CN114413838B - Goaf subsidence area monitoring system, goaf subsidence area monitoring equipment, goaf subsidence area monitoring method and goaf subsidence area monitoring device - Google Patents
Goaf subsidence area monitoring system, goaf subsidence area monitoring equipment, goaf subsidence area monitoring method and goaf subsidence area monitoring device Download PDFInfo
- Publication number
- CN114413838B CN114413838B CN202210086725.1A CN202210086725A CN114413838B CN 114413838 B CN114413838 B CN 114413838B CN 202210086725 A CN202210086725 A CN 202210086725A CN 114413838 B CN114413838 B CN 114413838B
- Authority
- CN
- China
- Prior art keywords
- goaf
- monitoring
- stress
- area
- processor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 110
- 238000012806 monitoring device Methods 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 60
- 230000005484 gravity Effects 0.000 claims abstract description 23
- 239000002689 soil Substances 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 abstract description 23
- 238000005065 mining Methods 0.000 description 11
- 239000003245 coal Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The application provides a goaf subsidence area monitoring system, monitoring equipment, a goaf subsidence area monitoring method and a goaf subsidence area monitoring device, and relates to the technical field of geological exploration. The system comprises: the device comprises a plurality of monitoring points, monitoring equipment and a processor, wherein the monitoring equipment and the processor are arranged on each monitoring point, and each monitoring point is arranged between the maximum collapse area and the minimum collapse area of the goaf; each monitoring device is provided with a stress chain and a gravity device, the gravity device is connected with the tail end of the stress chain, and the stress chain is provided with a plurality of stress sensors; the gravity device is used for keeping each stress sensor in the horizontal direction; the stress sensor is used for acquiring strain data; each monitoring device is connected with a processor respectively, and the processor is used for receiving the strain quantity data acquired by each stress sensor in each monitoring device and determining the actual collapse area of the goaf according to the strain quantity data and the distance between the adjacent stress sensors. By applying the embodiment of the application, the collapse area in the goaf collapse process can be accurately monitored.
Description
Technical Field
The application relates to the technical field of geological exploration, in particular to a goaf subsidence area monitoring system, monitoring equipment, method and device.
Background
Goaf is a "cavity" created below the earth's surface by artificial excavation or natural geological movement, for example, the goaf is formed in a coal mining area after underground mining of the coal mine in the coal mining area, and collapse of the goaf can cause significant safety problems.
At present, the maximum range and the minimum range of goaf collapse can be determined by combining the rock-soil body fracture angle theory with geological investigation data in the coal mining process.
However, goaf collapse is a slow process and the collapse area during goaf collapse cannot be accurately monitored by prior art methods.
Disclosure of Invention
The application aims to provide a goaf collapse area monitoring system, a goaf collapse area monitoring device, a goaf collapse area monitoring method and a goaf collapse area monitoring device, which aim to accurately monitor a collapse area in a goaf collapse process.
In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows:
In a first aspect, an embodiment of the present application provides a goaf subsidence area monitoring system, the system comprising: the device comprises a plurality of monitoring points, monitoring equipment and a processor, wherein the monitoring equipment and the processor are arranged on each monitoring point, and each monitoring point is arranged between a maximum collapse area and a minimum collapse area of a goaf;
Each monitoring device is provided with a stress chain and a gravity device, the gravity device is connected with the tail end of the stress chain, and the stress chain is provided with a plurality of stress sensors; the gravity device is used for keeping each stress sensor in the horizontal direction; the stress sensor is used for acquiring strain data;
Each monitoring device is connected with the processor respectively, and the processor is used for receiving the strain quantity data acquired by each stress sensor in each monitoring device and determining the actual collapse area of the goaf according to the strain quantity data and the interval between the adjacent stress sensors.
Optionally, a recording unit is further arranged on the monitoring equipment;
the recording unit is connected with the stress chain and is used for recording strain data acquired by each stress sensor on the stress chain;
The recording unit is also connected with the processor and used for sending the strain data acquired by each stress sensor on the stress chain to the processor.
Optionally, a power supply unit is further arranged on the monitoring equipment;
The power supply unit is respectively connected with the stress chain and the recording unit and is used for supplying power to each stress sensor and the recording unit arranged on the stress chain.
Optionally, each monitoring point is a borehole; the monitoring equipment is also provided with a sealing device;
the sealing device is arranged at the top end of the drilling hole;
and the top end and the bottom end of the sealing device are respectively provided with a through hole, and the stress chain passes through the through holes and is vertically arranged in the drilling holes.
Optionally, the number of the monitoring points is 3, and each monitoring point forms an equilateral triangle.
In a second aspect, an embodiment of the present application provides a monitoring device, where the monitoring device is the monitoring device in the first aspect.
In a third aspect, an embodiment of the present application further provides a goaf collapse area monitoring method, where the method is applied to the processor in the first aspect, and the method includes:
receiving strain data acquired by each stress sensor in each monitoring device;
And determining the actual collapse area of the goaf according to the strain quantity data acquired by the stress sensors in the monitoring equipment and the distance between the adjacent stress sensors.
Optionally, the determining the actual collapse area of the goaf according to the strain data acquired by each stress sensor in each monitoring device and the distance between adjacent stress sensors includes:
Determining the sliding angle of the goaf according to the strain quantity data acquired by the stress sensors in the monitoring equipment and the distance between the adjacent stress sensors;
And determining the actual collapse area of the goaf according to the sliding angle of the goaf, the goaf range and the depth information of the goaf.
Optionally, the receiving strain data acquired by each stress sensor in each monitoring device includes:
determining the maximum collapse area and the minimum collapse range of the goaf according to the rock-soil body fracture angle interval;
And receiving strain quantity data acquired by each stress sensor in each monitoring device arranged between the maximum collapse area and the minimum collapse area of the goaf.
In a fourth aspect, an embodiment of the present application further provides a goaf collapse area monitoring device, where the device is applied to the processor in the first aspect, and the device includes:
the receiving module is used for receiving the strain data acquired by each stress sensor in each monitoring device;
The determining module is used for determining the actual collapse area of the goaf according to the strain quantity data acquired by the stress sensors in the monitoring equipment and the distance between the adjacent stress sensors.
Optionally, the determining module is specifically configured to determine a sliding angle of the goaf according to strain amount data obtained by each stress sensor in each monitoring device and a distance between adjacent stress sensors; and determining the actual collapse area of the goaf according to the sliding angle of the goaf, the goaf range and the depth information of the goaf.
Optionally, the receiving module is specifically configured to determine a maximum collapse area and a minimum collapse range of the goaf according to a rock-soil body fracture angle interval; and receiving strain quantity data acquired by each stress sensor in each monitoring device arranged between the maximum collapse area and the minimum collapse area of the goaf.
In a fifth aspect, an embodiment of the present application provides an electronic device, including: the goaf subsidence area monitoring system comprises a processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, when the electronic device is running, the processor and the storage medium are communicated through the bus, and the processor executes the machine-readable instructions to execute the steps of the goaf subsidence area monitoring method of the third aspect.
In a sixth aspect, an embodiment of the present application provides a storage medium, which when executed by a processor performs the steps of the goaf collapse area monitoring method of the third aspect described above.
The beneficial effects of the application are as follows:
The embodiment of the application provides a goaf subsidence area monitoring system, monitoring equipment, a goaf subsidence area monitoring method and a goaf subsidence area monitoring device, wherein the goaf subsidence area monitoring system comprises: the device comprises a plurality of monitoring points, monitoring equipment and a processor, wherein the monitoring equipment and the processor are arranged on each monitoring point, and each monitoring point is arranged between the maximum collapse area and the minimum collapse area of the goaf; each monitoring device is provided with a stress chain and a gravity device, the gravity device is connected with the tail end of the stress chain, and the stress chain is provided with a plurality of stress sensors; the gravity device is used for keeping each stress sensor in the horizontal direction; the stress sensor is used for acquiring strain data; each monitoring device is connected with the processor respectively, and the processor is used for receiving the strain quantity data acquired by each stress sensor in each monitoring device and determining the actual collapse area of the goaf according to the strain quantity data and the distance between the adjacent stress sensors.
By adopting the goaf subsidence area monitoring system provided by the embodiment of the application, the actual subsidence area of the goaf is monitored by using the monitoring equipment arranged on each monitoring point, specifically, the actual subsidence areas of a plurality of layers to be subsided corresponding to each monitoring equipment can be determined by using the change condition of the strain data of a plurality of stress sensors in a stress chain arranged on the monitoring equipment in the subsidence process of the goaf, and the total actual subsidence area of the layers to be subsided can be calculated by combining the actual subsidence areas of the layers to be subsided at the same depth, and is taken as the actual subsidence area of the goaf. That is, in the goaf collapse process, different layers to be collapsed can collapse, and when the goaf collapses, the total actual collapse area corresponding to the multiple layers to be collapsed can be determined by the above-mentioned method, so that the collapse area in the goaf collapse process can be accurately monitored.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a goaf subsidence area monitoring system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a relationship between a maximum collapse area and a minimum collapse area of a goaf and each monitoring point according to an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a goaf according to an embodiment of the present application;
Fig. 4 is a schematic structural diagram of a monitoring device according to an embodiment of the present application;
FIG. 5 is a schematic flow chart of a goaf collapse area monitoring method according to an embodiment of the present application;
FIG. 6 is a schematic flow chart of another goaf subsidence area monitoring method according to an embodiment of the present application;
FIG. 7 is a schematic flow chart of another goaf subsidence area monitoring method according to an embodiment of the present application;
FIG. 8 shows a goaf subsidence area monitoring apparatus according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Fig. 1 is a schematic structural diagram of a goaf collapse area monitoring system according to an embodiment of the present application. As shown in fig. 1, the system may include a plurality of monitoring points 101, a monitoring device 102 disposed on each monitoring point 101, and a processor 100, wherein each monitoring point 101 is disposed between a most collapsed region and a least collapsed region of the goaf.
Each monitoring device 102 is provided with a stress chain 103 and a gravity device 104, the gravity device 104 is connected with the tail end of the stress chain 103, and the stress chain 103 is provided with a plurality of stress sensors 1031; gravity means 104 for holding each stress sensor 1031 in a horizontal direction; the stress sensor 1031 is used to acquire strain amount data.
Each monitoring device 102 is connected to the processor 100, and the processor 100 is configured to receive strain data acquired by each stress sensor 1031 in each monitoring device 102, and determine an actual collapse area of the goaf according to the strain data and the spacing between adjacent stress sensors 1031.
The structures of the monitoring devices 102 set on each monitoring point 101 may be the same, the number of the monitoring devices 102 is consistent with the number of the monitoring points 101, each monitoring device 102 with the above-described structure may send detected data to the processor 100 through wired or wireless communication, and the processor 100 may analyze and process the monitored data of each monitoring device 102 to obtain an actual collapse area, that is, an actual collapse range, formed in each collapse stage of the goaf.
The relationship between each monitoring point 101 and the maximum collapse area and the minimum collapse area of the goaf is first shown graphically. Fig. 2 is a schematic diagram of a relationship between a maximum collapse area and a minimum collapse area of a goaf and each monitoring point according to an embodiment of the present application. As shown in fig. 2, the number of monitoring points 101 may be 3, and the goaf collapse area needs to be monitored by using 3 monitoring devices 102. As can be seen from fig. 3, the maximum collapse area and the minimum collapse area may be approximately circular, and each monitoring point 101 may be disposed between the circular rings formed by the maximum collapse area and the minimum collapse area of the goaf, wherein the maximum collapse area and the minimum collapse area of the goaf may be predicted in advance in the following manner.
Fig. 3 is a schematic cross-sectional view of a goaf according to an embodiment of the present application, as shown in fig. 3, where a coal mining is taken as an example, and a goaf 301 is a coal mining area, and when a rock mass on the mining area is broken along a rock-soil body breaking angle a during mining in the coal mining area, a subsidence area of the goaf 301 is formed, where the rock-soil body breaking angle a may be determined by the following formula: a=45° + rock-soil body internal friction angle/2, the rock-soil body internal friction angle can be determined according to the geological survey data in the coal mining process, specifically, the rock-soil body internal friction angle is an interval range, the maximum rock-soil body internal friction angle and the minimum rock-soil body internal friction angle are substituted into the formula for solving the rock-soil body fracture angle A, and then the large subsidence area and the minimum subsidence area of the goaf can be determined according to the interval of the rock-soil body fracture angle A.
After the large collapse area and the minimum collapse area of the goaf 301 are determined, each monitoring device 102 may be extended from the ground plane 302 in fig. 3, and the actual collapse area of the goaf 301 formed at each collapse stage may be determined in combination with the data monitored by each monitoring device 102.
Fig. 4 is a schematic structural diagram of a monitoring device according to an embodiment of the present application. As shown in fig. 4, the monitoring device 102 may be provided with a stress chain 103, the stress chain 103 extends into the borehole 400, the stress chain 103 may include a plurality of stress sensors 1031 and a bus 401, each stress sensor may be indicated by a letter B in fig. 4, each stress sensor 1031 may be respectively connected to the bus 401, where the type of the stress sensor 1031 may be specifically a piezomagnetic induction stress meter, a capacitive stress meter or a piezomagnetic induction stereo meter, in general, the types of the stress sensors 1031 included in the stress chain 103 are consistent, the distance between adjacent stress sensors 1031 may be a constant, for example, one stress sensor 1031 may be set at intervals of 2 meters, and the distance between adjacent stress sensors 1031 on the stress chain 103 is stored in the memory of the processor 100 in advance.
The number of the stress sensors 1031 provided on the stress chain 103 may be determined according to actual requirements, for example, the number of the stress sensors 1031 provided on the stress chain 103 may be determined according to the depth of the stress chain 103 and the accuracy requirement, for example, 4 stress sensors 1031 may be provided on the stress chain 103 on the monitoring device 102 in fig. 4, which is not limited by the present application. The gravity device 104 may be connected to the end of the stress chain 103, that is, the end of the bus connected to each stress sensor 1031 is connected to the gravity device 104, where the gravity device 104 may be denoted by the letter G in fig. 4, and the purpose of the gravity device 104 is to pull the bus 401 to keep each stress sensor 1031 connected to the bus 401 horizontal, and the specific weight value of the gravity device 104 is not limited by the present application. Each stress sensor 1031 may acquire strain data at a corresponding depth under the influence of the gravity device 104.
Taking the monitoring of the goaf subsidence area by using 3 monitoring devices 102 (a first monitoring device, a second monitoring device and a third monitoring device) as an example, the depths of the 3 monitoring devices 102 deep into the underground can be kept consistent, for example, the stress chains 103 on the monitoring devices 102 can be deep into the underground 25 meters, and in the goaf subsidence process, the stress sensor 1031 with the change of the strain data exists on each monitoring device 102. Generally, when a goaf collapses, strain data of the strain sensors 1031 on the stress chain 103 will be suddenly changed from bottom to top in sequence, an area above the goaf can be divided into a plurality of layers to be collapsed according to depths of adjacent strain sensors 1031, that is, one layer to be collapsed is arranged between two adjacent strain sensors 1031, and whether the layer to be collapsed below the strain sensors 1031 collapses can be judged according to whether strain data corresponding to the strain sensors 1031 change or whether strain data of the strain sensors 1031 is greater than a strain threshold.
The first monitoring device, the second monitoring device, and the third monitoring device may respectively send the strain data obtained by each of the stress sensors 1031 to the processor 100, where the processor 100 processes and analyzes the strain data of each of the stress sensors 1031 corresponding to the first monitoring device, and the second monitoring device and the third monitoring device are similar. Assuming that 5 stress sensors 1031 are disposed on the stress chain 103 of the first monitoring device and the distance between adjacent stress sensors 1031 is 2 meters, the processor 100 determines, according to the received strain data, that the strain data of the stress sensor 1031 located at the position of 4 meters on the first monitoring device and the strain data of the stress sensor 1031 located below 4 meters are both greater than the strain threshold, then it represents that the layer to be collapsed located below 4 meters is collapsed.
The collapse area after collapse of the to-be-collapsed layer at 5 meters, the to-be-collapsed layer at 7 meters, and the to-be-collapsed layer at 9 meters can be calculated by respectively, and here, taking the collapse area of the to-be-collapsed layer at 5 meters as an example for explanation, and otherwise, the processor 100 calculates the slip angle 1 of the to-be-collapsed layer at 5 meters from the strain amount difference value between the strain amount data corresponding to the strain sensor 1031 at 4 meters and the strain amount data corresponding to the strain sensor 1031 at 6 meters and the spacing (e.g., 2 meters), the slip angle 1 being the result of the strain amount difference value compared with the spacing, the processor 100 may determine an actual collapse area of the layer to be collapsed in the direction of the sliding angle 1 according to the sliding angle 1 of the layer to be collapsed, and similarly, the processor 100 may calculate the sliding angle 2 and the sliding angle 3 of the layer to be collapsed according to strain data acquired by the stress sensors 1031 of the second monitoring device and the third monitoring device, and further determine the actual collapse area of the layer to be collapsed in the direction of the sliding angle 2 and the actual collapse area of the layer to be collapsed in the direction of the sliding angle 3 according to the sliding angle 2 and the sliding angle 3, respectively, and the processor 100 determines the total actual collapse area of the layer to be collapsed by combining the sliding angle 1, the sliding angle 2 and the actual collapse areas in the directions of the sliding angle 3. And in the same way, the total actual collapse area of other layers to be collapsed in the collapse process of the goaf, namely the actual collapse area of the goaf, can be determined.
It should be noted that different layers to be subsided may correspond to different sliding angles, the actual subsidence area of each layer to be subsided may be calculated according to the sliding angle corresponding to each layer to be subsided, where the sliding angle corresponds to the above mentioned rock-soil body fracture angle a, the sliding angle is determined according to the data actually collected when the goaf collapses, so that the subsidence area of the goaf is avoided to be approximately determined according to the data in geological exploration data, the accuracy of determining the subsidence area of the goaf is improved, and residents and facilities in the subsidence area of the goaf can be effectively avoided.
In summary, in the goaf subsidence area monitoring system provided by the application, the actual subsidence area of the goaf is monitored by using the monitoring devices arranged on the monitoring points, specifically, the actual subsidence areas of a plurality of layers to be subsided corresponding to each monitoring device can be determined by using the change condition of strain data of a plurality of stress sensors in a stress chain arranged on the monitoring devices in the subsidence process of the goaf, and the total actual subsidence area of the layers to be subsided can be calculated by combining the actual subsidence areas of the layers to be subsided at the same depth, and the total actual subsidence area is taken as the actual subsidence area of the goaf. That is, in the goaf collapse process, different layers to be collapsed can collapse, and when the goaf collapses, the total actual collapse area corresponding to the multiple layers to be collapsed can be determined by the above-mentioned method, so that the collapse area in the goaf collapse process can be accurately monitored.
Optionally, the monitoring device 102 is further provided with a recording unit 402, where the recording unit 402 is connected to the stress chain 103, and is used to record strain data acquired by each stress sensor 1031 on the stress chain 103; the recording unit 402 is further connected to the processor 100, and is configured to send strain data acquired by each stress sensor 1031 on the stress chain 103 to the processor 100.
As shown in fig. 4, the recording unit 402 may be connected to a head end of the bus 401 in the stress chain 103, the bus 401 may transmit strain data acquired by each stress sensor 1031 connected thereto to the recording unit 402, and the recording unit 402 may store the strain data in association according to the number of each stress sensor 1031, record the strain data of each stress sensor 1031 in the form of a table, and send the table to the processor 100 according to a preset period.
Optionally, the recording unit 402 may further delete the historical strain data according to a preset period, so that it may be ensured that the recording unit 402 has enough space to record the strain data of each strain sensor 1031.
Optionally, the monitoring device 102 is further provided with a power supply unit 403; the power supply unit 403 is connected to the stress chain 103 and the recording unit 402, respectively, and supplies power to the stress sensors 1031 and the recording unit 402 provided in the stress chain 103.
As shown in fig. 4, the power supply unit 403 may be connected to the head end of the bus in the stress chain 103 together with the recording unit 402, the power supply unit 403 may provide an operating voltage for each stress sensor 1031 through the bus 401, so that each stress sensor 1031 may work normally, the power supply unit 403 may be connected to a power port of the recording unit 402, and provide an operating voltage for the recording unit 402 through the power port on the recording unit 402, so that the recording unit 402 works normally under the action of the operating voltage.
Optionally, each monitoring point 101 is a borehole 400; the monitoring device 102 is also provided with a closing means 404; a closure device 404 is disposed at the top end of the borehole 400; the top and bottom ends of the closing means 404 are provided with through holes, respectively, through which the stress chain 103 is vertically arranged in the borehole 400.
As shown in fig. 2 and 4, a worker drills holes at each monitoring point 101 in fig. 2 by using drilling equipment, and forms a drill hole 400 in fig. 4 under the ground corresponding to each monitoring point 101, wherein the depth of the drill hole 400 can be set according to the length of the stress chain 103 on the monitoring equipment 102, and the radius of the drill hole 400 can also be set according to the construction requirement, and the application is not limited thereto.
Alternatively, the sealing device 404 and the stress chain 103 in fig. 4 may be separate units, after the drill hole 400 is formed, the sealing device 404 may be first disposed at the top end of the drill hole 400, and then the stress chain 103 is inserted into the drill hole 400, where the end of the stress chain 103 is connected to the gravity device 104, and the head end of the stress chain 103 is connected to the recording unit 402 and the power supply unit 403; the closure device 404 and the stress chain 103 may also be a body, which may be positioned at the borehole 400 after the borehole 400 is formed, such that the closure device 404 on the body is snapped onto the top end of the borehole 400. It can be seen that the sealing device 404 can ensure that the monitoring apparatus 102 works normally, and is prevented from being influenced by weather conditions (such as heavy rain) and man-made influences, so that each stress sensor 1031 can obtain more accurate strain data, and accuracy of determining the collapse area in the goaf collapse process is improved.
Alternatively, as can be seen from fig. 4, both the recording unit 402 and the power supply unit 403 may be provided outside the enclosure 404, or both the recording unit 402 and the power supply unit 403 may be provided inside the enclosure. The application is not limited thereto.
Alternatively, the number of the monitoring points 101 is 3, and each monitoring point 101 forms an equilateral triangle. As shown in fig. 2, the intervals between adjacent monitoring points 101 are equal, so that errors of actual collapse areas in the sliding angle directions of the same layer to be collapsed calculated by the adjacent monitoring equipment 102 can be reduced.
Of course, the number of the monitoring points 101 may be 3 or more, and each monitoring point 101 may be a regular polygon, and most preferably a circle. It is known that the number of monitoring devices 102 required for approaching a circle increases, so that the number of monitoring points 101 needs to be determined between the cost and the accuracy, and the distances between adjacent monitoring points 101 are made uniform as much as possible on the premise that the number of monitoring points 101 is known, so that the accuracy of determining the collapse area can be mentioned.
The goaf subsidence area monitoring method performed by the processor in the goaf subsidence area monitoring system according to the present application is illustrated in the following with reference to the accompanying drawings. Fig. 5 is a schematic flow chart of a goaf collapse area monitoring method according to an embodiment of the present application, as shown in fig. 5, the method includes:
s501, strain data acquired by each stress sensor in each monitoring device are received.
S502, determining the actual collapse area of the goaf according to the strain quantity data acquired by each stress sensor in each monitoring device and the distance between the adjacent stress sensors.
In the goaf subsidence process, each stress sensor in each monitoring device corresponds to strain data, each monitoring device sends the strain data of each stress sensor to a processor, the processor determines a subsided layer to be subsided according to the relation between the obtained strain data and a strain threshold, the collapse direction of each subsided layer to be subsided can be determined according to the difference value and the interval of the strain data of the upper stress sensor and the lower stress sensor of each subsided layer to be subsided, and it is required to be stated that each monitoring device can determine the collapse direction of each subsided layer to be subsided, and then the processor determines the total actual collapse area of each target subsided layer according to the collapse directions of each subsided layer to be subsided, and takes the total actual collapse area of each target subsided layer to be subsided as the actual collapse area of the goaf.
FIG. 6 is a schematic flow chart of another goaf collapse area monitoring method according to an embodiment of the present application. Optionally, as shown in fig. 6, determining the actual collapse area of the goaf according to the strain data acquired by each stress sensor in each monitoring device and the distance between adjacent stress sensors includes:
S601, determining the sliding angle of the goaf according to the strain quantity data acquired by each stress sensor in each monitoring device and the distance between the adjacent stress sensors.
The sliding angle of the goaf can be understood as a sliding angle corresponding to each layer to be collapsed, the sliding angle is equivalent to the above-mentioned rock-soil body cracking angle A, taking a layer to be collapsed (target layer to be collapsed) as an example for explanation, and assuming that 3 monitoring devices are provided, the processor can determine the ratio between the difference value of the strain quantity data and the spacing according to the strain quantity data obtained by two stress sensors located above and below the target layer to be collapsed in each monitoring device and the spacing between the two stress sensors, and the ratio results are respectively used as a sliding angle 1, a sliding angle 2 and a sliding angle 3, namely the target layer to be collapsed corresponds to three sliding angles, namely the target layer to be collapsed is collapsed from three directions respectively in the process of collapsing the goaf.
S602, determining the actual collapse area of the goaf according to the sliding angle of the goaf, the goaf range and the depth information of the goaf.
The distance between the target layer to be collapsed and the goaf can be determined according to the depth information of the goaf and the depth information corresponding to the target layer to be collapsed, and the distance and the goaf range, namely the area information of the goaf, are stored in a memory of a processor in advance. Continuing with the above example, the processor may determine the actual collapse area 1 of the target layer to be collapsed in the sliding angle 1 direction according to the sliding angle 1, the goaf area and the distance, the processor may determine the actual collapse area 2 of the target layer to be collapsed in the sliding angle 2 direction according to the sliding angle 2, the goaf area and the distance, the processor may determine the actual collapse area 3 of the target layer to be collapsed in the sliding angle 3 direction according to the sliding angle 3, the goaf area and the distance, and the processor may finally determine the total actual collapse area of the target layer to be collapsed by combining the actual collapse area 1, the actual collapse area 2 and the actual collapse area 3, and the total actual collapse area is taken as the actual collapse area of the goaf.
It should be noted that, the more monitoring devices, the more collapse areas of the target layer to be collapsed in a plurality of sliding angle directions can be obtained, so that the accuracy of determining the actual collapse areas of the goaf can be improved.
Fig. 7 is a schematic flow chart of another goaf collapse area monitoring method according to an embodiment of the present application. Optionally, as shown in fig. 7, the receiving the strain data acquired by each stress sensor in each monitoring device includes:
s701, determining the maximum collapse area and the minimum collapse range of the goaf according to the rock-soil body fracture angle section.
S702, receiving strain data acquired by each stress sensor in each monitoring device arranged between the maximum collapse area and the minimum collapse area of the goaf.
The rock-soil body rupture angle is related to a rock-soil body internal friction angle firstly, the rock-soil body internal friction angle can be determined according to the geological survey data in the coal mining process, specifically, the rock-soil body internal friction angle is an interval range, a rock-soil body rupture angle interval can be calculated according to an A=45° + rock-soil body internal friction angle/2 formula, and after the rock-soil body rupture angle interval is determined, the maximum collapse area and the minimum collapse range of a goaf can be determined according to the goaf range, the goaf depth and other information.
Each monitoring device is arranged on a monitoring point preset between the maximum collapse area and the minimum collapse range of the goaf, each strain sensor on each monitoring device can generate strain data in the goaf collapse process, and each monitoring device sends the strain data corresponding to each strain sensor to the processor.
The application further provides a device, electronic equipment and a storage medium capable of executing the goaf collapse area monitoring method on the basis of the goaf collapse area monitoring method, and explanation is carried out respectively as follows. Fig. 8 is a goaf subsidence area monitoring apparatus according to an embodiment of the present application. As shown in fig. 8, the apparatus includes:
and the receiving module 801 is used for receiving the strain data acquired by each stress sensor in each monitoring device.
A determining module 802, configured to determine an actual collapse area of the goaf according to strain data acquired by each stress sensor in each monitoring device and a distance between adjacent stress sensors.
Optionally, a determining module 802, specifically configured to determine a sliding angle of the goaf according to strain data acquired by each stress sensor in each monitoring device and a distance between adjacent stress sensors; and determining the actual collapse area of the goaf according to the sliding angle of the goaf, the goaf range and the depth information of the goaf.
Optionally, the receiving module 801 is specifically configured to determine a maximum collapse area and a minimum collapse range of the goaf according to the rock-soil body fracture angle interval; strain data acquired by each stress sensor in each monitoring device disposed between the maximum collapse area and the minimum collapse area of the goaf is received.
The foregoing apparatus is used for executing the method provided in the foregoing embodiment, and its implementation principle and technical effects are similar, and are not described herein again.
The above modules may be one or more integrated circuits configured to implement the above methods, for example: one or more Application SPECIFIC INTEGRATED Circuits (ASIC), or one or more microprocessors, or one or more field programmable gate arrays (Field Programmable GATE ARRAY FPGA), etc. For another example, when a module above is implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processor that may invoke the program code. For another example, the modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application, as shown in fig. 9, where the server may include: processor 901, storage medium 902, and bus 903, the storage medium 902 storing machine-readable instructions executable by the processor 901, when the server is running, communicating with the storage medium 902 via the bus 903, the processor 901 executing the machine-readable instructions to perform the steps of the method described above. The specific implementation manner and the technical effect are similar, and are not repeated here.
Optionally, the present application further provides a storage medium, on which a computer program is stored, which when being executed by a processor performs the steps of the above-described method embodiments.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the indirect coupling or communication connection of devices or elements may be in the form of electrical, mechanical, or otherwise.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.
The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (english: processor) to perform some of the steps of the methods according to the embodiments of the application. And the aforementioned storage medium includes: u disk, mobile hard disk, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. A goaf subsidence area monitoring system, the system comprising: the device comprises a plurality of monitoring points, monitoring equipment and a processor, wherein the monitoring equipment and the processor are arranged on each monitoring point, and each monitoring point is arranged between a maximum collapse area and a minimum collapse area of a goaf;
Each monitoring device is provided with a stress chain and a gravity device, the gravity device is connected with the tail end of the stress chain, and the stress chain is provided with a plurality of stress sensors and buses; the gravity device is used for keeping each stress sensor in the horizontal direction; the stress sensor is used for acquiring strain data; each stress sensor is respectively connected to the bus; the tail end of a bus connected with each stress sensor is connected with the gravity device;
Each monitoring device is connected with the processor respectively, and the processor is used for receiving the strain quantity data obtained by each stress sensor in each monitoring device and determining the sliding angle of the goaf according to the strain quantity data corresponding to each monitoring device and the distance between adjacent stress sensors of each monitoring point;
And determining an actual collapse area of the goaf according to the sliding angle of the goaf, the goaf range, the depth information of each layer to be collapsed and the depth information of the goaf, wherein the actual collapse area of the goaf comprises a total actual collapse area corresponding to each layer to be collapsed in the goaf.
2. The system of claim 1, wherein the monitoring device is further provided with a recording unit;
the recording unit is connected with the stress chain and is used for recording strain data acquired by each stress sensor on the stress chain;
The recording unit is also connected with the processor and used for sending the strain data acquired by each stress sensor on the stress chain to the processor.
3. The system according to claim 2, wherein the monitoring device is further provided with a power supply unit;
The power supply unit is respectively connected with the stress chain and the recording unit and is used for supplying power to each stress sensor and the recording unit arranged on the stress chain.
4. A system according to claim 3, wherein each of the monitoring points is a borehole; the monitoring equipment is also provided with a sealing device;
the sealing device is arranged at the top end of the drilling hole;
and the top end and the bottom end of the sealing device are respectively provided with a through hole, and the stress chain passes through the through holes and is vertically arranged in the drilling holes.
5. The system of any of claims 1-4, wherein the number of monitoring points is 3, each monitoring point comprising an equilateral triangle.
6. A method of goaf subsidence area monitoring, the method being applied to a processor in a goaf subsidence area monitoring system as claimed in any one of claims 1 to 5, the method comprising:
receiving strain data acquired by each stress sensor in each monitoring device;
Determining an actual collapse area of the goaf according to the strain quantity data acquired by each stress sensor in each monitoring device and the distance between adjacent stress sensors, wherein the actual collapse area of the goaf comprises a total actual collapse area corresponding to each layer to be collapsed in the goaf;
The determining the actual collapse area of the goaf according to the strain quantity data acquired by the stress sensors in the monitoring devices and the distance between the adjacent stress sensors comprises the following steps:
determining the sliding angle of the goaf according to the strain quantity data obtained by the stress sensors in the monitoring equipment and the distance between the adjacent stress sensors of the monitoring points;
According to the sliding angle of the goaf, the goaf range and the depth information of each layer to be collapsed
And determining the actual collapse area of the goaf according to the depth information of the goaf, wherein the actual collapse area of the goaf comprises the total actual collapse area corresponding to each layer to be collapsed in the goaf.
7. The method of claim 6, wherein receiving strain amount data acquired by each stress sensor in each of the monitoring devices comprises:
determining the maximum collapse area and the minimum collapse range of the goaf according to the rock-soil body fracture angle interval;
And receiving strain quantity data acquired by each stress sensor in each monitoring device arranged between the maximum collapse area and the minimum collapse area of the goaf.
8. A goaf subsidence area monitoring apparatus for use with a processor in a goaf subsidence area monitoring system as claimed in any one of claims 1 to 5, the apparatus comprising:
the receiving module is used for receiving the strain data acquired by each stress sensor in each monitoring device;
And the determining module is used for determining the actual collapse area of the goaf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086725.1A CN114413838B (en) | 2022-01-25 | 2022-01-25 | Goaf subsidence area monitoring system, goaf subsidence area monitoring equipment, goaf subsidence area monitoring method and goaf subsidence area monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086725.1A CN114413838B (en) | 2022-01-25 | 2022-01-25 | Goaf subsidence area monitoring system, goaf subsidence area monitoring equipment, goaf subsidence area monitoring method and goaf subsidence area monitoring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114413838A CN114413838A (en) | 2022-04-29 |
| CN114413838B true CN114413838B (en) | 2024-06-07 |
Family
ID=81276806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210086725.1A Active CN114413838B (en) | 2022-01-25 | 2022-01-25 | Goaf subsidence area monitoring system, goaf subsidence area monitoring equipment, goaf subsidence area monitoring method and goaf subsidence area monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114413838B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012145884A1 (en) * | 2011-04-25 | 2012-11-01 | 中国人民解放军国防科学技术大学 | Monitoring method and monitoring system of settlement of engineering buildings |
| JP2013096815A (en) * | 2011-10-31 | 2013-05-20 | Railway Technical Research Institute | Underground displacement measuring apparatus |
| CN105066896A (en) * | 2015-07-18 | 2015-11-18 | 深圳市勘察研究院有限公司 | Karst collapse real-time fiber early warning forecasting system |
| JP2016008399A (en) * | 2014-06-23 | 2016-01-18 | 鹿島建設株式会社 | Tunnel face monitoring method |
| CN106524996A (en) * | 2016-12-23 | 2017-03-22 | 宁波建工建乐工程有限公司 | Soil settlement observation and measurement system based on Bragg grating |
| CN106934178A (en) * | 2017-04-07 | 2017-07-07 | 中国矿业大学 | A kind of island working face adopts preceding danger of burst Pre-Evaluation method |
| CN107177497A (en) * | 2017-08-01 | 2017-09-19 | 河南理工大学 | A kind of mine worked-out section filling straw biological gas production system and its aerogenesis technique |
| CN109000613A (en) * | 2018-08-22 | 2018-12-14 | 太原理工大学 | A kind of three-dimensional rapid detection system of goaf geology sedimentation |
| CN109405880A (en) * | 2018-10-24 | 2019-03-01 | 东北大学 | A kind of superficial part goaf earth's surface combines monitoring and pre-warning system and method with underground |
| CN109489622A (en) * | 2018-11-20 | 2019-03-19 | 中煤航测遥感集团有限公司 | Model production method and settlement prediction device |
| CN110297878A (en) * | 2019-07-03 | 2019-10-01 | 中煤航测遥感集团有限公司 | Coherent Noise in GPR Record and geographic location association method and device |
| CN111460564A (en) * | 2020-04-09 | 2020-07-28 | 安徽理工大学 | Method for determining width of coal pillar at section of deep well impacted coal seam filling working face |
| CN112197815A (en) * | 2020-10-28 | 2021-01-08 | 江苏省地质矿产局第五地质大队 | Gypsum ore collapse monitoring system and construction method |
| CN112525148A (en) * | 2020-11-04 | 2021-03-19 | 中铁第四勘察设计院集团有限公司 | Method for determining deformation range of goaf |
| CN112901169A (en) * | 2021-01-19 | 2021-06-04 | 安徽理工大学 | Impact instability judging and anti-impact mining method for asymmetrical island working surface |
| CN113899343A (en) * | 2021-12-09 | 2022-01-07 | 湖北工业大学 | Foundation settlement monitoring system and method based on distributed optical fiber strain sensing technology |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441773B (en) * | 2019-08-15 | 2020-08-14 | 中国水利水电科学研究院 | Method and system for accurately positioning high slope collapse part |
-
2022
- 2022-01-25 CN CN202210086725.1A patent/CN114413838B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012145884A1 (en) * | 2011-04-25 | 2012-11-01 | 中国人民解放军国防科学技术大学 | Monitoring method and monitoring system of settlement of engineering buildings |
| JP2013096815A (en) * | 2011-10-31 | 2013-05-20 | Railway Technical Research Institute | Underground displacement measuring apparatus |
| JP2016008399A (en) * | 2014-06-23 | 2016-01-18 | 鹿島建設株式会社 | Tunnel face monitoring method |
| CN105066896A (en) * | 2015-07-18 | 2015-11-18 | 深圳市勘察研究院有限公司 | Karst collapse real-time fiber early warning forecasting system |
| CN106524996A (en) * | 2016-12-23 | 2017-03-22 | 宁波建工建乐工程有限公司 | Soil settlement observation and measurement system based on Bragg grating |
| CN106934178A (en) * | 2017-04-07 | 2017-07-07 | 中国矿业大学 | A kind of island working face adopts preceding danger of burst Pre-Evaluation method |
| CN107177497A (en) * | 2017-08-01 | 2017-09-19 | 河南理工大学 | A kind of mine worked-out section filling straw biological gas production system and its aerogenesis technique |
| CN109000613A (en) * | 2018-08-22 | 2018-12-14 | 太原理工大学 | A kind of three-dimensional rapid detection system of goaf geology sedimentation |
| CN109405880A (en) * | 2018-10-24 | 2019-03-01 | 东北大学 | A kind of superficial part goaf earth's surface combines monitoring and pre-warning system and method with underground |
| CN109489622A (en) * | 2018-11-20 | 2019-03-19 | 中煤航测遥感集团有限公司 | Model production method and settlement prediction device |
| CN110297878A (en) * | 2019-07-03 | 2019-10-01 | 中煤航测遥感集团有限公司 | Coherent Noise in GPR Record and geographic location association method and device |
| CN111460564A (en) * | 2020-04-09 | 2020-07-28 | 安徽理工大学 | Method for determining width of coal pillar at section of deep well impacted coal seam filling working face |
| CN112197815A (en) * | 2020-10-28 | 2021-01-08 | 江苏省地质矿产局第五地质大队 | Gypsum ore collapse monitoring system and construction method |
| CN112525148A (en) * | 2020-11-04 | 2021-03-19 | 中铁第四勘察设计院集团有限公司 | Method for determining deformation range of goaf |
| CN112901169A (en) * | 2021-01-19 | 2021-06-04 | 安徽理工大学 | Impact instability judging and anti-impact mining method for asymmetrical island working surface |
| CN113899343A (en) * | 2021-12-09 | 2022-01-07 | 湖北工业大学 | Foundation settlement monitoring system and method based on distributed optical fiber strain sensing technology |
Non-Patent Citations (6)
| Title |
|---|
| Experimental study on a new method to forecasting goaf pressure based key strata deformation detected using optic fiber sensors;Chai, J 等;《Optical fiber technology》;20211024;第67卷;102706-1-11 * |
| 刘亮.《岩土工程综合计算手册》.河海大学出版社,2021,(第1版),140. * |
| 基于监测数据的分段崩落采矿法地表危险变形区边界确定方法研究;庞汉松;陈从新;夏开宗;张褚强;;《岩石力学与工程学报》;20200401(第04期);92-104 * |
| 基于钻孔法探测的隐伏采空区冒落规律研究;王金波;秦秀合;李寿磊;张富兴;石超;;《黄金》;20180115(第01期);37-42 * |
| 相邻采空区影响下厚黄土矿采煤沉陷规律研究;贺国伟 等;《煤矿开采》;20190215;第24卷(第01期);81-85 * |
| 罗小杰.《城市岩溶与地史滑坡研究》.中国地质大学出版社有限责任公司,2013,(第1版),44-50. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114413838A (en) | 2022-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10539001B2 (en) | Automated drilling optimization | |
| Villegas et al. | Hangingwall surface subsidence at the Kiirunavaara Mine, Sweden | |
| EP3055481B1 (en) | Method and apparatus for casing thickness estimation | |
| EA010524B1 (en) | System and method for combined microseismic and tiltmeter analysis | |
| BR112020016739A2 (en) | METHOD FOR DETERMINING PROPERTIES OF ROCK FORMATIONS BEING DRILLED USING DRILLING COLUMN VIBRATION MEASURES. | |
| CN107024183B (en) | Roadway surrounding rock loose coil range test method and system | |
| CN107075936A (en) | For the method and system being modeled to advanced three-dimensional bottomhole component | |
| CN116341294B (en) | Three-dimensional stress field construction method and device | |
| US20210285323A1 (en) | Hydraulic fracture proximity detection using strain measurements | |
| Baryshnikov et al. | Practical experience of geomechanical monitoring in underground mineral mining | |
| CN103389527A (en) | Method and system for forecasting tunnel geology | |
| CN114413838B (en) | Goaf subsidence area monitoring system, goaf subsidence area monitoring equipment, goaf subsidence area monitoring method and goaf subsidence area monitoring device | |
| JP5128912B2 (en) | Groundwater exploration method in the ground in front of the tunnel | |
| Rochinha et al. | Monitoring hydraulic fractures: state estimation using an extended Kalman filter | |
| Taha | Effectiveness of horizontal drains in improving slope stability: a case study of landslide event in Putra Jaya Precinct 9, Malaysia | |
| Trinh et al. | Continued rock stress and displacement measurements combined with numerical modeling as an active, realistic rock engineering tool | |
| CN103389524A (en) | Method and system for forecasting tunnel geology | |
| Dawn | Technologies of ground support monitoring in block caving operations | |
| US10430530B2 (en) | Drilling data visualization method | |
| Unogwu et al. | Integrating InSAR, GNSS, IoT, 5G, and Cybersecurity for Earthquakes/Tremor Monitoring and Forecasting in Abuja, Nigeria | |
| Vinoth et al. | Status and developments of slope monitoring techniques in opencast mines | |
| Castillo et al. | Reservoir geomechanics applied to drilling and completion programs in challenging formations: Northwest Shelf, Timor Sea, North Sea and Colombia | |
| Clayton et al. | Development of a monitoring network for surface subsidence at New Gold's New Afton block cave operation | |
| Balek et al. | SHALLOW MOVEMENTS IN CLAY RICH ROCKS DETECTED DURING SUBNORMAL PRECIPITATION PERIOD | |
| Kim et al. | Development of a ground monitoring sensor system for tunnel maintenance using geophysical techniques |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |