WO2021134929A1

WO2021134929A1 - Structure activation dual-parameter monitoring system and monitoring method

Info

Publication number: WO2021134929A1
Application number: PCT/CN2020/080578
Authority: WO
Inventors: 刘伟韬; 孟祥喜; 杜衍辉; 秦月云; 于师建; 刘玉本; 申建军; 宋增谋; 高传朋
Original assignee: 山东科技大学
Priority date: 2019-12-31
Filing date: 2020-03-23
Publication date: 2021-07-08
Also published as: CN111077583A; CN111077583B

Abstract

A structure activation dual-parameter monitoring system and monitoring method, relating to the technical field of mine safety monitoring. The system comprises a borehole detection system, a data collection system, a data conversion system, a data analysis system, and a data storage device. The borehole detection system comprises a borehole detection device; the data collection system is used for collecting an electric field change signal received by a measuring electrode, and performing discrimination and screening; the data conversion system is used for converting the electric field change signal into a digital signal by means of the A/D in a host, the digital signal being stored in the form of calculating dual parameters, i.e., apparent resistivity and apparent polarizability, in a detected structure; the data analysis system is used for drawing an apparent resistivity-time curve and an apparent polarizability-time curve for the digital signal by means of the display screen of a host system or exporting from a digital signal source, and by analyzing the changes of the resistivity and polarizability, monitoring and forecasting a structure activation state in a timely manner. Technical support can be provided for mine tunnel excavation and working face stoping work.

Description

Constructing activated dual-parameter monitoring system and monitoring method

Technical field

The invention belongs to the technical field of mine safety monitoring, and specifically relates to a structure activation dual-parameter monitoring system and method suitable for the tunneling process of coal mines, and in particular relates to whether structures such as adjacent faults or joints are activated during tunneling and working face mining. Real-time detection and prediction technology.

Background technique

Geological structures such as faults, collapsed columns, and high-angle fissure zones are easily activated by mining and excavation deflection, which can induce geological disasters such as permeation. Therefore, real-time monitoring of the activation of these geological structures during the mining process, and mastering of their damage mechanism and activation law have important economic and practical significance for predicting and preventing the occurrence of geological disasters.

At present, scholars at home and abroad have done a lot of research on geological disasters such as water inrush caused by structural activation, and have achieved a lot of meaningful results. In the prior art, the methods for determining structural activation mainly include "water inrush coefficient method", "lower three-zone theory", "lower four-zone theory", "in-situ tension and zero failure theory" and "key layer theory" These results have studied structural activation from the perspectives of mine pressure theory, hydrogeological theory and engineering geomechanics, and have been successfully applied to on-site safety production guidance. However, there are still insufficient fine exploration techniques and equipment for concealed water-conducting structures, which has caused the problem of inadequate advancement and precautionary measures for the location, distribution, and nature of mine water-conducting channels.

Summary of the invention

technical problem

The solution to the problem

Technical solutions

The purpose of the present invention is to provide a structure activation dual-parameter monitoring system and monitoring method. The monitoring system can monitor the activation degree of structures such as interrupted layers and collapsed columns in the process of roadway excavation and working face stoping in real time, and monitor the dual-parameter monitoring system according to the structure activation Obtained dual-parameter data of apparent resistivity and apparent polarizability, comprehensively judge the degree of structural activation, and provide technical support for mine roadway excavation and working face mining.

One of the tasks of the present invention is to provide a structured activation dual parameter monitoring system, which adopts the following technical solutions:

A structure activation dual-parameter monitoring system, which includes a preliminary geological detection system, a borehole detection system, a data collection system, a data conversion system, a data analysis system, a data storage device and a host system,

The borehole detection system includes a borehole detection device and related circuits. The borehole detection device includes two parts: a fixed detection device and a mobile detection device. The fixed detection device includes a guide probe, a measuring electrode, and a power supply electrode. The measurement electrode is connected with a signal transmission device, and the electric field change signal received by the measurement electrode is transmitted through the signal transmission device; the movement detection device is measured along the borehole after the installation of the fixed detection device is completed. Point, accurate signal detection with a step distance of 2-4 meters;

The data collection system is connected to the measurement electrode, and the data collection system is mainly used to collect the electric field change signal received through the measuring electrode, and perform screening and screening, and then collect and store the interfering electric field signal after eliminating the interference electric field signal;

The data conversion system is used to convert the electric field change signal stored by the data collection system into a digital signal through the A/D in the host, so as to calculate the apparent resistivity and apparent polarizability of the detection structure. The form is stored in the said data storage device;

The data analysis system is used to draw the apparent resistivity-time curve and the apparent polarizability-time curve through the display screen of the host system or export the digital signal source to draw the apparent resistivity-time curve and the apparent polarizability-time curve through the digital signal converted by the data conversion system. The changes in resistivity and polarizability can be monitored and forecasted in real time on the activation state of the structure.

As a preferred solution of the present invention, the above-mentioned related lines include a signal transmission line and a power supply cable. The above-mentioned data collection system is connected to the above-mentioned measuring electrode through the above-mentioned signal transmission line. When a fixed detection device needs to be installed, the above-mentioned guide probe, The measuring electrode and the power supply electrode are fixed together on the distance measuring push rod, and the distance measuring push rod described above pushes them to a fixed position in the borehole.

As another preferred solution of the present invention, the above-mentioned fixed detection device is arranged at the front end of the borehole 10-15 meters away from the construction area, and the borehole is sealed by grouting after the arrangement.

Further, the above-mentioned bore diameter is larger than the diameter of the measuring electrode, and the ratio of the bore diameter to the diameter of the measuring electrode should be 1.4-1.6:1.

Another task of the present invention is to provide a structure activation dual-parameter monitoring method, which adopts the above-mentioned structure activation dual-parameter monitoring system, and the monitoring method sequentially includes the following steps:

a. Set the drilling parameters according to the structural characteristics and location;

b. Perform on-site drilling operations. When the roadway excavation and mining face are advanced to the adjacent geological structure 15-20 meters, select 3-5 drilling observation points at intervals along the width direction of the advancement in the excavation roadway and goaf area. Drill holes at a certain inclination in the roof, floor and coal rock wall of the roadway or goaf. The depth of the hole is determined according to the location and scope of the geological structure. Generally, the depth of the hole is 40-80m;

c. After the drilling operation is ready, install the drilling detection system, first clean the construction drilling, and then select the number of monitoring points of the mobile detection device and the installation location of the fixed detection device according to the drilling depth. The fixed detection device is installed at a distance from the geology Construct a 15-20m front end of the borehole, connect it to the data collection system placed in the trough through a signal transmission line, connect the signal transmission line and power supply line to the data collection system through trenching and shallow burying, and fix the measuring electrode in the detection device The power supply electrode and the transmission line are all fixed on the distance measuring push rod. Through the distance measuring push rod, they are accurately placed in the borehole and sealed by grouting. They are sealed in the front end of the borehole as a long-term detection, and the rest of the borehole layout is the same as this hole. the same;

d. Start the monitoring system, use the power supply electrode to supply power to the earth, measure the electric field change signal through the arranged fixed detection device, the measured electric field change signal will enter the data collection system through the signal transmission line, and the data collection system will perform according to the collected signals Screening and filtering, collecting and storing data after eliminating interference;

e. Data collection, using the data collection system to collect the stored electric field signals, preprocessing and A/D conversion into digital signals, and at the same time outputting the digital signals to the data analysis system and storage to the data storage device, using The system effectively establishes a mine structure monitoring database, and uses big data for analysis and research. The digital signal mainly includes the apparent resistivity and apparent polarizability parameters in the detection structure;

f. Data processing, analyzing and processing the changes of the digital signal, and constructing a graph of changes in the relationship between apparent resistivity, apparent polarizability and time;

g. Data analysis, according to the changes in resistivity and polarizability shown in the drawn apparent resistivity-time curve and apparent polarizability-time broken line chart, comprehensively analyze the activation degree of the structure near each borehole at different times, and according to the structure Activate the judgment standard for judgment;

h. Comprehensive processing of apparent resistivity and apparent susceptibility data of different boreholes: comprehensively analyze the apparent resistivity and apparent susceptibility data of different boreholes at the same time, and use surfer software to process and draw out the structure at a certain time Contour map of apparent resistivity and apparent polarizability nearby;

i. Determining the structural abnormal area: according to the apparent resistivity and apparent polarizability contour map of the borehole, combined with the structural activation judgment standard in step g, delimit the structural abnormal area and the stable area;

j. Determination of structural activation zone: comprehensively analyze the apparent resistivity and apparent polarizability contour maps of the borehole to delimit the structural activation zone.

In the above step d, the collection system can adjust the data collection frequency according to actual needs. Generally, it can be collected once a day. When the structure is unstable, it can be collected every half hour to every hour. The number and frequency of collection can be based on the structure. The degree of activation and work need to be set flexibly.

The above-mentioned structural activation judgment standards in step g are:

(1) When the resistivity decreases and the polarizability increases, the geological structure is in an activated state and must contain water sources. At this time, corresponding safety precautions should be taken;

(2) When the resistivity increases and the polarization rate increases, the geological structure may contain water and may be in an activated state. At this time, the main precautions should be taken, or corresponding measures should be taken based on the on-site work situation;

(3) When the resistivity decreases and the polarizability decreases, the geological structure may contain water and may be in an activated state. At this time, the main precautions should be taken, or corresponding measures should be taken in conjunction with the on-site work situation;

(4) When the resistivity increases and the polarizability decreases, there must be no water in the geological structure, and it is not in an activated state. At this time, it is in a safe state.

The beneficial effects of the invention

Beneficial effect

Compared with the prior art, the present invention brings the following beneficial technical effects:

(1) It realizes the combination of geophysical prospecting and drilling in roadway excavation detection, using resistivity method and induced polarization method at the same time to obtain multiple sets of different data at different measurement points; and processing, analyzing and predicting the data;

(2) It realizes the flexible setting and control of measuring points, and the measuring points are selected flexibly and randomly according to the geophysical characteristics around the roadway, which saves the cost and the detection period at the same time;

(3) The detection mode of simultaneous transmission at multiple frequency points and simultaneous reception at equal frequency points not only avoids the strong interference background of humanity and nature, improves the identification and processing ability of weak signals, but also tests the resistivity and polarization of the formation. Rate parameters to improve the accuracy of the data.

Brief description of the drawings

Description of the drawings

The present invention will be further explained below in conjunction with the accompanying drawings:

Figure 1 is a schematic diagram of the system workflow;

Figure 2 is a schematic diagram of the working principle of the system;

Figure 3 is a schematic diagram of the principle structure of the drilling detection system;

Figure 4 is a schematic diagram of the drilling layout of the working face;

Figure 5 shows the line graphs of apparent resistivity-time and apparent polarizability-time of borehole 1, borehole 2, borehole 3, borehole 4, borehole 5, and borehole 6, respectively;

Figure 6 is a geological plan of polarizability data;

Figure 7 is a geological plan of resistivity data;

Figure 8 is a plan view of the structural activation zone determination.

Invention embodiment

Embodiments of the present invention

The present invention proposes a structured activation dual-parameter monitoring system and monitoring method. In order to make the advantages and technical solutions of the present invention clearer and clearer, the present invention will be further described below in conjunction with specific embodiments.

Figure 1 is a schematic diagram of the system's working flow, Figure 2 is a schematic diagram of the system's working principle, and Figure 3 is a schematic diagram of the principle structure of the borehole detection system. Detected faults, collapsed columns, joints and other geological structures are monitored and forecasted in real time under conditions affected by mining. Exploration boreholes are set up around the geological structure, and measurement electrodes are installed by using a fixed probe at the front end of the borehole. In the borehole, the measuring electrode is connected to the data collection system and the on-site analysis host through a signal transmission device.

The invention constructs and activates a dual-parameter monitoring system, which includes a preliminary geological detection system, a borehole detection system, a data collection system, a data conversion system, a data analysis system, a data storage device and a host system.

The above-mentioned early geological detection system mainly refers to the use of high-density electrical method, transient electromagnetic method and other detection technologies to accurately detect the geological structure around the mining roadway and working face through detection equipment, and record the detected faults, collapse columns and other structural areas And marks, provide a basis for drilling detection.

The above-mentioned borehole detection system includes a borehole detection device, a signal transmission line, a power supply cable, and a ranging push rod. The borehole detection device includes two parts: a fixed detection device and a mobile detection device. The fixed detection device and the mobile detection device have the same structure. The detection device includes a guide probe, a measuring electrode and a power supply electrode. When a fixed detection device is required, the guide probe, measuring electrode and power supply electrode are fixed together on the ranging push rod and pushed into the borehole by the ranging push rod. Fixed position.

The measurement electrode is connected with a signal transmission device, which transmits the electric field change signal received by the measurement electrode through the signal transmission device; the mobile detection device measures points along the borehole after the installation of the fixed detection device, with a step distance of 2-4 meters for accuracy Signal detection.

The above-mentioned mobile detection device is composed of measuring electrodes and power supply electrodes arranged in a borehole, and is used for detecting mobile measuring points. According to the depth of the borehole, the distance between the measuring points is 2-4 meters for detection.

The above-mentioned fixed detection device is arranged at the front end of the borehole 10-15 meters away from the structure area, and the borehole is sealed by grouting after it is arranged.

The above-mentioned hole diameter is larger than the diameter of the measuring electrode, and the ratio of the hole diameter to the diameter of the measuring electrode should be 1.4-1.6:1.

The power supply electrode of the present invention is provided with two groups, one is located behind the tunnel excavation or the working face advancement, and the other is located in the construction borehole, thereby forming a closed loop. The drilling of the tunnel excavation or the working face advancement is used for structural activation water exploration detection.

The above-mentioned data collection system, data conversion system, data analysis system, and data storage equipment can be used for reference with the existing technology, and the structure thereof will not be described in detail.

The two-parameter monitoring method for structure activation of the present invention will be described in detail below.

Construct a dual-parameter monitoring method for activation, the specific monitoring and judgment methods include:

a. Set drilling parameters (including drilling inclination, drilling depth and drilling location) according to the structural characteristics and location;

b. On the basis of step a, carry out on-site drilling operations. The specific steps include: when roadway excavation and working face mining advance to the adjacent geological structure 15-20 meters, the excavation roadway and goaf area are separated in the direction of advancement. Select 3-5 borehole observation points, and drill holes with a certain inclination into the roadway or the roof, floor and coal wall of the goaf. The depth of the hole depends on the location and scope of the geological structure. The general hole depth is 40- Ranging from 80m;

c. After the drilling operation is ready, install the drilling detection system. The specific steps include: cleaning the construction drilling to prevent the debris in the hole from affecting the detection system. According to the drilling depth, select the number of monitoring points of the mobile detection device and Fixed detection device installation location. The fixed detection device is installed at the front end of the borehole 15-20 meters away from the geological structure. It is connected to the data collection system placed in the trough through the signal transmission line. The signal transmission line and the power supply line are shallowly buried by trenching Connected to the data collection system, the measuring electrode, power supply electrode and transmission line in the fixed detection device are all fixed on the ranging push rod, which is accurately placed in the borehole through the ranging push rod, and sealed with grouting as a long-term detection and storage At the front end of the drilling hole, the other drilling arrangements are the same as this hole;

d. Construct and activate the dual-parameter monitoring system to start. The specific steps include: use the power supply electrode to supply power to the earth, measure the electric field change signal through the arranged fixed detection device, and the measured electric field change signal will enter the data collection system through the signal transmission line. The collection system will screen and filter according to the collected signals, and collect and store the interference data after eliminating the interference. The collection system can adjust the data collection frequency according to actual needs. Generally, it can be collected once a day, and it can be carried out every half an hour when the structure is unstable. To collect once every hour, the number and frequency of collection can be flexibly set according to the activation degree of the structure and work needs;

e. Data collection, the specific steps include: pre-processing and A/D conversion of the electric field signals collected and stored by the data collection system into digital signals, and at the same time outputting the digital signals to the data analysis system and storing them in the data storage device. The system is effective Establish a mine structure monitoring database and use big data for analysis and research. The digital signal mainly contains the apparent resistivity and apparent polarizability parameters in the detection structure;

f. Data processing: Analyze and process the changes in the dual-parameter digital signal of the apparent resistivity and apparent susceptibility after the system has collected and converted, and construct a graph of the relationship between apparent resistivity, apparent susceptibility and time;

g. Data analysis, according to the changes in resistivity and polarizability shown in the drawn apparent resistivity-time curve and apparent polarizability-time broken line chart, comprehensively analyze the activation degree of the structure near each borehole at different times, and the structure is activated The judgment criteria are as follows:

(2) When the resistivity increases and the polarizability increases, the geological structure may contain water and may be in an activated state. At this time, the main precautions should be taken, or corresponding measures should be taken in conjunction with the on-site work situation;

(4) When the resistivity increases and the polarizability decreases, there must be no water in the geological structure, and it is not in an activated state. At this time, it is in a safe state;

h. Comprehensive processing of the apparent resistivity and apparent susceptibility data of different boreholes: comprehensively analyze the apparent resistivity and apparent susceptibility data of different boreholes at the same time, and use the surf software for processing, and a certain time can be drawn Contour maps of apparent resistivity and apparent polarizability near the structure;

After the above-mentioned fixed detection device is installed and sealed, the mobile detection device can still be used as an independent detection device to divide the borehole into a number of detection points according to the depth. The step distance of the detection points is 2-4 meters, and then follow steps d, e, f can establish the apparent resistivity-time curve and the apparent polarizability-distance curve, so that it can be obtained whether there is geological structure activation in the detection range of a cylindrical space with a radius of 20-30 meters centered on the borehole axis.

A detailed description will be given below with reference to the embodiments of FIGS. 4 to 8.

Taking a coal mine face as an example, during the mining process of the coal face, the structural activation monitoring of the coal face is further explained.

Step 1: Perform fine detection of adjacent areas at different distances from the working face along the trench to detect the specific geological structure distribution and specific location and range near the working face. It can be found that there are two faulted geological structures on the floor of the working face. Depending on the aquifer, the upper part of the fault has strong water richness;

Step 2: According to the distribution of the fault structure, carry out the drilling detection and layout, respectively arrange 2 drilling holes on the left fault, and 4 drilling holes on the larger fault on the right, as shown in Figure 4, respectively with dip angles Drill 45° to the vicinity of the fault. The depth of the borehole is 10-20 meters from the edge of the fault. After the borehole is cleaned, the fixed detection device is installed at the front end of the borehole 15-20 meters away from the geological structure. In the data collection system connection in the trough, the measuring electrode and the power supply electrode and the transmission line in the fixed detection device are fixed on the distance measuring push rod. Through the distance measuring push rod, they are accurately placed in the borehole and are grouted and sealed. The other drilling arrangements are the same as this hole;

Step 3: Turn on the power supply, measure the electric field change signal through the fixed detection device arranged in the borehole, and transmit the electric field change signal to the data collection system through the signal transmission line. The data collection system is carried out every half a day when the roadway is tunneling. Data collection, when the working face is mining, it will be changed to a data collection every 20-30 minutes;

Step 4: The electric field change signal collected and stored by the data collection system is pre-processed and A/D converted into a digital signal. The digital signal mainly contains the dual parameters of apparent resistivity and apparent polarizability in the geological structure.

Step 5: Collect the dual parameters of apparent resistivity and apparent polarizability after being processed by the constructed and activated dual-parameter monitoring system;

Step 6: Analyze and process the changes in the dual-parameter digital signal of the apparent resistivity and apparent susceptibility after the system has collected and converted, and construct a diagram of the relationship between apparent resistivity, apparent susceptibility and time, as shown in Figure 5 .

Step 7: According to the structural activation criterion, it can be known that the structures near borehole 5 and borehole 6 are in an activated state, the structures near borehole 1 and borehole 2 are in a stable state, and borehole 3 and borehole 4 are in an abnormal state. More in-depth analysis should be carried out in conjunction with other measures;

Step 8: Use surf software to draw contour lines of apparent resistivity and apparent susceptibility data of different boreholes at the same time to delimit the range of structural anomalies and stable regions, as shown in Figures 6 and 7;

Step 9: Comprehensively analyze the apparent resistivity and apparent polarizability contour maps of the borehole, and delimit the structural activation zone, as shown in Figure 8.

The parts not mentioned in the above methods can be realized by adopting or learning from existing technologies.

The specific embodiments described herein are merely examples to illustrate the spirit of the present invention. Those skilled in the technical field of the present invention can make various modifications or additions to the specific embodiments described or use similar alternatives, but they will not deviate from the spirit of the present invention or exceed the definition of the appended claims. Range.

Claims

A structure activation dual-parameter monitoring system, which includes a preliminary geological detection system, a borehole detection system, a data collection system, a data conversion system, a data analysis system, a data storage device and a host, and is characterized by:

The borehole detection system includes a borehole detection device and related circuits. The borehole detection device includes two parts: a fixed detection device and a mobile detection device. The fixed detection device includes a guide probe, a measuring electrode, and a power supply electrode. The measurement electrode is connected with a signal transmission device, and the electric field change signal received by the measurement electrode is transmitted through the signal transmission device; the movement detection device is measured along the borehole after the installation of the fixed detection device is completed. Point, with a step distance of 2-4 meters for accurate signal detection; the data collection system is connected to the measurement electrode, and the data collection system is mainly used to collect the electric field change signal received through the measurement electrode, and perform Screening, collecting and storing after eliminating interfering electric field signals;

The data conversion system is used to convert the electric field change signal stored by the data collection system into a digital signal through the A/D in the host, so as to calculate the apparent resistivity and apparent polarizability of the detection structure. The form is stored in the said data storage device;

The data analysis system is used to draw the apparent resistivity-time curve and the apparent susceptibility-time curve through the display screen of the host system or export the digital signal source to draw the apparent resistivity-time curve and the apparent polarizability-time curve. The changes of resistivity and polarizability can be used to monitor the activation state of the structure in real time.
The structure activation dual-parameter monitoring system according to claim 1, characterized in that: the related line includes a signal transmission line and a power supply cable, and the data collection system communicates with the measurement electrode through the signal transmission line When connecting, when a fixed detection device needs to be installed, the guiding probe, the measuring electrode and the power supply electrode are jointly fixed on the distance measuring push rod, and the distance measuring push rod pushes them to a fixed position in the borehole.
The structure activation dual-parameter monitoring system according to claim 2, characterized in that: the fixed detection device is arranged at the front end of the borehole 10-15 meters away from the structure area. The way of slurry is sealed.
The structure activation dual-parameter monitoring system according to claim 3, characterized in that: the bore diameter is larger than the diameter of the measuring electrode, and the ratio of the bore diameter to the diameter of the measuring electrode should be 1.4-1.6:1.
A structure activation dual parameter monitoring method, characterized in that it adopts the structure activation dual parameter monitoring system of any one of claims 1-4, and the monitoring method sequentially includes the following steps:

a. Set the drilling parameters according to the structural characteristics and location;

b. Perform on-site drilling operations. When the roadway excavation and mining face are advanced to the adjacent geological structure 15-20 meters, select 3-5 drilling observation points at intervals along the width direction of the advancement in the excavation roadway and goaf area. Drill holes at a certain inclination in the roof, floor and coal rock wall of the roadway or goaf. The depth of the hole is determined according to the location and scope of the geological structure. Generally, the depth of the hole is 40-80m;

c. After the drilling operation is ready, install the drilling detection system, first clean the construction drilling, and then select the number of monitoring points of the mobile detection device and the installation location of the fixed detection device according to the drilling depth. The fixed detection device is installed at a distance from the geology Construct a 15-20m front end of the borehole, connect it to the data collection system placed in the trough through a signal transmission line, connect the signal transmission line and power supply line to the data collection system through trenching and shallow burying, and fix the measuring electrode in the detection device The power supply electrode and the transmission line are all fixed on the distance measuring push rod, and the distance measuring push rod is used to accurately place the hole in the borehole, and the grouting seal is carried out, which is sealed in the front end of the borehole as a long-term detection. The other drilling arrangements are all the same as this The same hole

d. Start the monitoring system, use the power supply electrode to supply power to the earth, measure the electric field change signal through the arranged fixed detection device, the measured electric field change signal will enter the data collection system through the signal transmission line, and the data collection system will perform according to the collected signals Screening and filtering, collecting and storing data after eliminating interference;

e. Data collection, using the data collection system to collect the stored electric field signals, preprocessing and A/D conversion into digital signals, and at the same time outputting the digital signals to the data analysis system and storage to the data storage device, using The system effectively establishes a mine structure monitoring database, and uses big data for analysis and research. The digital signal mainly includes the apparent resistivity and apparent polarizability parameters in the detection structure;

f. Data processing, analyzing and processing the changes of the digital signal, and constructing a graph of changes in the relationship between apparent resistivity, apparent polarizability and time;

g. Data analysis, according to the changes in resistivity and polarizability shown in the drawn apparent resistivity-time curve and apparent polarizability-time broken line chart, comprehensively analyze the activation degree of the structure near each borehole at different times, and according to the structure Activate the judgment standard for judgment;

h. Comprehensive processing of the apparent resistivity and apparent susceptibility data of different boreholes: comprehensively analyze the apparent resistivity and apparent susceptibility data of different boreholes at the same time, and use the surf software to process and draw the structure at a certain time Contour map of apparent resistivity and apparent polarizability nearby;

i. Determining the structural abnormal area: According to the apparent resistivity and apparent polarizability contour map of the borehole, combined with the structural activation judgment standard in step g, delimit the structural abnormal area and the stable area;

j. Determination of structural activation zone: comprehensively analyze the apparent resistivity and apparent polarizability contour maps of the borehole to delimit the structural activation zone.
The structure activation dual-parameter monitoring method according to claim 5, wherein the structure activation judgment criteria in step g are:

(1) When the resistivity decreases and the polarizability increases, the geological structure is in an activated state and must contain water sources. At this time, corresponding safety precautions should be taken;

(2) When the resistivity increases and the polarizability increases, the geological structure may contain water and may be in an activated state. At this time, the main precautions should be taken, or corresponding measures should be taken based on the on-site work situation;

(3) When the resistivity decreases and the polarizability decreases, the geological structure may contain water and may be in an activated state. At this time, the main precautions should be taken, or corresponding measures should be taken based on the on-site work situation;

(4) When the resistivity increases and the polarizability decreases, there must be no water in the geological structure, and it is not in an activated state, so it is in a safe state.