CN116202692A

CN116202692A - Dynamic real-time monitoring method and system for leakage of underground water barrier engineering

Info

Publication number: CN116202692A
Application number: CN202310503646.0A
Authority: CN
Inventors: 许榕发; 林颖; 汤送雄; 庄僖; 杜东伟; 马艳; 郑晶; 于云江
Original assignee: South China Institute of Environmental Science of Ministry of Ecology and Environment
Current assignee: South China Institute of Environmental Science of Ministry of Ecology and Environment
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-06-02
Anticipated expiration: 2043-05-06
Also published as: CN116202692B

Abstract

The invention discloses a dynamic real-time monitoring method and a system for leakage of underground water barrier engineering, wherein the method comprises the following steps: a monitoring system and a data acquisition unit connected with the monitoring system are arranged, each monitoring node comprises a temperature and humidity method sensing module, a conductivity sensing module and an electroosmosis method sensing module, and the three sensing modules alternately and independently run in a time-sharing way under the control of an electrode control module; the monitoring system is used for respectively controlling a plurality of monitoring nodes which are connected with each other on the monitored underground water barrier engineering working surface to collect data and receive the data, respectively analyzing and processing the data of each monitoring node through a temperature and humidity fluctuation rate method, a conductivity method and an electroosmosis method, judging whether leakage occurs or not, judging whether the data collected by each node sensing array is normal or not, accurately positioning leakage points or collecting sensing arrays with abnormal data, realizing long-term, dynamic and real-time unmanned monitoring, early warning and alarming of underground water barrier engineering leakage, and automatically eliminating false alarm.

Description

Dynamic real-time monitoring method and system for leakage of underground water barrier engineering

Technical Field

The invention relates to the technical field of monitoring, in particular to a dynamic real-time monitoring method and system for leakage of underground water barrier engineering.

Background

The current groundwater barrier engineering technology is widely applied, and plays an important role in the field of groundwater protection or groundwater safe use. How to timely and accurately find out whether leakage exists in the underground water blocking engineering, and take necessary and effective solving measures to avoid environmental risks or safety production accidents, thus being a problem which needs to be solved urgently. Common leakage detection methods mainly comprise a water pumping and seepage measurement method, an acoustic wave and seepage measurement method, an electric seepage measurement method and an optical fiber seepage measurement method. The pumping and seepage measurement method has long detection period and low precision, and cannot determine the specific seepage position. The acoustic wave method consumes large manpower and material resources. The electric seepage measurement method is a geophysical exploration method for judging the seepage of the underground diaphragm wall by detecting the electric field change influenced by the electrified seepage or the reinforced concrete electromagnetic physical quantity change influenced by the seepage and the like, and the electric seepage measurement method respectively comprises an electroosmosis method and a resistivity method and is wide in application.

In the prior art, the document of Chinese invention application No. 201510549031.7 discloses a leakage detection system and a leakage detection method (namely electroosmosis method) of a vertical impermeable membrane, wherein the system comprises a potential acquisition device and a leakage monitoring device, and the potential acquisition device is electrically connected with the leakage monitoring device; the potential acquisition device is used for acquiring the potential of the surface of the vertical impermeable film; and the leakage monitoring device is used for determining whether leakage exists in the vertical impermeable film according to the electric potential acquired by the electric potential acquisition device. By adopting the technical scheme of the invention, the leakage detection can be carried out in the process of paving the vertical impermeable film, the defect that the leakage of the impermeable film can be detected only by local pollution in the prior art is overcome, and the damage to the surrounding environment and people can be avoided by adopting the technical scheme of the invention.

In the prior art, an electroosmosis (potential) method can accurately position a leakage part, has high sensitivity and high positioning precision, but cannot meet the requirement of monitoring timeliness; the conductivity method (also called resistivity method) can realize automatic monitoring, meets the requirement of monitoring timeliness, but has low positioning precision, is easy to be interfered when the conductivity method and the electroosmosis method run, and can easily generate sensing electrode deviation and larger acquired data error when the conductivity method and the electroosmosis method run for a long time, thereby influencing the accuracy of judging leakage conditions. Most of the traditional leakage detection methods are one-time monitoring performed during engineering implementation, and cannot keep a monitoring state for a long time, but leakage still possibly occurs in the long-time keeping process of the underground water barrier engineering along with factors such as time lapse, environmental change, engineering change and the like, so that environmental hidden danger exists, environmental management is not facilitated, and long-time monitoring is needed. In addition, the traditional monitoring method generally needs to adopt the walking visual inspection or manual on duty monitoring and other human working modes, has low efficiency and certain errors, can not find and eliminate false alarms, and needs to consume more manpower and material resources.

In summary, the existing single leakage detection method cannot meet the requirements of sensitivity, timeliness, low power consumption, easy construction, unattended operation and the like, and cannot automatically discover and eliminate sensor faults generated in long-term monitoring work, so that the problems of system accuracy and reliability such as misinformation and false alarm cannot be solved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims at solving the problems of long-term operation, accuracy, reliability and the like of a leakage monitoring system of an underground water barrier project, and provides a dynamic real-time monitoring method and a dynamic real-time monitoring system of the leakage of the underground water barrier project.

The technical scheme of the invention is as follows:

the dynamic real-time monitoring method for the leakage of the underground water barrier project is characterized by comprising the following steps of:

the method comprises the steps that a monitoring system and a data acquisition unit connected with the monitoring system are arranged, the monitoring system comprises at least one data processing unit, the data acquisition unit comprises a sensing array, an electrode control module and a data acquisition transmission module, the sensing array is composed of a plurality of monitoring nodes which are distributed on a working surface of an underground water barrier project, each monitoring node is provided with an array electrode fixing position, each monitoring node comprises a temperature and humidity method sensing module, an electric conductivity method sensing module and an electric osmosis method sensing module, and the three sensing modules alternately and independently run in a time sharing mode under the control of the electrode control module; the sensing array, the electrode control module and the data acquisition and transmission module share a power line and a signal line;

The monitoring system is used for respectively controlling a plurality of monitoring nodes which are arranged on the monitored underground water barrier engineering working surface and are connected with each other to collect data, then receiving the data, respectively analyzing and processing the data of each monitoring node through a temperature and humidity fluctuation rate method, a conductivity method and an electroosmosis method, judging whether leakage occurs in each monitoring node or not, judging whether the data collected by each node sensing array is normal or not, accurately positioning a leakage point or a sensing array with abnormal collected data, realizing long-term, dynamic and real-time unmanned monitoring, early warning and alarming of underground water barrier engineering leakage, and automatically eliminating false alarm.

The sensing arrays, the electrode control module and the data acquisition and transmission module work cooperatively with each other; the temperature and humidity sensing module comprises a probe type temperature and humidity transmitter, the conductivity sensing module comprises a conductivity array electrode, and the electroosmosis sensing module comprises an electroosmosis array electrode; the probe type temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode of each monitoring node are arranged on the same array electrode fixing position, are respectively and independently connected with the electrode control module and the data acquisition and transmission module, are mutually matched under the control of the monitoring unit and the electrode control module, and are used for implementing unmanned, automatic, real-time monitoring and false alarm elimination of a working face based on four working modes:

A mode: normal state monitoring mode

The monitoring system controls the temperature and humidity method sensing module array to keep a working state through the electrode control module, collects and uploads temperature and humidity data of each monitoring node according to preset working parameters, and the electric conduction array electrode and the electroosmosis array electrode keep a standby state;

when the data change rate of any monitoring node perceived by the temperature and humidity sensor module array reaches a set threshold value, triggering a monitoring system to control each monitoring node to be converted into a B cross check and preliminary positioning early warning mode;

b mode: cross checking and preliminary positioning and early warning mode

The monitoring system controls the temperature and humidity transmitter and the conductance array electrode to be electrified in a time-sharing way and alternately enter a working state through the electrode control module, respectively sends sensing data to the monitoring system, analyzes the acquired data based on a temperature and humidity fluctuation rate method and a conductivity method, compares the consistency of temperature and humidity fluctuation on different monitoring nodes of the monitored underground water barrier engineering working face with the resistivity fluctuation sensed by the conductance array electrode, and can preliminarily judge that monitoring node leakage exists if the temperature and humidity fluctuation is consistent with the resistivity fluctuation sensed by the conductance array electrode, and triggers the monitoring system to control each monitoring node to be converted into a C cross check and accurate positioning alarm mode; if the two are inconsistent, triggering a D cross positioning fault removal mode, and checking a temperature and humidity transmitter or a conductance array electrode with sensing data errors;

C mode: cross checking and accurate positioning and alarming mode

The monitoring system controls the conductance array electrode and the electroosmosis array electrode to be electrified in a time-sharing mode and alternately enter a working state through the electrode control module, respectively sends sensing data to the monitoring system, and the monitoring system compares the consistency of the conductivity fluctuation and the potential rate fluctuation of each monitoring node which is preliminarily judged to have leakage and is arranged on the same or different monitoring nodes of the monitored underground water barrier engineering working face based on the data acquired by the analysis of the conductivity method and the electroosmosis method, if the conductivity fluctuation and the potential rate fluctuation of one or more monitoring nodes are consistent, the monitoring node can be judged to have leakage, and the monitoring system is triggered to send the coordinates and the alarm information of the leakage monitoring node to a manager; if no conductivity variation of any monitoring node is consistent with the potential rate variation, triggering a D cross positioning fault removal mode, and checking a conductivity array electrode or an electroosmosis array electrode with sensing data errors;

d mode: cross positioning fault clearing mode

The monitoring system respectively controls the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode to be electrified in a time-sharing way and alternately enter a working state through the electrode control module, so that the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode are respectively controlled to send sensing data to the monitoring system, the monitoring system respectively carries out cross comparison on the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode of a monitoring node suspected to have abnormal data, and fault sensors in the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode of a specific monitoring node are detected and positioned, and then the fault sensors are calibrated; and after calibration, controlling the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode to be electrified in a time-sharing mode and alternately enter a working state, controlling the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode of the monitoring node to respectively send sensing data to a monitoring system, judging whether the data sent by the sensor of the monitoring node is normal or not after calibration, if the data is normal, automatically eliminating faults, and if the data is abnormal, automatically eliminating the data collected by the fault sensor of the monitoring node by the monitoring system, sending fault information to a manager, and manually eliminating the faults of the sensor of the monitoring node and then recovering the mode to operate so as to eliminate false alarm.

The dynamic real-time monitoring method for the leakage of the underground water barrier project is characterized by comprising the following steps:

s1: setting a monitoring system which comprises at least one data processing unit; the method comprises the steps that at least one data acquisition unit is arranged, the data acquisition unit comprises a sensing array, an electrode control module and a data acquisition transmission module, the sensing array is composed of a plurality of monitoring nodes which are distributed on a working surface of an underground water barrier project and comprise a plurality of sensing electrodes distributed in an array, each monitoring node comprises a temperature and humidity sensing module, a conductivity sensing module and an electroosmosis sensing module, and the three sensing modules alternately operate in a time-sharing mode and independently operate under the control of the electrode control module; the sensing array, the electrode control module and the data acquisition and transmission module share a power line and a signal line;

s2: normal a mode operation

The monitoring system controls each monitoring node to operate according to a normal monitoring A mode, the monitoring system controls an electrode control module (a built-in electric control switch) to respectively control the power-on and power-off states of a temperature and humidity method sensing array of each monitoring node, the temperature and humidity method sensing module working through power-on performs data acquisition, and the acquired data is sent to the monitoring system through a data acquisition and transmission module;

The monitoring system controls each monitoring node to process and analyze the data acquired by the temperature and humidity sensing module in the running process of the mode A, the data processing unit sequentially carries out in-situ comparison and adjacent comparison on the temperature and humidity sensing data acquired by a plurality of monitoring nodes on the received working surface according to a built-in analysis program (data analysis and positioning) and an alarm program, and if no abnormality occurs in the temperature and humidity data of any monitoring node, the mode A running is kept, the temperature and humidity sensing module in the sensing array only keeps a continuous working state and continuously acquires data, and the conductivity sensing module and the electroosmosis sensing module stand by;

s3: switching to B-mode operation

In the process of operating the mode A, if the temperature and humidity data of any monitoring node are abnormal and reach the pre-warning parameters set by a temperature and humidity method, the mode B is entered for cross checking, preliminary positioning and pre-warning, the working states of the temperature and humidity method sensing module and the conductivity method sensing module are verified alternately, and the monitoring node suspected to send leakage or faults is positioned and pre-warned preliminarily:

alternately triggering a temperature and humidity method sensing module and a conductivity method sensing module in the sensing array to alternately enter a continuous working state, acquiring data of all monitoring nodes, respectively transmitting the acquired temperature and humidity data and conductivity data by adopting a temperature and humidity method and a conductivity method to a data processing unit for cross checking, analysis and judgment, if the data of any monitoring node can reach preset temperature and humidity method and conductivity method alarm parameters at the same time, comparing and analyzing all monitoring nodes, primarily positioning and early warning all monitoring nodes suspected to leak, sending early warning information, and simultaneously triggering a control system to be converted into a C mode to operate; if the data of any monitoring node can reach preset alarm parameters of a temperature and humidity method and a conductivity method at the same time, comparing and analyzing all monitoring nodes, primarily positioning and early warning all suspected faults, triggering a control system to be converted into a D mode for operation, and eliminating the faulty monitoring nodes and eliminating the faults by management staff;

S4: switching to C mode operation

In the operation process of each monitoring node according to the B mode, the monitoring system controls the secondary cross check and accurate positioning of all monitoring nodes which are subjected to preliminary positioning and early warning and suspected to leak:

the control system alternately triggers the conductivity sensing module and the electroosmosis sensing module in the sensing array to enter a continuous working state, data acquisition is carried out on all monitoring nodes, the acquired conductivity value and potential value signal data are respectively transmitted to the data processing unit for cross checking, analysis and judgment, if the data of the suspected leakage monitoring nodes can reach preset alarm parameters of the conductivity method and the electroosmosis method at the same time, the comparison and analysis are carried out on all the suspected leakage monitoring nodes, all the monitoring nodes with leakage are accurately positioned and confirmed, alarm information is sent, and leakage is eliminated by a manager; if the suspected leakage monitoring node data can not reach preset conductivity method and electroosmosis method alarm parameters at the same time, comparing and analyzing all monitoring nodes, triggering a control system to be converted into D-mode operation, checking out the monitoring nodes with faults of the conductivity method sensing module and the electroosmosis method sensing module in the monitoring nodes, accurately positioning the faulty monitoring nodes, sending out early warning information, and removing the faults by a manager;

S5: switching to a mode operation:

and (3) repairing the leakage point or repairing and replacing the fault sensing module by the manager according to the early warning or alarming information of the steps (S2-S4), recovering the mode A operation by the monitoring system, and repeating the steps (S2-S4) according to the operation conditions of the working surface and the sensing module.

The dynamic real-time monitoring system for the leakage of the underground water barrier project is characterized by comprising a monitoring system and a data acquisition unit, wherein the monitoring system is connected with the monitoring system through a network, the data acquisition unit comprises at least one data processing unit, the data acquisition unit comprises a sensing array, an electrode control module and a data acquisition transmission module, the sensing array comprises a plurality of sensing electrodes arranged in an array (row and column), the sensing array consists of a plurality of monitoring nodes distributed on the working surface of the underground water barrier project, each monitoring node comprises a temperature and humidity sensing module, a conductivity sensing module and an electroosmosis sensing module, and the three sensing modules are mutually and alternately operated in a time sharing way and independently under the control of the electrode control module; the sensing array, the electrode control module and the data acquisition and transmission module share a power line and a signal line; the monitoring system is used for controlling and receiving the collected data of a plurality of monitoring nodes which are connected with each other on the working surface of the monitored groundwater barrier project, analyzing and processing the data of each monitoring node through a temperature and humidity fluctuation rate method, a conductivity method and an electroosmosis method respectively, judging whether leakage occurs in each monitoring node or not, judging whether the data collected by each node sensing array is normal or not, accurately positioning leakage points or sensing arrays with abnormal collected data, realizing long-term, dynamic and real-time unmanned monitoring, early warning and alarming of the leakage of the groundwater barrier project, and automatically eliminating false alarm.

According to the monitoring method and system, the temperature and humidity method, the conductivity method and the electroosmosis method are adopted to dynamically monitor leakage of the underground water blocking project in real time, normal state and real-time monitoring is implemented by the temperature and humidity method with the lowest power consumption, accurate positioning of the penetration point positions is implemented by the conductivity method and the electroosmosis method, and the three methods are matched with each other to perform cross check and automatically check fault sensors, so that false alarm is avoided, and remote and unattended automatic monitoring can be realized. This method has the following advantages over other methods:

(1) The dynamic real-time monitoring method for leakage of the underground water barrier project provided by the invention is characterized in that a temperature and humidity method with lower power consumption is used for implementing normal state and real-time monitoring, and when suspected leakage occurs, a conductivity method and an electroosmosis method are used for accurately positioning leakage points.

(2) The dynamic real-time monitoring method for the leakage of the underground water blocking engineering effectively improves the accuracy of leakage detection, and the common tracer method and the group well pumping test method can only determine whether leakage and approximate leakage range occur or not, and have low accuracy.

(3) The method for dynamically monitoring the leakage of the underground water barrier engineering in real time can realize dynamic real-time monitoring, the traditional monitoring method is that observation wells are respectively arranged inside and outside the underground water barrier engineering, the leakage condition of an anti-seepage system is indirectly reflected through the change of water level and water quality, the efficiency is low, the period is long and the effect is poor, when the abnormality of the water level and the water quality is observed, the leakage has occurred for a long time, the damage to the environment is large, the whole operation is simple, after equipment is arranged, the equipment can be monitored according to the preset flow without manual operation, the acquired data is transmitted to the monitoring system in real time, the field condition is mastered in time, the countermeasure is adopted, the disadvantages of the traditional method are overcome, and the leakage condition can be responded quickly.

(4) The dynamic real-time monitoring method for the leakage of the underground water blocking engineering can effectively improve the reliability of data acquisition, and a single group of sensors can be influenced by site conditions to generate phenomena such as unstable signals or data fluctuation, and the like, so that the conditions such as false alarm signals, faults and the like are easy to generate, and the judgment of the leakage is influenced. The invention adopts three sensing modules to run alternately and independently in a mutually time-sharing way, monitors underground water blocking engineering based on four working modes, and performs cross check among different sensing modules, thereby avoiding inaccurate data caused by single-group sensor faults and other reasons, increasing check comparison when data are abnormal, effectively reducing false alarm and false report caused by single-method detection errors, and improving the reliability of the data.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a dynamic real-time monitoring system for leakage of groundwater isolation engineering according to an embodiment of the invention;

FIG. 2 is a schematic diagram of an array sensor module and electrode numbering of each monitoring node according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a module composition structure of a monitoring system according to an embodiment of the present invention;

fig. 4 is a schematic block diagram of the group of monitoring nodes in fig. 3.

In the figure:

1. a sensing array; 2. an electrode control module; 3. a data acquisition and transmission module; 4. a monitoring system; 5. an underground water blocking project; A. an emitter electrode; B. and monitoring the nodes.

Detailed Description

The technical scheme of the invention is described in detail below with reference to the accompanying drawings and examples.

The invention will now be further described with reference to the drawings and the accompanying examples.

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the term "connected" should be interpreted broadly, and for example, it may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1-4, the dynamic real-time monitoring method and system for leakage of the underground water barrier project provided by the invention alternately adopt a temperature and humidity method, a conductivity method and an electroosmosis method to dynamically monitor the leakage of the underground water barrier project in real time, implement normal state and real-time monitoring by the temperature and humidity method with the lowest power consumption, and accurately position the penetration point by the conductivity method and the electroosmosis method, and the three methods are mutually matched to carry out cross check and automatic troubleshooting on the fault sensor so as to avoid false alarm, and can realize remote and unattended automatic monitoring and better solve the problems of long-term operation, accuracy and reliability of the leakage monitoring system of the underground water barrier project.

Specifically, the leakage dynamic real-time monitoring method using the technology of the invention can accurately position the leakage point, and a typical embodiment thereof is shown in fig. 1. In this embodiment, the data acquisition unit includes a sensor array 1, an electrode control module 2, and a data acquisition transmission module 3. The sensing array 1 comprises a plurality of sensing electrodes which are regularly arranged in rows and columns, and the sensing electrodes cooperate with each other to form the sensing array; the sensing array 1 consists of a plurality of monitoring nodes which are distributed on the working surface of the groundwater barrier project 5, each monitoring node B is provided with an array electrode fixing position, each monitoring node comprises a temperature and humidity sensing module, a conductivity sensing module and an electroosmosis sensing module, and the three sensing modules run alternately and independently in a time sharing way under the control of an electrode control module; the sensing array, the electrode control module and the data acquisition and transmission module share a power line and a signal line; the monitoring system 4 controls and receives the collected data of a plurality of monitoring nodes which are connected with each other on the monitored ground water barrier engineering work surface.

The dynamic real-time monitoring method for leakage of the underground water barrier project provided by the embodiment comprises the following steps:

The sensing arrays, the electrode control module and the data acquisition and transmission module work cooperatively; the temperature and humidity sensing module comprises a probe type temperature and humidity transmitter, the conductivity sensing module comprises a conductivity array electrode, and the electroosmosis sensing module comprises an electroosmosis array electrode; the probe type temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode of each monitoring node are arranged on the same array electrode fixing position, are respectively and independently connected with the electrode control module and the data acquisition and transmission module, are mutually matched under the control of the monitoring unit and the electrode control module, and are used for implementing unmanned, automatic, real-time monitoring and false alarm elimination of a working face based on four working modes:

a mode: normal state monitoring mode

B mode: cross checking and preliminary positioning and early warning mode

c mode: cross checking and accurate positioning and alarming mode

D mode: cross positioning fault clearing mode

The specific implementation steps of the monitoring method are as follows:

s1: a local front-end monitoring system or a remote centralized monitoring system in different places is arranged outside the underground water blocking engineering and is used as a monitoring system, and a data processing unit is arranged in the monitoring system. Arranging a plurality of monitoring nodes on a working surface of the underground water blocking project, wherein the monitoring nodes correspond to monitoring points needing to be monitored respectively; and the sensing array and the electrode control module are connected with each monitoring node, and the operation parameters are acquired according to preset monitoring data. The preset threshold value of the embodiment is 20%, and the preset threshold value can be set according to the field conditions in practical application, so that the sensitivity and the alarm frequency of the monitoring system can be improved due to the lower preset threshold value. The monitoring system adopts a mode of time-sharing power-on and one-by-one inspection to collect data of all the monitoring nodes until the last monitoring node is detected, so that one monitoring node and the monitoring nodes which are adjacent to each other at the upper part, the lower part, the left part and the right part are collected once, and one monitoring period is completed; then data acquisition is carried out in a second monitoring period, and the like is carried out to obtain the data of each monitoring node in a plurality of monitoring periods;

specifically, an observation well is arranged on the outer side of the underground water blocking project, a transmitting electrode is placed, the transmitting electrode is connected with an electrode control module, a plurality of gridding and distributed monitoring nodes are determined on the vertical surface of the observation well, namely on a working surface, and fixed position coordinates of the monitoring nodes are determined. The sensor modules of the preassembled and integrated monitoring nodes are arranged on corresponding fixed-position coordinates; the electroosmosis sensing module comprises a transmitting electrode and a plurality of receiving electrodes, wherein the receiving electrodes form a receiving electrode array; and placing each receiving electrode on the surface adjacent to the inner side wall of the underground water barrier project, establishing a rectangular coordinate system by taking the shortest distance between the transmitting electrode and the underground water barrier project as an axis, wherein the shortest distance is parallel to the underground water barrier project and is an y axis, the shortest distance is perpendicular to the underground water barrier project and is an x axis, and uniformly placing each receiving electrode along the y axis and forming a receiving electrode array along the x axis.

The step S1 specifically comprises the following steps:

s11: a local front end monitoring system or a remote centralized monitoring system in different places is arranged outside the underground water blocking project and is used as a monitoring system, and a data processing unit is arranged in the monitoring system;

s12: arranging a plurality of monitoring nodes on a working surface of the underground water blocking project, wherein the monitoring nodes correspond to monitoring points needing to be monitored respectively; a sensing array, an electrode control module and a data acquisition and transmission module are respectively arranged at each monitoring node position, wherein the sensing array consists of a temperature and humidity sensing module, a conductivity sensing module and an electroosmosis sensing module, and the three sensing modules alternately and respectively and independently run under the control of the electrode control module; the sensing array, the electrode control module and the data acquisition and transmission module share a power line, a signal line and an array electrode fixing position; all the monitoring nodes are connected with the monitoring system to form a data acquisition unit; the method specifically comprises the following steps:

s121: arranging an observation well at the outer side of the underground water blocking project, determining a plurality of gridding and distributed monitoring nodes on the vertical surface of the observation well, namely the working surface, and determining the fixed position coordinates of the monitoring nodes;

S122: the sensor modules of the preassembled and integrated monitoring nodes are arranged on corresponding fixed-position coordinates; the electroosmosis sensing module comprises a transmitting electrode and a plurality of receiving electrodes, wherein the receiving electrodes form a receiving electrode array;

placing each receiving electrode on the surface adjacent to the inner side wall of the underground water barrier project, establishing a rectangular coordinate system by taking the shortest distance between the transmitting electrode and the underground water barrier project as an axis, wherein the shortest distance is parallel to the underground water barrier project and is a y axis, the shortest distance is perpendicular to the underground water barrier project and is an x axis, and uniformly placing each receiving electrode along the y axis and forming a receiving electrode array along the x axis; each receiving electrode has the ability to supply and measure electrical signals.

S13: the sensor array and the electrode control module are connected with each monitoring node, the electrode control module collects operation parameters according to preset monitoring data, one sensor module of each monitoring node is sequentially selected in the sensor array to be electrified according to one of A, B, C, D working modes instructed by the monitoring system, voltage is applied between the two electrodes, and temperature, humidity, conductivity or potential data of the sensor module are measured and uploaded to the monitoring system; the monitoring system adopts a mode of time-sharing power-on and one-by-one inspection to collect data of all the monitoring nodes until the last monitoring node is detected, so that one monitoring node and the monitoring nodes which are adjacent to each other at the upper part, the lower part, the left part and the right part are collected once, and one monitoring period is completed; and then data acquisition in a second monitoring period is carried out, and the like, so that data of each monitoring node in a plurality of monitoring periods are obtained and provided for steps S2-S4 for corresponding analysis and processing.

S2: the monitoring system controls each monitoring node to operate according to a normal monitoring A mode, the monitoring system controls an electrode control module (a built-in electric control switch) to respectively control the power-on and power-off states of the temperature and humidity method sensing arrays of each monitoring node, the temperature and humidity method sensing modules working under power-on collect data, and the collected data are sent to the monitoring system through a data collection and transmission module; the monitoring system controls each monitoring node to process and analyze the data acquired by the temperature and humidity sensing module in the running process of the mode A, the data processing unit sequentially carries out in-situ comparison and adjacent comparison on the temperature and humidity sensing data acquired by a plurality of monitoring nodes on the received working surface according to a built-in analysis program (data analysis and positioning) and an alarm program, and if no abnormality occurs in the temperature and humidity data of any monitoring node, the mode A running is kept, the temperature and humidity sensing module in the sensing array only keeps a continuous working state and continuously acquires data, and the conductivity sensing module and the electroosmosis sensing module stand by; the method specifically comprises the following steps:

s21: each temperature and humidity sensor module in the temperature and humidity sensor module array is arranged on the corresponding fixed position of the monitoring node one by one, and the temperature and humidity sensor module is specifically a probe type temperature and humidity transmitter;

S22: the temperature and humidity transmitter of the monitoring node is connected with the electrode control module, the data acquisition and transmission module and the power line, and the electrode control module controls the power-on, power-off and working states of the temperature and humidity transmitter; the data acquisition and transmission module transmits the acquired data to the monitoring system;

s23: in the monitoring operation process, if the temperature and humidity data of any monitoring node are abnormal and reach the pre-warning parameters set by a temperature and humidity method, the monitoring system is triggered to enter a B mode for cross checking, preliminary positioning and pre-warning.

In this embodiment, the temperature and humidity sensor module is a probe type temperature and humidity transmitter, and is configured to check monitoring data of a synchronous air temperature and humidity sensor (module) arranged at key monitoring nodes (bottom of working face and horizontally), and the temperature and humidity sensor of the temperature and humidity transmitter is built-in and small in volume; by adopting a 485 communication interface standard ModBus-RTU communication protocol, the communication address and the baud rate can be set, and the communication distance is furthest 2000 meters. Product model: RS-WS-N01.

S3: in the process of operating the mode A, when the temperature and humidity data of any monitoring node is abnormal and reaches the 20% of the early warning threshold set by the temperature and humidity method, the mode B is entered for cross checking, preliminary positioning and early warning, the working states of the temperature and humidity method sensing module and the conductivity method sensing module are alternately verified, and the monitoring node suspected to send leakage or faults is preliminarily positioned and early warned: the temperature and humidity method sensing module and the conductivity method sensing module in the alternating triggering sensing array alternately enter a continuous working state, data acquisition is carried out on all monitoring nodes, and the acquired temperature and humidity data and conductivity data are respectively sent to a data processing unit for cross checking, analysis and judgment by adopting a temperature and humidity method and a conductivity method. When the data of any monitoring node can reach 20% of the alarm threshold value preset by the temperature and humidity method and the conductivity method, all monitoring nodes are compared and analyzed, all monitoring nodes suspected of leakage are initially positioned and early-warned, early-warning information is sent, and meanwhile, the control system is triggered to be converted into C-mode operation. The threshold value or threshold value interval corresponding to each method can be set according to actual needs and the prior art.

Step S3, which specifically comprises the following steps:

s31: when the B mode is operated, the monitoring system enables the temperature and humidity sensing module and the conductivity sensing module to alternately enter a working state, and compares and cross-verifies the data of the same monitoring node and the adjacent monitoring nodes to judge whether the temperature and humidity rate of each monitoring node is synchronous with the change of the conductivity,

s32: if the monitoring nodes are synchronous, marking the monitoring nodes as suspected leakage nodes, and triggering the system to enter a C mode;

s33: if the monitoring nodes are not synchronous, marking the monitoring nodes as suspected sensing fault nodes, and triggering the system to enter a D mode.

S4: in the operation process of each monitoring node according to the B mode, the monitoring system controls the secondary cross check and accurate positioning of all monitoring nodes which are subjected to preliminary positioning and early warning and suspected to leak: the control system alternately triggers the conductivity sensing module and the electroosmosis sensing module in the sensing array to enter a continuous working state, data acquisition is carried out on all monitoring nodes, the acquired conductivity value and potential value signal data are respectively sent to the data processing unit for cross checking, analysis and judgment, when the data of the suspected leakage monitoring nodes can reach 20% of the preset alarm threshold value of the conductivity and electroosmosis at the same time, all the suspected leakage monitoring nodes are compared and analyzed, all the monitoring nodes with leakage are accurately positioned and confirmed, alarm information is sent, and leakage is eliminated by a manager.

In step S4 described in this embodiment, in the process of controlling each monitoring node by the monitoring system according to the C mode, for the primary positioning and early warning of all monitoring nodes suspected to leak or sensing failure in step S3, performing secondary cross check and accurate positioning, the method specifically includes the following steps:

s41: the control system alternately triggers the conductivity sensing module and the electroosmosis sensing module in the sensing array to enter a continuous working state, performs data acquisition on all monitoring nodes, respectively sends the acquired conductivity value and potential value signal data acquired by the conductivity method and the electroosmosis method to a data processing unit for cross checking, analysis and judgment,

s42: if the data of the suspected leakage monitoring nodes can reach preset alarm parameters of a conductivity method and an electroosmosis method at the same time, comparing and analyzing all the suspected leakage monitoring nodes, accurately positioning and confirming all the monitoring nodes with leakage, sending alarm information, and eliminating the leakage by a manager;

s43: if the suspected leakage monitoring node data can not reach preset conductivity method and electroosmosis method alarm parameters at the same time, comparing and analyzing all monitoring nodes, triggering a control system to be converted into D-mode operation, checking out the monitoring nodes with faults of the conductivity method sensing module and the electroosmosis method sensing module in the monitoring nodes, accurately positioning the faulty monitoring nodes, sending out early warning information, and removing the faults by management staff.

S5: and repairing the leakage point by the manager according to the alarm information, and recovering the A-mode operation of the monitoring system.

In this embodiment, in order to determine the leakage position, the sensing electrodes that are arranged and form the sensing array may be sequentially numbered, so that when the monitoring system prompts the leakage alarm signal, a specific sensing electrode corresponding to the sensing electrode in the corresponding array may be quickly found, and then the corresponding leakage position may be quickly determined according to the number (array coordinate) of the sensing electrode. Specifically, as shown in fig. 2, when the sensing electrodes (including the transmitting or receiving electrodes) are numbered according to rows (from a to i), the first row of electrodes may be labeled a, and the electrodes are numbered sequentially to determine the numbers of the first row of electrodes respectively: a1 A2, until ai: the second row of electrodes is marked as b, the electrodes are numbered in sequence, and the numbers of the second row of electrodes are respectively determined: b1 B2, up to bi; the third row of electrodes is marked as c, the electrodes are numbered sequentially, and the numbers of the third row of electrodes are respectively determined: c1 C2, up to ci; so that the electrode of the ith row and the j row can be analogized according to the requirement; where i and j are both natural numbers greater than 0. The receiving electrodes of the other rows are numbered in turn according to the above principle, where the receiving electrodes may be denoted by j, and aj denotes the receiving electrode of the j-th column of the first row. By analogy, each electrode is uniquely numbered, and leakage occurs when the combined conductivity values of the electrodes numbered ai and ai+1 exceed a threshold, i.e., the region between the first row, column i, and column i+1. In order numbering the array electrodes of the present embodiment by column, as shown in fig. 2, the first column electrode may be labeled L1, which includes electrodes a1, b1, c1, and so on up to i1; the second column of electrodes is labeled L2, which includes electrodes a2, b2, c2, and so on up to i2; the third column of electrodes is labeled L3, which includes electrodes a3, b3, c3, and so on up to i3; and so on, and so on up to i, the ith column electrode is labeled Li, which includes electrodes ai, bi, ci, etc.

The embodiment provides a dynamic real-time monitoring system for leakage of an underground water barrier project, which is used for realizing the dynamic real-time monitoring method for leakage of the underground water barrier project, and comprises a monitoring system connected with each other through a network and a data acquisition unit connected with the monitoring system, wherein the monitoring system comprises at least one data processing unit, and the data acquisition unit comprises a plurality of monitoring nodes distributed on a working surface of the underground water barrier project; each monitoring node comprises a sensing array, an electrode control module and a data acquisition and transmission module, wherein the sensing array consists of a temperature and humidity sensing module, a conductivity sensing module and an electroosmosis sensing module, and the three sensing modules alternately and independently run in a time sharing way under the control of the electrode control module; the sensing array, the electrode control module and the data acquisition and transmission module share a power line, a signal line and an array electrode fixing position; the monitoring system is used for controlling and receiving the collected data of a plurality of monitoring nodes which are connected with each other on the working surface of the monitored groundwater barrier project, analyzing and processing the data of each monitoring node through a temperature and humidity fluctuation rate method, a conductivity method and an electroosmosis method respectively, judging whether leakage occurs in each monitoring node or not, judging whether the data collected by each node sensing array is normal or not, accurately positioning leakage points or sensing arrays with abnormal collected data, realizing long-term, dynamic and real-time unmanned monitoring, early warning and alarming of the leakage of the groundwater barrier project, and automatically eliminating false alarm.

The sensing array, the electrode control module and the data acquisition and transmission module of each monitoring node work cooperatively; the temperature and humidity sensing module comprises a probe type temperature and humidity transmitter, the conductivity sensing module comprises a conductivity array electrode, and the electroosmosis sensing module comprises an electroosmosis array electrode; the probe type temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode of each monitoring node are arranged on the same array electrode fixing position, are respectively and independently connected with the electrode control module and the data acquisition and transmission module, are mutually matched under the control of the monitoring system and the electrode control module, and are used for implementing unmanned, automatic, real-time monitoring and false alarm elimination of a working face based on A, B, C, D four working modes.

Example two

Referring to fig. 1, the present embodiment further provides a fault detection method for dynamic real-time monitoring of leakage based on the first embodiment, and the method for dynamic real-time monitoring of leakage is applied to detect abnormal situations.

The method and system for dynamically monitoring leakage of underground water barrier engineering in real time provided by the embodiment further comprise, based on the step S1-S5 in the embodiment:

S6: the monitoring system controls each monitoring node to operate according to a normal monitoring A mode, the monitoring system controls an electrode control module (a built-in electric control switch) to respectively control the power-on and power-off states of the temperature and humidity method sensing arrays of each monitoring node, the temperature and humidity method sensing modules working under power-on collect data, and the collected data are sent to the monitoring system through a data collection and transmission module;

s7: in the process of operating the mode A, when the temperature and humidity data of any monitoring node is abnormal and reaches the 20% of the early warning threshold set by the temperature and humidity method, the mode B is entered for cross checking, preliminary positioning and early warning, the working states of the temperature and humidity method sensing module and the conductivity method sensing module are alternately verified, and the monitoring node suspected to send leakage or faults is preliminarily positioned and early warned: the temperature and humidity method sensing module and the conductivity method sensing module in the alternating triggering sensing array alternately enter a continuous working state, data acquisition is carried out on all monitoring nodes, and the acquired temperature and humidity data and conductivity data are respectively sent to a data processing unit for cross checking, analysis and judgment by adopting a temperature and humidity method and a conductivity method. When the data of any monitoring node can not reach the preset 20% alarm threshold value of the temperature and humidity method and the conductivity method, comparing and analyzing all monitoring nodes, preliminarily positioning and early warning all monitoring nodes suspected to be faulty, triggering the control system to be switched into a D mode for operation, and eliminating the faulty monitoring node and removing the fault by a manager;

S8: the monitoring system respectively controls the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode to be electrified in a time-sharing way and alternately enter a working state through the electrode control module, so that the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode are respectively controlled to send sensing data to the monitoring system, the monitoring system respectively carries out cross comparison on the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode of a monitoring node suspected to have abnormal data, and fault sensors in the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode of a specific monitoring node are detected and positioned, and then the fault sensors are calibrated; and after calibration, controlling the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode to be electrified in a time-sharing mode and alternately enter a working state, controlling the temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode of the monitoring node to respectively send sensing data to a monitoring system, judging whether the data sent by the sensor of the monitoring node is normal or not after calibration, if the data is normal, automatically eliminating faults, and if the data is abnormal, automatically eliminating the data collected by the fault sensor of the monitoring node by the monitoring system, sending fault information to a manager, and manually eliminating the faults of the sensor of the monitoring node and then recovering the mode to operate so as to eliminate false alarm.

The dynamic real-time monitoring method and system for leakage of the underground water barrier project provided by the embodiment of the invention can realize remote and unattended automatic monitoring. The monitoring system is used for controlling and receiving the collected data of a plurality of monitoring nodes which are connected with each other on the working surface of the ground water barrier project to be monitored, analyzing and processing the data of each monitoring node through a temperature and humidity fluctuation rate method, a conductivity method and an electroosmosis method respectively, judging whether leakage occurs in each monitoring node or not, judging whether the data collected by each node sensing array is normal or not, accurately positioning leakage points or collecting the sensing array with abnormal data, realizing long-term, dynamic and real-time unmanned monitoring, early warning and alarming of the ground water barrier project leakage, automatically eliminating false alarm, well overcoming various defects of the prior art, being capable of running stably and accurately for a long time, and having low power consumption and high accuracy.

In other embodiments of the present invention, the technical effects described in the present invention may be achieved by performing specific selection of different schemes within the ranges of the steps, the systems, the thresholds, and the parameters described in the present invention, so the present invention is not listed one by one.

The above description is only of the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention or modifications to equivalent embodiments using the methods and technical contents disclosed above, without departing from the scope of the technical solution of the present invention. All equivalent changes of the components, proportions and processes according to the invention are covered in the protection scope of the invention.

Claims

1. The dynamic real-time monitoring method for the leakage of the underground water barrier project is characterized by comprising the following steps of:

2. The method for dynamically monitoring leakage of underground water barrier engineering according to claim 1, wherein the sensing array of the data acquisition unit, the electrode control module and the data acquisition transmission module work cooperatively with each other; the temperature and humidity sensing module comprises a probe type temperature and humidity transmitter, the conductivity sensing module comprises a conductivity array electrode, and the electroosmosis sensing module comprises an electroosmosis array electrode; the probe type temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode of each monitoring node are arranged on the same array electrode fixing position, are connected with the electrode control module and the data acquisition and transmission module, are matched with each other under the control of the monitoring system and the electrode control module, and are used for implementing unmanned, automatic, real-time monitoring and false alarm elimination of a working face based on four working modes:

A mode: normal state monitoring mode

b mode: cross checking and preliminary positioning and early warning mode

C mode: cross checking and accurate positioning and alarming mode

d mode: cross positioning fault clearing mode

3. The method for dynamically monitoring leakage of underground water barrier engineering according to claim 1 or 2, comprising the steps of:

s1: setting a monitoring system which comprises at least one data processing unit; setting at least one data acquisition unit, wherein the data acquisition unit comprises a sensing array, an electrode control module and a data acquisition transmission module, the sensing array consists of a plurality of monitoring nodes which are distributed on a working surface of an underground water barrier project, each monitoring node is provided with an array electrode fixing position, each monitoring node comprises a temperature and humidity method sensing module, a conductivity method sensing module and an electroosmosis method sensing module, and the three sensing modules alternately and independently run in a time-sharing way under the control of the electrode control module; the sensing array, the electrode control module and the data acquisition and transmission module share a power line and a signal line;

s2: normal a mode operation

The monitoring system controls each monitoring node to operate according to a normal monitoring mode A, the monitoring system controls the electrode control module to respectively control the power-on and power-off states of the temperature and humidity method sensing arrays of each monitoring node, the temperature and humidity method sensing modules working under power-on collect data, and the collected data are transmitted to the monitoring system through the data collection and transmission module;

The monitoring system controls each monitoring node to process and analyze the data acquired by the temperature and humidity sensing module in the running process of the mode A, the data processing unit sequentially carries out in-situ comparison and adjacent comparison on the temperature and humidity sensing data acquired by a plurality of monitoring nodes on the received working surface according to a built-in analysis program and an alarm program, and if no abnormality occurs to the temperature and humidity sensing data of any monitoring node, the mode A running is kept, the temperature and humidity sensing module in the sensing array only keeps a continuous working state and continuously acquires the data, and the conductivity sensing module and the electroosmosis sensing module stand by;

s3: switching to B-mode operation

S4: switching to C mode operation

S5: switching to a mode operation:

4. The method for dynamically monitoring leakage of a groundwater barrier engineering according to claim 3, wherein the step S1 specifically comprises the following steps:

s12: arranging a plurality of monitoring nodes on a working surface of the underground water blocking project, wherein the monitoring nodes correspond to monitoring points needing to be monitored respectively; a sensing array is arranged at each monitoring node position, the sensing array consists of a temperature and humidity sensing module, a conductivity sensing module and an electroosmosis sensing module, and the three sensing modules alternately and independently run under the control of an electrode control module; the sensing array, the electrode control module and the data acquisition and transmission module share a power line and a signal line to form a data acquisition unit and are connected with the monitoring system;

5. The method for dynamically monitoring leakage of a groundwater barrier engineering according to claim 4, wherein the step S12 comprises the following steps:

s121: arranging an observation well outside the underground water blocking engineering, placing a transmitting electrode, connecting the transmitting electrode with an electrode control module, determining a plurality of gridding and distributed monitoring nodes on the vertical surface of the observation well, namely on a working surface, and determining fixed position coordinates of the monitoring nodes;

6. The method for dynamically monitoring leakage of a groundwater barrier engineering according to claim 3, wherein the step S2 comprises the following steps:

7. The method for dynamically monitoring leakage of a groundwater barrier engineering according to claim 3, wherein the step S3 comprises the following steps:

8. The method for dynamically monitoring leakage of underground water barrier engineering according to claim 3, wherein in step S4, the monitoring system controls each monitoring node to perform secondary cross check and accurate positioning on all monitoring nodes suspected to have leakage or sensing faults in the primary positioning and early warning of step S3 in the running process of each monitoring node according to the C mode, and the method specifically comprises the following steps:

9. The system is characterized by being used for realizing the dynamic real-time monitoring method of the leakage of the underground water barrier project, and comprises a monitoring system and a data acquisition unit, wherein the monitoring system is mutually connected through a network, the data acquisition unit is connected with the monitoring system, the monitoring system comprises at least one data processing unit, the data acquisition unit comprises a sensing array, an electrode control module and a data acquisition transmission module, the sensing array consists of a plurality of monitoring nodes which are distributed on the working surface of the underground water barrier project, each monitoring node is provided with an array electrode fixing position, each monitoring node comprises a temperature and humidity sensing module, a conductivity sensing module and an electroosmosis sensing module, and the three sensing modules are mutually and alternately operated in a time sharing way and independently under the control of the electrode control module; the sensing array, the electrode control module and the data acquisition and transmission module share a power line and a signal line; the monitoring system is used for controlling and receiving the collected data of a plurality of monitoring nodes which are connected with each other on the working surface of the monitored groundwater barrier project, analyzing and processing the data of each monitoring node through a temperature and humidity fluctuation rate method, a conductivity method and an electroosmosis method respectively, judging whether leakage occurs in each monitoring node or not, judging whether the data collected by each node sensing array is normal or not, accurately positioning leakage points or sensing arrays with abnormal collected data, realizing long-term, dynamic and real-time unmanned monitoring, early warning and alarming of the leakage of the groundwater barrier project, and automatically eliminating false alarm.

10. The system for dynamic real-time monitoring of groundwater barrier engineering leakage according to claim 9, wherein the sensing array, the electrode control module and the data acquisition and transmission module cooperate with each other; the temperature and humidity sensing module comprises a probe type temperature and humidity transmitter, the conductivity sensing module comprises a conductivity array electrode, and the electroosmosis sensing module comprises an electroosmosis array electrode; the probe type temperature and humidity transmitter, the conductance array electrode and the electroosmosis array electrode of each monitoring node are arranged on the same array electrode fixing position, are respectively and independently connected with the electrode control module and the data acquisition and transmission module, are mutually matched under the control of the monitoring system and the electrode control module, and are used for implementing unmanned, automatic, real-time monitoring and false alarm elimination of a working face based on A, B, C, D four working modes.