, n and p are integers, and m is more than or equal to p and is more than or equal to 3. And determining the influence area of the river at each flow-through point on the oil and gas pipeline. And dividing the effective flood early warning region into p adjacent polygonal regions by using the position information of the p hydrological stations according to an equidistant polygon method, wherein rivers flowing through the same polygonal region have the same flood early warning level. And determining the flood early warning level of the oil and gas pipeline at each flow point according to the flood early warning level corresponding to the polygonal area in which each flow point falls. And obtaining a flood early warning result of the oil and gas pipeline based on the river influence area at each flow point and the flood early warning level at each flow point. In addition, this disclosure still provides a flood early warning device.

Description

Flood early warning method and flood early warning device

Technical Field

The disclosure relates to the technical field of geological disaster early warning, in particular to a flood early warning method and a flood early warning device.

Background

China has complex water systems and numerous rivers, and a trunk line of an oil and gas pipeline with a laying distance of tens of thousands of kilometers inevitably passes through or spans numerous rivers. China is one of the countries with frequent and serious flood disasters in the world, and river floods frequently occurring in the flood season are closely related to human beings every year, so that disasters are brought, resources are provided, and the oil and gas pipeline bears huge flood threat risks.

However, in the face of the threat of river flood, a flood early warning method for oil and gas pipelines is lacked in the related technology, so that the flood early warning cannot be timely sent out according to the condition of the river flood, and precautionary measures cannot be timely taken for the oil and gas pipelines.

Disclosure of Invention

Aiming at the blank research in the flood early warning field of oil and gas pipelines, the disclosure aims to provide a flood early warning method for the oil and gas pipelines so as to solve the early warning problem that the oil and gas pipelines crossing or crossing rivers are threatened by flood.

One aspect of the present disclosure provides a flood early warning method, including: determining an effective flood early warning division, wherein an oil-gas pipeline is laid in the effective flood early warning division, the oil-gas pipeline passes through n flow-through points of m rivers, p hydrological stations are arranged on the m rivers, m, n and p are integers, and m is greater than or equal to p and is greater than or equal to 3; determining the influence area of the river at each flow point on the oil and gas pipeline; dividing the effective flood warning area into p polygonal areas adjacent to each other according to an equidistant polygon method by using the position information of the p hydrologic stations, wherein rivers flowing through the same polygonal area have the same flood warning level; determining the flood early warning level of the oil and gas pipeline at each flow point according to the flood early warning level corresponding to the polygonal area in which each flow point falls; and obtaining a flood early warning result of the oil and gas pipeline based on the river influence area at each flow point and the flood early warning level at each flow point.

According to an embodiment of the present disclosure, the determining an influence area of the river at each flow-through point on the oil and gas pipeline includes: determining the river grade of each flow-through point, wherein the river grade sequentially comprises a main flow, a primary branch flow, a secondary branch flow and a tertiary branch flow from high to low; determining a river influencing buffer zone at each of the flow points based on the river grade, wherein the width of the river influencing buffer zone decreases as the river grade decreases; determining an oil and gas pipeline buffer area at each flow point; and determining the influence area of the river at each flow point on the oil and gas pipeline according to the river influence buffer area at each flow point and the oil and gas pipeline buffer area.

According to an embodiment of the present disclosure, the determining the influence region of the river at each flow-through point on the oil and gas pipeline according to the river influence buffer region at each flow-through point and the oil and gas pipeline buffer region includes: superposing the river influence buffer area and the oil and gas pipeline buffer area at each flow point, wherein the river influence buffer area comprises a primary buffer area close to the center line of the river and a secondary buffer area except the primary buffer area; determining the overlapping area of the primary buffer area and the oil-gas pipeline buffer area as the central area of the influence area of the river at each flow-through point on the oil-gas pipeline; and determining the overlapping area of the secondary buffer area and the oil and gas pipeline buffer area as the edge area of the influence area of the river at each flow-through point on the oil and gas pipeline.

According to an embodiment of the present disclosure, the dividing the effective flood warning area into p polygonal areas adjacent to each other according to an equidistant polygon method using the position information of the p hydrologic stations includes: drawing an initial polygon consisting of p edges in the effective flood early warning area by using the position information of the p hydrological stations; obtaining main boundaries of the p polygonal regions adjacent to each other by using the midpoint of each of the p sides as a perpendicular line to the boundary of the effective flood warning partition; and a centroid connecting the initial polygons, and the main boundaries of the p polygonal regions and the boundaries of the effective flood warning zone to divide the effective flood warning zone into p polygonal regions adjacent to each other.

According to an embodiment of the present disclosure, the method further includes: acquiring river hydrological data acquired by each hydrological station, wherein the river hydrological data are used for representing the river water level of a river in which the hydrological station is located; obtaining an early warning water level within the effective flood early warning zone, wherein the early warning water level comprises a guaranteed water level, a armed water level, and a armed water level, the guaranteed water level being higher than the armed water level, the armed water level being higher than the armed water level; and determining flood early warning levels corresponding to the p polygonal areas into which the p hydrological stations fall based on the relationship between the river water level and the early warning water level.

According to an embodiment of the present disclosure, the determining flood warning levels corresponding to the p polygonal areas into which the p hydrological stations fall based on the relationship between the river level and the warning level includes: determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is flood-free early warning under the condition that the river water level is lower than the fortification water level; determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is a three-level flood early warning under the condition that the river water level is not lower than the fortifying water level and lower than the warning water level; determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is a secondary flood early warning under the condition that the river water level is not lower than the warning water level and lower than the guaranteed water level; and determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is a first-level flood early warning under the condition that the river water level is higher than the guaranteed water level.

According to an embodiment of the present disclosure, the determining the flood warning level of the oil and gas pipeline at each of the flow-through points includes: and determining the flood early warning levels of the oil and gas pipelines at each flow point in turn according to the sequence of the flood early warning levels corresponding to the p polygonal areas from high to low, wherein the early warning levels are a first-level flood early warning, a second-level flood early warning, a third-level flood early warning and a flood-free early warning from high to low.

According to an embodiment of the present disclosure, the method further includes: and superposing and displaying the river influence area of each flow point and the flood early warning level of each flow point, wherein the display effects of the primary flood early warning, the secondary flood early warning, the tertiary flood early warning and the flood-free early warning are different.

Another aspect of the present disclosure provides a flood early warning device, including: the system comprises a first determination module, a second determination module and a third determination module, wherein the first determination module is used for determining an effective flood early warning division, an oil-gas pipeline is laid in the effective flood early warning division, the oil-gas pipeline passes through n flow-through points of m rivers, p hydrological stations are arranged on the m rivers, m, n and p are integers, and m is more than or equal to p and is more than or equal to 3; the second determination module is used for determining the influence area of the river at each flow-through point on the oil and gas pipeline; a dividing module, configured to divide the effective flood warning area into p adjacent polygonal areas according to an equidistant polygon method using the position information of the p hydrologic stations, where rivers flowing through the same polygonal area have the same flood warning level; a third determining module, configured to determine, according to a flood early warning level corresponding to the polygonal area in which each flow point falls, a flood early warning level of the oil and gas pipeline at each flow point; and the first obtaining module is used for obtaining the flood early warning result of the oil and gas pipeline based on the river influence area at each flow point and the flood early warning level at each flow point.

According to an embodiment of the present disclosure, the second determining module includes: the first determining submodule is used for determining the river grade of each flow point, wherein the river grade sequentially comprises a main flow, a first-level branch flow, a second-level branch flow and a third-level branch flow from high to low; a second determination submodule for determining a river influence surge region at each of the flow points based on the river level, the width of the river influence surge region decreasing with a decrease in the river level; the third determining submodule is used for determining an oil and gas pipeline buffer area at each flow-through point; and the fourth determining submodule is used for determining the influence area of the river at each flowing point on the oil and gas pipeline according to the river influence buffer area at each flowing point and the oil and gas pipeline buffer area.

According to an embodiment of the present disclosure, the fourth determining sub-module includes: the stacking unit is used for stacking the river influence buffering area at each flow point and the oil and gas pipeline buffering area, wherein the river influence buffering area comprises a primary buffering area close to the center line of a river and a secondary buffering area except the primary buffering area; a first determining unit, configured to determine an overlapping area of the primary buffer area and the oil and gas pipeline buffer area as a central area of an influence area of a river at each flow point on the oil and gas pipeline; and the second determining unit is used for determining the overlapping area of the secondary buffer area and the oil and gas pipeline buffer area as the edge area of the influence area of the river at each flow point on the oil and gas pipeline.

According to an embodiment of the present disclosure, the dividing module includes: a drawing submodule, configured to draw an initial polygon composed of p edges in the effective flood warning area using the position information of the p hydrologic stations; an obtaining submodule, configured to obtain main boundaries of the p polygonal regions adjacent to each other by using a midpoint of each of the p edges as a perpendicular line to a boundary of the effective flood warning partition; a partitioning submodule for connecting centroids of the initial polygons, main boundaries of the p polygon areas, and boundaries of the effective flood warning area to partition the effective flood warning area into p polygon areas adjacent to each other.

According to an embodiment of the present disclosure, the apparatus further includes: the acquisition module is used for acquiring river hydrological data acquired by each hydrological station, wherein the river hydrological data are used for representing the river level of a river where the hydrological station is located; a second obtaining module, configured to obtain an early warning water level in the effective flood early warning region, where the early warning water level includes a guaranteed water level, a armed water level, and a armed water level, the guaranteed water level is higher than the armed water level, and the armed water level is higher than the armed water level; and a fourth determining module, configured to determine flood early warning levels corresponding to the p polygonal areas into which the p hydrological stations fall based on a relationship between the river level and the early warning level.

According to an embodiment of the present disclosure, the fourth determining module is configured to: determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is flood-free early warning under the condition that the river water level is lower than the fortification water level; determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is a three-level flood early warning under the condition that the river water level is not lower than the fortifying water level and lower than the warning water level; determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is a secondary flood early warning under the condition that the river water level is not lower than the warning water level and lower than the guaranteed water level; and determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is a first-level flood early warning under the condition that the river water level is higher than the guaranteed water level.

According to an embodiment of the present disclosure, the third determining module is configured to: and determining the flood early warning levels of the oil and gas pipelines at each flow point in turn according to the sequence of the flood early warning levels corresponding to the p polygonal areas from high to low, wherein the early warning levels are a first-level flood early warning, a second-level flood early warning, a third-level flood early warning and a flood-free early warning from high to low.

According to an embodiment of the present disclosure, the apparatus further includes: and the display module is used for displaying the river influence area of each flow point and the flood early warning level of each flow point in a superposed manner, wherein the primary flood early warning, the secondary flood early warning, the tertiary flood early warning and the flood-free early warning have different display effects.

Another aspect of the present disclosure provides an electronic device including: one or more processors, a memory for storing one or more programs, wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method as described above.

Another aspect of the present disclosure provides a computer-readable storage medium storing computer-executable instructions for implementing the method as described above when executed.

Another aspect of the disclosure provides a computer program comprising computer executable instructions for implementing the method as described above when executed.

According to the embodiment of the disclosure, in the determined effective flood early warning division, the flood early warning result of the oil and gas pipeline is obtained based on the river influence area at each flow point and the flood early warning grade at each flow point, so that the blank of research on the oil and gas pipeline in the flood early warning field in the related technology can be at least partially filled, the flood early warning can be timely sent out according to the condition of river flood, and precautionary measures can be timely taken on the oil and gas pipeline.

Drawings

Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings.

Fig. 1 schematically illustrates an application scenario of a flood warning method according to an embodiment of the present disclosure;

fig. 2 schematically shows a flow chart of a flood warning method according to an embodiment of the present disclosure;

fig. 3 schematically shows a flow chart of a flood warning method according to another embodiment of the present disclosure;

FIG. 4 schematically illustrates a diagram of an area of influence of an oil and gas pipeline by a river flood according to an embodiment of the present disclosure;

FIG. 5 schematically illustrates an equidistant polygon map according to an embodiment of the disclosure;

fig. 6 schematically illustrates a flood warning result diagram according to an embodiment of the present disclosure;

fig. 7 schematically shows a block diagram of a flood warning apparatus according to an embodiment of the present disclosure;

fig. 8 schematically shows a schematic diagram of a computer readable storage medium product adapted to implement the flood warning method described above according to an embodiment of the present disclosure; and

fig. 9 schematically shows a block diagram of an electronic device adapted to implement the flood warning method described above according to an embodiment of the present disclosure.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components. All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.

Where a convention analogous to "at least one of A, B and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B and C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.). Where a convention analogous to "A, B or at least one of C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B or C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).

Some block diagrams and/or flow diagrams are shown in the figures. It will be understood that some blocks of the block diagrams and/or flowchart illustrations, or combinations thereof, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable flood warning device such that the instructions, which execute via the processor, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks. The techniques of this disclosure may be implemented in hardware and/or software (including firmware, microcode, etc.). In addition, the techniques of this disclosure may take the form of a computer program product on a computer-readable storage medium having instructions stored thereon for use by or in connection with an instruction execution system.

The flood early warning method provided by the disclosure relates to the field of geological disaster early warning, in particular to the field of flood early warning of long-distance oil and gas pipelines crossing or crossing rivers, can provide a method for judging the flood early warning level of a single river under the condition that the oil and gas pipelines cross or cross the rivers, and also provides an equidistant polygon method for judging the flood early warning level of a plurality of rivers under the condition that the oil and gas pipelines cross or cross a plurality of rivers but hydrologic data in partial areas are not complete by defining the concept of the flood early warning division of the oil and gas pipelines and combining the hydrologic similarity principle in the same flood early warning division.

For simplicity of explanation, the flood warning method provided by the present disclosure will be explained in the context of the present disclosure by taking the number m of rivers as 4, the number n of flowing points as 7, and the number p of hydrologic stations as 3 as examples.

Fig. 1 schematically shows an application scenario of a flood early warning method according to an embodiment of the present disclosure.

According to an embodiment of the present disclosure, the application scenario 100 includes 4 rivers (river 1, river 2, river 3, river 4, respectively), 3 hydrological stations (hydrological station a, hydrological station B, hydrological station C, respectively) and oil and gas pipelines that are mainly developed.

As shown in fig. 1, each river develops a main stream and a branch stream, and in order to collect hydrologic data of the river, a hydrologic station may be generally set up on the main stream of the river. Specifically, a hydrological station a is set up on the main stream of the river 1, a hydrological station B is set up on the main stream of the river 2, and a hydrological station C is set up on the main stream of the river 3. The oil and gas pipeline passes through or spans a river 1, a river 3, a river 4 and a river 2 from north to south, and the intersection positions of the oil and gas pipeline and the 4 rivers comprise 7 positions which are respectively a, b, c, d, e, f and g. The intersection point position of the oil and gas pipeline crossing or crossing the river 1 and the river 1 comprises a, b and c, namely one branch flow of the oil and gas pipeline crossing or crossing the river 1, the intersection point position of the oil and gas pipeline crossing or crossing the river 1 is a, the main flow of the oil and gas pipeline crossing or crossing the river 1 is b, the intersection point position of the other branch flow of the oil and gas pipeline crossing or crossing the river 1 and the river 1 is c. The intersection position of the oil and gas pipeline crossing or crossing the main flow of the river 3 and the river 3 is d. The oil and gas pipeline crosses or spans the river 4, and the intersection positions formed by the oil and gas pipeline and the river 4 comprise e and f, namely the intersection position of the oil and gas pipeline and the river 4 is e, the intersection position of the oil and gas pipeline and the river 4 is a main flow, and the intersection position of the oil and gas pipeline and the river 4 is f. The intersection position of the oil and gas pipeline crossing or crossing the main flow of the river 2 and the river 2 is g.

It can be understood that there are many rivers that the oil and gas pipeline crosses or spans, and the number of hydrological stations is very limited (for example, the hydrological stations are set up in river 1, river 2 and river 3, but no hydrological station is set up in the main stream and branch stream of river 4), so that the hydrological data of river 4 is lost, and the flood warning in the area where the oil and gas pipeline crosses or spans river 4 cannot be predicted. The method fills the blank of the river oil and gas pipeline flood early warning field due to the fact that hydrologic data are lost, forms a theoretical method of oil and gas pipeline flood early warning, and provides a method basis for carrying out flood early warning work on the oil and gas pipeline.

Fig. 2 schematically shows a flow chart of a flood warning method according to an embodiment of the present disclosure.

As shown in fig. 2, the flood warning method 200 may include operations S210 to S250.

In operation S210, an effective flood early warning division is determined, an oil and gas pipeline is laid in the effective flood early warning division, the oil and gas pipeline passes through n flow points of m rivers, p hydrological stations are set on the m rivers, m, n, and p are integers, and m is greater than or equal to p is greater than or equal to 3.

In the present disclosure, the oil and gas pipeline may cross the river through the river or the oil and gas pipeline may cross the river. The large, medium and small rivers that the oil and gas pipeline passes through or spans are numerous, but the number of hydrologic stations is very limited. Some rivers that have not yet set up hydrology station cause certain degree of difficulty for the flood early warning of oil and gas pipeline because of the lack of hydrology data. In order to solve the flood early warning problem of the oil and gas pipeline in the hydrologic data partial missing area, the flood early warning division concept of the oil and gas pipeline is provided in the disclosure.

Specifically, the flood early warning division of the oil and gas pipeline is a constraint boundary of flood early warning grading of the oil and gas pipeline in a certain large range, the same division has similar hydrological conditions, and the difference of the hydrological conditions among different divisions is large. The oil and gas pipeline flood early warning division determines the level boundary of flood early warning in the area. If a single river is taken as an early warning division, the early warning representation range is too small, the river flood early warning without hydrologic data or incomplete hydrologic data nearby is ignored, and some safety risks faced by the oil and gas pipelines are exposed outside an early warning area; if a large drainage basin is taken as an early warning division, the range of early warning representatives is overlarge, and an overlarge safety area is divided into the early warning area, so that the early warning and troubleshooting cost is increased. Because the range of the early warning division is too small or too large in the flood early warning of the oil and gas pipeline, the three-stage basin range is proposed as the flood early warning division range of the oil and gas pipeline by comparing the hydrological characteristics of the basin and the route trend of the oil and gas pipeline. And the oil and gas pipeline flood early warning area which is penetrated by the existing oil and gas pipeline is called an effective oil and gas pipeline flood early warning area, and the oil and gas pipeline flood early warning area which is not penetrated by the existing oil and gas pipeline is called an ineffective oil and gas pipeline flood early warning area.

In operation S220, an influence region of the river at each of the flow-through points on the oil and gas pipeline is determined.

According to the embodiment of the disclosure, the influence area ranges of the rivers on the oil and gas pipelines at different flowing points can be the same or different, and the specific conditions are determined according to the rivers and the oil and gas pipelines.

In operation S230, the effective flood warning region is divided into p polygonal regions adjacent to each other according to an equidistant polygon method using the position information of the p hydrologic stations, and rivers flowing through the same polygonal region have the same flood warning level.

According to an embodiment of the present disclosure, the effective flood warning zone is divided into a plurality of closed p polygonal areas adjacent to each other.

In operation S240, the flood warning level of the oil and gas pipeline at each flow point is determined according to the flood warning level corresponding to the polygonal area in which each flow point falls.

According to the embodiment of the disclosure, once the flood early warning level of the river where the hydrological station is located is determined, the flood early warning level of the river through which the hydrological station is located and the flood early warning level of the flowing-through point which the hydrological station falls in are the same as the flood early warning level of the river where the hydrological station is located in the polygonal area where the hydrological station is located.

In operation S250, a flood warning result of the oil and gas pipeline is obtained based on the river affected area at each flow-through point and the flood warning level at each flow-through point.

Through the embodiment of the disclosure, in the determined effective flood early warning division, the flood early warning result of the oil and gas pipeline is obtained based on the river influence area at each flow point and the flood early warning grade at each flow point, so that the blank of research on the oil and gas pipeline in the flood early warning field in the related technology can be at least partially filled, the flood early warning can be timely sent out according to the condition of river flood, and precautionary measures can be timely taken on the oil and gas pipeline.

Fig. 3 schematically shows a flow chart of a flood warning method according to another embodiment of the present disclosure.

As shown in fig. 3, the flood warning method 300 may include operations S310 to S380.

In operation S310, oil and gas pipeline data is collected. In operation S320, river hydrological data is collected. In operation S330, a valid flood warning zone is determined. In operation S340, a river flood influence range is determined. In operation S350, an influence range of the flood on the oil and gas pipeline is determined. In operation S360, a flood warning result of the single river to the oil and gas pipeline is obtained. In operation S370, flood warning results of the plurality of rivers to the oil and gas pipeline are obtained through an equidistant polygon method. Specifically, the flood warning range of the oil and gas pipeline of the river where the hydrologic station is located is determined according to the hydrologic data of the hydrologic station, then equidistant polygons are drawn in the effective flood warning regions determined in operation S330, and finally the flood warning levels of a plurality of rivers flowing through the polygons are determined. In operation S380, a flood warning result of the oil and gas pipeline is obtained.

As an alternative embodiment, determining the area of influence of the river at each flow-through point on the oil and gas pipeline comprises: determining the river grade of each flow-through point, wherein the river grade sequentially comprises a main flow, a primary branch flow, a secondary branch flow and a tertiary branch flow from high to low; determining a river impact buffering area at each flow-through point based on the river level, wherein the width of the river impact buffering area decreases as the river level decreases; determining an oil and gas pipeline buffer area at each flow-through point; and determining the influence area of the river at each flow point on the oil and gas pipeline according to the river influence buffer area and the oil and gas pipeline buffer area at each flow point.

Since the higher the rank of the river, the closer it is to the river, the greater the threat the river flood poses to the oil and gas pipelines. The present disclosure determines the influence range of river flood based on collected hydrologic data of a single river provided with hydrologic stations. During specific implementation, hydrologic data of the river is analyzed and researched to determine a main stream, a first-level branch stream, a second-level branch stream and a third-level branch stream of the river, and then a first-level buffer area and a second-level buffer area for representing a river flood influence range are drawn according to the principle that the width of the buffer areas sequentially decreases from the main stream to the third-level branch stream of the river, wherein the ranges of the first-level buffer area and the second-level buffer area are different. Specifically, the area range near the center line of the river may be defined as a primary buffer area, and the area range outside the primary buffer area may be defined as a secondary buffer area.

As an alternative embodiment, determining the influence zone of the river on the oil and gas pipeline at each flow-through point according to the river influence buffer zone and the oil and gas pipeline buffer zone at each flow-through point comprises: superposing the river influence buffer area and the oil and gas pipeline buffer area at each flow point, wherein the river influence buffer area comprises a primary buffer area close to the middle line of the river and a secondary buffer area except the primary buffer area; determining the overlapping area of the primary buffer area and the oil and gas pipeline buffer area as the central area of the influence area of the river at each flow-through point on the oil and gas pipeline; and determining the overlapping area of the secondary buffer area and the oil and gas pipeline buffer area as the edge area of the influence area of the river at each flow-through point on the oil and gas pipeline.

According to the embodiment of the disclosure, not only the relevant data of the oil and gas pipeline need to be collected, but also the hydrological data of the river need to be collected, based on the collected relevant data, the buffer area of the oil and gas pipeline can be determined, the flood influence buffer area (namely the influence range of river flood) can also be determined, and the flood influence buffer area can be divided into a first-level buffer area and a second-level buffer area. On this basis, the oil gas pipeline buffer zone and the flood influence buffer zone that will determine superpose, select the intersection region between two buffer zones, just can determine the influence range of river flood to the oil gas pipeline. It should be noted that the influence range in the present disclosure may be divided into a central area and an edge area, where the central area is an oil and gas pipeline river flood early warning central area, and the edge area is an oil and gas pipeline river flood early warning edge area.

Fig. 4 schematically shows a diagram of an area of influence of an oil and gas pipeline by a river flood according to an embodiment of the present disclosure. Based on the collected relevant data of the oil and gas pipeline, a flood warning buffer zone of the oil and gas pipeline (areas on two sides of the oil and gas pipeline as shown in fig. 4) can be determined. The method comprises the following steps of dividing an area range close to a river central line into a primary buffer area, dividing an area range outside the primary buffer area into a secondary buffer area, taking the intersection of an oil and gas pipeline flood early warning buffer area and the primary buffer area, determining an oil and gas pipeline flood early warning central area (such as a slash covering area shown in figure 4), taking the intersection of the oil and gas pipeline flood early warning buffer area and the secondary buffer area, and determining an oil and gas pipeline flood early warning edge area (such as a dashed line covering area shown in figure 4).

And determining the flood early warning level of the oil and gas pipeline of the single river according to the hydrologic data of the single river with the hydrologic station. Optionally, the method further includes: acquiring river hydrological data acquired by each hydrological station, wherein the river hydrological data is used for representing the river level of a river in which the hydrological station is located; obtaining an early warning water level in an effective flood early warning area, wherein the early warning water level comprises a guaranteed water level, a warning water level and a fortifying water level, the guaranteed water level is higher than the warning water level, and the warning water level is higher than the fortifying water level; and determining flood early warning levels corresponding to the p polygonal areas into which the p hydrological stations fall based on the relationship between the river water level and the early warning water level.

In the present disclosure, the armed water level Zj refers to a water level at which dangerous situations may occur in river reaches when the water level rises to a river section, and generally speaking, the great river or the great river with the dike is mostly determined by the water level of flood general flood plain or water immersion dike feet of an important dike section, and is a water level when the dangerous situations of the dike may gradually increase. When the river water level is lower than the guard water level Zj, the oil and gas pipelines still can be threatened by flood, so the guard water level Zs is arranged below the river guard water level Zj. The guaranteed water level Zb refers to a water level at which the embankment project can guarantee safe operation, is also called a maximum flood control water level or a hazard water level, and refers to a designed water level of the embankment or a historically protected maximum water level.

As an optional embodiment, determining flood early warning levels corresponding to p polygonal areas into which p hydrological stations fall based on a relationship between a river level and an early warning level includes: determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is flood-free early warning under the condition that the river water level is lower than the fortification water level; under the condition that the river water level is not lower than a defense water level and lower than a warning water level, determining that the flood early warning level corresponding to the polygonal area where the hydrological station falls is a three-level flood early warning; determining the flood early warning level corresponding to the polygonal area into which the hydrological station falls as a secondary flood early warning under the condition that the river water level is not lower than the warning water level and lower than the guaranteed water level; and determining the flood early warning level corresponding to the polygonal area into which the hydrological station falls as a first-level flood early warning under the condition that the river water level is high and the water level is guaranteed.

In the present disclosure, it may be determined in the relationship between the river level Z and the armed level Zs, the armed level Zj, and the guaranteed level Zb. In specific implementation, if the river water level Z is less than the fortification water level Zs, no early warning is given. If the defense water level Zs is less than or equal to the river water level Z and less than the warning water level Zj, three-level early warning (yellow early warning) is carried out, which generally indicates that the oil and gas pipeline crossing the river is greatly threatened by flood. If the warning water level Zj is less than or equal to the river water level Z and less than the guaranteed water level Zb, the second-stage early warning (orange early warning) is performed, and if the river water level Z is greater than the guaranteed water level Zb, the first-stage early warning (red early warning) is performed, and at the moment, the oil and gas pipeline which is worn (strides) across the river is greatly threatened by flood.

As an alternative embodiment, dividing the effective flood warning area into p polygonal areas adjacent to each other according to an equidistant polygon method using position information of p hydrologic stations includes: drawing an initial polygon consisting of p edges in the effective flood early warning region by using the position information of the p hydrological stations; taking the midpoint of each edge of the p edges as a perpendicular line to the boundary of the effective flood early warning division to obtain the main boundaries of p adjacent polygonal areas; the centroid of the initial polygon, the main boundaries of the p polygon areas and the boundaries of the effective flood warning zone are connected to divide the effective flood warning zone into p polygon areas adjacent to each other.

FIG. 5 schematically illustrates an equidistant polygon map according to an embodiment of the disclosure. As shown in fig. 5, adjacent hydrologic stations (i.e. the hydrologic station a and the hydrologic station B, the hydrologic station B and the hydrologic station C, and the hydrologic station C and the hydrologic station a) are connected, a node of a polygon is taken from a midpoint of a connecting line connecting the adjacent hydrologic stations, distances from the node to the hydrologic stations at both ends of the connecting line are equal, and a boundary from the node to the early warning division is taken as a vertical line, so that main boundaries of a plurality of adjacent polygons with equal distances can be obtained. From the centroids of the triangles connected to the nodes to close the polygon, 3 polygons are obtained, polygon 1, polygon 2, and polygon 3.

As an alternative embodiment, determining the flood warning level of the oil and gas pipeline at each flow-through point comprises: according to the sequence from high to low of flood early warning grades corresponding to the p polygonal areas, the flood early warning grade of the oil and gas pipeline at each flow-through point is determined in sequence, and the early warning grades are a first-level flood early warning, a second-level flood early warning, a third-level flood early warning and a flood-free early warning from high to low.

And judging the flood early warning level of the hydrological station according to the hydrological data collected by the hydrological station and the flood early warning distinguishing mode of the single river, wherein the hydrological station A is a secondary pipeline flood early warning, the hydrological station B is a non-early warning, and the hydrological station C is a tertiary pipeline flood early warning. Therefore, it can be determined that the river 1 in which the hydrological station A is located is a secondary pipeline flood early warning, the river 2 in which the hydrological station B is located is not early warning, and the river 3 in which the hydrological station C is located is a tertiary pipeline flood early warning. It should be noted that the flood early warning and distinguishing method for a single river is as described above, and is not described herein again.

Due to the fact that the oil and gas pipeline passes through or crosses over the river terminal, in order to avoid the problem of conflict of flood early warning levels, in the method, the river pipeline flood early warning levels except for the river 1, the river 2 and the river 3 are determined in sequence by crossing over the polygon with the highest flood early warning level in the multiple equidistant polygons. In specific implementation, the highest flood warning level among the polygons 1, 2, and 3 is the polygon 1 and the polygon 3. Therefore, the river flowing through the polygon 1 can be determined to be early-warning for the secondary pipeline flood from the polygon 1, the river flowing through the polygon 2 is not early-warning, and the river flowing through the polygon 3 is early-warning for the third level. Namely, the branch of the river 1 and the branch of the river 3 are pre-warning for the second-level pipeline flood, the branch of the river 4 and the right branch are pre-warning for the third-level pipeline flood, and the branch of the river 2 and the left branch of the river 4 are not pre-warning.

As an alternative embodiment, the method further comprises: and superposing and displaying the river influence area at each flow point and the flood early warning level at each flow point, wherein the display effects of the primary flood early warning, the secondary flood early warning, the tertiary flood early warning and the flood-free early warning are different.

Fig. 6 schematically shows a flood warning result diagram according to an embodiment of the present disclosure. As shown in fig. 6, after the pipeline flood early warning levels of the main stream and the tributary of the river are determined, that is, the flood early warning levels at the positions where the pipeline passes through or crosses the river are determined, the display effect of the flood early warning may include, but is not limited to, an early warning color and an early warning graphic size corresponding to the early warning levels. And 7 flow points are arranged at the positions where the oil and gas pipelines pass through or cross rivers in the early warning region, secondary flood early warning is determined at the positions a, b and c, the early warning graphic representation can be represented by orange, tertiary early warning is performed at the positions d and e, the early warning graphic representation can be represented by yellow, and no early warning is performed at the positions f and g. And obtaining the flood early warning result of the oil and gas pipeline according to the flood early warning central area (shown by oblique lines in the figure) and the flood early warning edge area (shown by dotted lines in the figure) of the oil and gas pipeline, which determine the flood early warning grades at each flow-through point. In order to facilitate viewing, the flood early warning result at each flow-through point can be amplified and displayed, and the amplification display effect of the flood early warning result of the oil and gas pipeline at the position d is taken as an example, and the display effect is shown in fig. 6.

Fig. 7 schematically shows a block diagram of a flood warning apparatus according to an embodiment of the present disclosure.

As shown in fig. 7, the apparatus 700 may include a first determination module 710, a second determination module 720, a division module 730, a third determination module 740, and a first obtaining module 750.

The first determining module 710 is configured to determine an effective flood early warning division, an oil and gas pipeline is laid in the effective flood early warning division, the oil and gas pipeline passes through n flow points of m rivers, p hydrological stations are set on the m rivers, m, n, and p are integers, and m is greater than or equal to p and is greater than or equal to 3. Optionally, the first determining module 710 may be configured to perform the operation S210, for example, and is not described herein again.

And a second determining module 720, which is used for determining the influence area of the river at each flow-through point on the oil and gas pipeline. Optionally, the second determining module 720 may be configured to perform the foregoing operation S220, for example, and is not described herein again.

The dividing module 730 is configured to divide the effective flood early warning region into p adjacent polygonal regions according to an equidistant polygon method using the position information of the p hydrologic stations, where rivers flowing through the same polygonal region have the same flood early warning level. Optionally, the dividing module 730 may be configured to perform the foregoing operation S230, for example, and is not described herein again.

The third determining module 740 is configured to determine the flood early warning level of the oil and gas pipeline at each flow point according to the flood early warning level corresponding to the polygonal area in which each flow point falls. Optionally, the third determining module 740 may be configured to perform the aforementioned operation S240, for example, and is not described herein again.

The first obtaining module 750 is configured to obtain a flood early warning result of the oil and gas pipeline based on the river affected area at each flow-through point and the flood early warning level at each flow-through point. Optionally, the first obtaining module 750 may be configured to perform the foregoing operation S250, for example, and is not described herein again.

As an alternative embodiment, the second determining module includes: the first determining submodule is used for determining the river level of each flow point, wherein the river level sequentially comprises a main flow, a first-level branch flow, a second-level branch flow and a third-level branch flow from high to low; a second determination submodule for determining a river influence buffer area at each of the flow-through points based on the river level, wherein the width of the river influence buffer area decreases as the river level decreases; the third determining submodule is used for determining an oil and gas pipeline buffer area at each flow-through point; and the fourth determination submodule is used for determining the influence area of the river at each flowing point on the oil and gas pipeline according to the river influence buffer area and the oil and gas pipeline buffer area at each flowing point.

As an alternative embodiment, the fourth determination submodule includes: the stacking unit is used for stacking the river influence buffering area and the oil and gas pipeline buffering area at each flow point, wherein the river influence buffering area comprises a primary buffering area close to the center line of the river and a secondary buffering area except the primary buffering area; the first determining unit is used for determining a superposed region of the primary buffer region and the oil and gas pipeline buffer region as a central region of an influence region of a river at each flow-through point on the oil and gas pipeline; and the second determination unit is used for determining the overlapping area of the secondary buffer area and the oil and gas pipeline buffer area as the edge area of the influence area of the river at each flow-through point on the oil and gas pipeline.

As an alternative embodiment, the dividing module includes: the drawing submodule is used for drawing an initial polygon consisting of p edges in the effective flood early warning division by using the position information of the p hydrological stations; the obtaining submodule is used for obtaining main boundaries of p polygonal areas adjacent to each other by taking the middle point of each edge in p edges as a perpendicular line to the boundary of the effective flood early warning division; and a partitioning submodule for connecting the centroid of the initial polygon, the main boundaries of the p polygon areas and the boundaries of the effective flood warning zone to partition the effective flood warning zone into p polygon areas adjacent to each other.

As an optional embodiment, the flood warning apparatus further includes: the acquisition module is used for acquiring river hydrological data acquired by each hydrological station, wherein the river hydrological data is used for representing the river level of a river where the hydrological station is located; a second obtaining module, configured to obtain an early warning water level in the effective flood early warning partition, where the early warning water level includes a guaranteed water level, a warning water level, and a fortifying water level, the guaranteed water level is higher than the warning water level, and the warning water level is higher than the fortifying water level; and the fourth determining module is used for determining flood early warning levels corresponding to the p polygonal areas into which the p hydrological stations fall based on the relationship between the river water level and the early warning water level.

As an alternative embodiment, the fourth determining module is configured to: determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is flood-free early warning under the condition that the river water level is lower than the fortification water level; under the condition that the river water level is not lower than a defense water level and lower than a warning water level, determining that the flood early warning level corresponding to the polygonal area where the hydrological station falls is a three-level flood early warning; determining the flood early warning level corresponding to the polygonal area into which the hydrological station falls as a secondary flood early warning under the condition that the river water level is not lower than the warning water level and lower than the guaranteed water level; and determining the flood early warning level corresponding to the polygonal area into which the hydrological station falls as a first-level flood early warning under the condition that the river water level is high and the water level is guaranteed.

As an alternative embodiment, the third determining module is configured to: and determining the flood early warning levels of the oil and gas pipeline at each flow point in turn according to the sequence of the flood early warning levels corresponding to the p polygonal areas from high to low, wherein the early warning levels are a first-level flood early warning, a second-level flood early warning, a third-level flood early warning and a flood-free early warning from high to low in turn.

As an optional embodiment, the flood warning apparatus further includes: and the display module is used for displaying the river influence area of each flow-through point and the flood early warning level of each flow-through point in a superposed manner, wherein the display effects of the primary flood early warning, the secondary flood early warning, the tertiary flood early warning and the flood-free early warning are different.

It should be noted that the implementation, solved technical problems, realized functions, and achieved technical effects of each module in the partial embodiment of the flood early warning apparatus are respectively the same as or similar to the implementation, solved technical problems, realized functions, and achieved technical effects of each corresponding step in the partial embodiment of the flood early warning method, and are not described herein again.

Any number of modules, sub-modules, units, sub-units, or at least part of the functionality of any number thereof according to embodiments of the present disclosure may be implemented in one module. Any one or more of the modules, sub-modules, units, and sub-units according to the embodiments of the present disclosure may be implemented by being split into a plurality of modules. Any one or more of the modules, sub-modules, units, sub-units according to embodiments of the present disclosure may be implemented at least in part as a hardware circuit, such as a field programmable gate array (FNGA), a programmable logic array (NLA), a system on a chip, a system on a substrate, a system on a package, an Application Specific Integrated Circuit (ASIC), or may be implemented in any other reasonable manner of hardware or firmware by integrating or packaging a circuit, or in any one of or a suitable combination of software, hardware, and firmware implementations. Alternatively, one or more of the modules, sub-modules, units, sub-units according to embodiments of the disclosure may be at least partially implemented as a computer program module, which when executed may perform the corresponding functions.

For example, the first determining module, the second determining module, the dividing module, the third determining module, the first obtaining module, the first determining submodule, the second determining submodule, the third determining submodule, the fourth determining submodule, the superimposing unit, the first determining unit, the second determining unit, the drawing submodule, the obtaining submodule, the dividing submodule, the obtaining module, the second obtaining module, the fourth determining module, and the displaying module may be combined and implemented in one module, or any one of the modules may be split into a plurality of modules. Alternatively, at least part of the functionality of one or more of these modules may be combined with at least part of the functionality of the other modules and implemented in one module. According to an embodiment of the present disclosure, at least one of the first determining module, the second determining module, the dividing module, the third determining module, the first obtaining module, the first determining submodule, the second determining submodule, the third determining submodule, the fourth determining submodule, the superimposing unit, the first determining unit, the second determining unit, the drawing submodule, the obtaining submodule, the dividing submodule, the obtaining module, the second obtaining module, the fourth determining module, and the presenting module may be at least partially implemented as a hardware circuit, such as field programmable gate arrays (FNGAs), programmable logic arrays (NLAs), systems on a chip, systems on a substrate, systems on a package, Application Specific Integrated Circuits (ASICs), or may be implemented in hardware or firmware in any other reasonable way of integrating or packaging circuits, or in any one of three implementations, software, hardware and firmware, or in any suitable combination of any of them. Alternatively, at least one of the first determining module, the second determining module, the dividing module, the third determining module, the first obtaining module, the first determining submodule, the second determining submodule, the third determining submodule, the fourth determining submodule, the superimposing unit, the first determining unit, the second determining unit, the drawing submodule, the obtaining submodule, the dividing submodule, the obtaining module, the second obtaining module, the fourth determining module and the displaying module may be at least partially implemented as a computer program module, and when the computer program module is executed, the corresponding function may be executed.

Fig. 8 schematically shows a schematic diagram of a computer-readable storage medium product adapted to implement the flood warning method described above according to an embodiment of the present disclosure.

In some possible embodiments, aspects of the present invention may also be implemented in a form of a program product including program code for causing a device to perform the aforementioned operations (or steps) in the flood warning method according to various exemplary embodiments of the present invention described in the above-mentioned "exemplary method" section of this specification when the program product is run on the device, for example, the electronic device may perform the operations as shown in fig. 2 to 6.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (ENROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

As shown in fig. 8, a flood warning program product 800, which may employ a portable compact disc read only memory (CD-ROM) and include program code and may be run on a device, such as a personal computer, is depicted in accordance with an embodiment of the present invention. However, the program product of the present invention is not limited in this respect, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, or device.

A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, or device. Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a local area network (LAA) or a wide area network (WAA), or may be connected to an external computing device (e.g., through the internet using an internet service provider).

Fig. 9 schematically shows a block diagram of an electronic device adapted to implement the flood warning method described above according to an embodiment of the present disclosure. The electronic device shown in fig. 9 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.

As shown in fig. 9, an electronic apparatus 900 according to an embodiment of the present disclosure includes a processor 901 which can perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)902 or a program loaded from a storage portion 908 into a Random Access Memory (RAM) 903. Processor 901 may comprise, for example, a general purpose microprocessor (e.g., a CNU), an instruction set processor and/or related chip sets and/or a special purpose microprocessor (e.g., an Application Specific Integrated Circuit (ASIC)), among others. The processor 901 may also include on-board memory for caching purposes. The processor 901 may comprise a single processing unit or a plurality of processing units for performing the different actions of the method flows according to embodiments of the present disclosure.

In the RAM 903, various programs and data necessary for the operation of the electronic apparatus 900 are stored. The processor 901, the ROM902, and the RAM 903 are connected to each other through a bus 904. The processor 901 performs various operations of the method flows according to the embodiments of the present disclosure by executing programs in the ROM902 and/or the RAM 903. Note that the programs may also be stored in one or more memories other than the ROM902 and the RAM 903. The processor 901 may also perform various operations illustrated in fig. 2-6 according to embodiments of the present disclosure by executing programs stored in the one or more memories.

Electronic device 900 may also include input/output (I/O) interface 905, input/output (I/O) interface 905 also connected to bus 904, according to an embodiment of the present disclosure. The system 900 may also include one or more of the following components connected to the I/O interface 905: an input portion 906 including a keyboard, a mouse, and the like; an output section 907 including components such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage portion 908 including a hard disk and the like; and a communication section 909 including a network interface card such as an LAA card, a modem, or the like. The communication section 909 performs communication processing via a network such as the internet. The drive 910 is also connected to the I/O interface 905 as necessary. A removable medium 911 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 910 as necessary, so that a computer program read out therefrom is mounted into the storage section 908 as necessary.

According to embodiments of the present disclosure, method flows according to embodiments of the present disclosure may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable storage medium, the computer program containing program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 909, and/or installed from the removable medium 911. The computer program, when executed by the processor 901, performs the above-described functions defined in the system of the embodiment of the present disclosure. The systems, devices, apparatuses, modules, units, etc. described above may be implemented by computer program modules according to embodiments of the present disclosure.

The present disclosure also provides a computer-readable storage medium, which may be contained in the apparatus/device/system described in the above embodiments; or may exist separately and not be assembled into the device/apparatus/system. The computer-readable storage medium carries one or more programs, which when executed, implement a flood warning method according to an embodiment of the present disclosure, including the operations shown in fig. 2 to 6.

According to embodiments of the present disclosure, the computer-readable storage medium may be a non-volatile computer-readable storage medium, which may include, for example but is not limited to: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (ENROM or flash memory), a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. For example, according to embodiments of the present disclosure, a computer-readable storage medium may include the ROM902 and/or the RAM 903 described above and/or one or more memories other than the ROM902 and the RAM 903.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Those skilled in the art will appreciate that various combinations and/or combinations of features recited in the various embodiments and/or claims of the present disclosure can be made, even if such combinations or combinations are not expressly recited in the present disclosure. In particular, various combinations and/or combinations of the features recited in the various embodiments and/or claims of the present disclosure may be made without departing from the spirit or teaching of the present disclosure. All such combinations and/or associations are within the scope of the present disclosure.

The embodiments of the present disclosure have been described above. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described separately above, this does not mean that the measures in the embodiments cannot be used in advantageous combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the present disclosure, and such alternatives and modifications are intended to be within the scope of the present disclosure.

Claims

1. A flood early warning method comprises the following steps:

determining an effective flood early warning division, wherein an oil-gas pipeline is laid in the effective flood early warning division, the oil-gas pipeline passes through n flow-through points of m rivers, p hydrological stations are arranged on the m rivers, m, n and p are integers, and m is greater than or equal to p and is greater than or equal to 3;

determining the influence area of the river at each flow-through point on the oil and gas pipeline;

dividing the effective flood early warning division into p adjacent polygonal areas according to an equidistant polygon method by using the position information of the p hydrological stations, wherein rivers flowing through the same polygonal area have the same flood early warning level;

determining the flood early warning level of the oil and gas pipeline at each flow point according to the flood early warning level corresponding to the polygonal area in which each flow point falls; and

and obtaining a flood early warning result of the oil and gas pipeline based on the river influence area at each flow-through point and the flood early warning level at each flow-through point.

2. The method of claim 1, wherein the determining an area of influence of a river at each flow-through point on the oil and gas pipeline comprises:

determining the river grade of each flow-through point, wherein the river grade sequentially comprises a main flow, a primary branch flow, a secondary branch flow and a tertiary branch flow from high to low;

determining a river impact buffering area at each of the flow-through points based on the river grade, wherein the width of the river impact buffering area decreases as the river grade decreases;

determining an oil and gas pipeline buffer area at each flow-through point; and

and determining the influence area of the river at each flow-through point on the oil and gas pipeline according to the river influence buffer area at each flow-through point and the oil and gas pipeline buffer area.

3. The method of claim 2, wherein the determining an area of influence of a river at each flow-through point on the oil and gas pipeline from the river impact buffer area at each flow-through point and the oil and gas pipeline buffer area comprises:

superposing the river influence buffer area and the oil and gas pipeline buffer area at each flow point, wherein the river influence buffer area comprises a primary buffer area close to the middle line of the river and a secondary buffer area except the primary buffer area;

determining the overlapping area of the primary buffer area and the oil and gas pipeline buffer area as the central area of the influence area of the river at each flow-through point on the oil and gas pipeline; and

and determining the overlapping area of the secondary buffer area and the oil and gas pipeline buffer area as the edge area of the influence area of the river at each flow-through point on the oil and gas pipeline.

4. The method of claim 1, wherein the dividing the effective flood warning zone into p polygonal areas adjacent to each other according to an equidistant polygon method using the position information of the p hydrologic stations comprises:

drawing an initial polygon consisting of p edges in the effective flood early warning region by using the position information of the p hydrological stations;

obtaining main boundaries of the p polygonal areas adjacent to each other by taking the midpoint of each edge of the p edges as a perpendicular line to the boundary of the effective flood early warning zone; and

connecting centroids of the initial polygons, main boundaries of the p polygonal areas and boundaries of the effective flood warning zone to divide the effective flood warning zone into p polygonal areas adjacent to each other.

5. The method of claim 1, wherein the method further comprises:

acquiring river hydrological data acquired by each hydrological station, wherein the river hydrological data are used for representing the river water level of a river in which the hydrological station is located;

obtaining an early warning water level in the effective flood early warning area, wherein the early warning water level comprises a guaranteed water level, a warning water level and a fortifying water level, the guaranteed water level is higher than the warning water level, and the warning water level is higher than the fortifying water level; and

and determining flood early warning levels corresponding to the p polygonal areas into which the p hydrological stations fall based on the relationship between the river water level and the early warning water level.

6. The method of claim 5, wherein the determining flood warning levels corresponding to the p polygonal areas into which the p hydrological stations fall based on the relationship of the river level and the warning level comprises:

under the condition that the river water level is lower than the fortification water level, determining that the flood early warning level corresponding to the polygonal area where the hydrological station falls is flood-free early warning;

determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is a third-level flood early warning under the condition that the river water level is not lower than the fortifying water level and lower than the warning water level;

determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is a secondary flood early warning under the condition that the river water level is not lower than the warning water level and lower than the guaranteed water level; and

and determining that the flood early warning level corresponding to the polygonal area into which the hydrological station falls is a first-level flood early warning under the condition that the river water level is higher than the guaranteed water level.

7. The method of claim 6, wherein said determining a flood warning level of said hydrocarbon pipeline at said each flow-through point comprises:

and according to the sequence of flood early warning grades corresponding to the p polygonal areas from high to low, sequentially determining the flood early warning grade of the oil and gas pipeline at each flow-through point, wherein the early warning grades are a first-level flood early warning, a second-level flood early warning, a third-level flood early warning and a flood-free early warning from high to low.

8. The method of claim 1, wherein the method further comprises:

and superposing and displaying the river influence area of each flow point and the flood early warning level of each flow point, wherein the display effects of the primary flood early warning, the secondary flood early warning, the tertiary flood early warning and the flood-free early warning are different.

9. A flood warning device, comprising:

the system comprises a first determination module, a second determination module and a third determination module, wherein the first determination module is used for determining an effective flood early warning division, an oil-gas pipeline is laid in the effective flood early warning division, the oil-gas pipeline passes through n flow-through points of m rivers, p hydrological stations are arranged on the m rivers, m, n and p are integers, and m is more than or equal to p and is more than or equal to 3;

the second determination module is used for determining the influence area of the river at each flow-through point on the oil and gas pipeline;

a dividing module, configured to divide the effective flood early warning region into p adjacent polygonal regions according to an equidistant polygon method using the position information of the p hydrologic stations, where rivers flowing through the same polygonal region have the same flood early warning level;

the third determining module is used for determining the flood early warning level of the oil and gas pipeline at each flow point according to the flood early warning level corresponding to the polygonal area in which each flow point falls; and

and the obtaining module is used for obtaining the flood early warning result of the oil and gas pipeline based on the river influence area at each flow point and the flood early warning level at each flow point.

10. An electronic device, comprising:

one or more processors; and

a memory for storing one or more programs,

wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to perform the method of any of claims 1-8.