CN111077583A - Structure activation double-parameter monitoring system and monitoring method - Google Patents
Structure activation double-parameter monitoring system and monitoring method Download PDFInfo
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- CN111077583A CN111077583A CN201911402106.3A CN201911402106A CN111077583A CN 111077583 A CN111077583 A CN 111077583A CN 201911402106 A CN201911402106 A CN 201911402106A CN 111077583 A CN111077583 A CN 111077583A
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Abstract
The invention discloses a structure activation double-parameter monitoring system and a monitoring method, and belongs to the technical field of mine safety monitoring. The device comprises a drilling detection system, a data collection system, a data conversion system, a data analysis system and data storage equipment, wherein the drilling detection system comprises a drilling detection device, and the data collection system is used for collecting electric field change signals received by a measuring electrode and carrying out screening; the data conversion system is used for converting the electric field change signal into a digital signal through A/D in the host computer, and storing the digital signal in a mode of calculating dual parameters of apparent resistivity and apparent polarizability of the detection structure; the data analysis system is used for drawing an apparent resistivity-time curve and an apparent polarizability-time curve by the digital signal through a display screen of the host system or a derived digital signal source, and monitoring and forecasting the structural activation state in real time by analyzing the change conditions of the resistivity and the polarizability. The invention can provide technical support for mine roadway excavation and working face stoping work.
Description
Technical Field
The invention belongs to the technical field of mine safety monitoring, and particularly relates to a structure activation double-parameter monitoring system and method suitable for a coal mine roadway tunneling process, in particular to a real-time detection and prediction technology for detecting whether structures such as adjacent faults or joints are activated or not in the roadway tunneling and working face stoping processes.
Background
Geological structures such as faults, collapse columns, high-angle fractured zones and the like are easily affected and activated by mining and tunneling disturbance to induce geological disasters such as water permeation and the like. Therefore, the activation condition of the geological structures in the mining process is monitored in real time, the damage mechanism and the activation rule of the geological structures are mastered, and the method has important economic significance and practical significance for predicting and preventing geological disasters.
At present, scholars at home and abroad make a great deal of research on geological disasters such as water inrush caused by tectonic activation and obtain a great deal of meaningful results. In the prior art, methods related to structural activation judgment mainly comprise a water inrush coefficient method, a lower three-band theory, a lower four-band theory, an in-situ fracture and zero-position damage theory and a key layer theory, and the results research on structural activation from the aspects of mine pressure theory, hydrogeology theory, engineering geomechanics and the like and are successfully applied to on-site safety production guidance. However, the current fine exploration technology and equipment for the concealed water guide structure are insufficient, and the problems that the prior knowledge and precautionary measures on the position, distribution, property and the like of a mine water guide channel are not in place are caused.
Disclosure of Invention
The invention aims to provide a structure activation double-parameter monitoring system and a monitoring method, the monitoring system can monitor the structure activation degree of a fault layer, a collapse column and the like in the process of roadway excavation and working face recovery in real time, and comprehensively judge the structure activation degree according to apparent resistivity and apparent polarizability double-parameter data obtained by monitoring the structure activation double-parameter monitoring system, thereby providing technical support for mine roadway excavation and working face recovery.
One of the tasks of the invention is to provide a structure activation double-parameter monitoring system, which adopts the following technical scheme:
a structure activation double-parameter monitoring system comprises a prophase geological detection system, a drilling detection system, a data collection system, a data conversion system, a data analysis system, a data storage device and a host system,
the drilling detection system comprises a drilling detection device and a related circuit, wherein the drilling detection device comprises a fixed detection device and a movable detection device, the fixed detection device comprises a guide probe, a measuring electrode and a power supply electrode, the measuring electrode is connected with a signal transmission device, and an electric field change signal received by the measuring electrode is transmitted through the signal transmission device; the mobile detection device carries out accurate signal detection at a step pitch of 2-4 meters along a measuring point in the drill hole after the fixed detection device is installed;
the data collection system is connected with the measuring electrode and is mainly used for collecting electric field change signals received by the measuring electrode, screening and collecting and storing after interference electric field signals are eliminated;
the data conversion system is used for converting the electric field change signals stored by the data collection system into digital signals through A/D in the host machine, and storing the digital signals into the data storage equipment in a mode of calculating dual parameters of apparent resistivity and apparent polarizability of a detection structure;
the data analysis system is used for drawing an apparent resistivity-time curve and an apparent polarizability-time curve by the digital signals converted by the data conversion system through a display screen of a host system or a derived digital signal source, and monitoring and forecasting the structural activation state in real time by analyzing the change conditions of the resistivity and the polarizability.
As a preferred aspect of the present invention, the related circuit includes a signal transmission line and a power supply cable, the data collection system is connected to the measuring electrode through the signal transmission line, when the fixed detection device needs to be installed, the guiding probe, the measuring electrode and the power supply electrode are jointly fixed on the ranging push rod, and the ranging push rod pushes the ranging push rod to a fixed position in the borehole.
In another preferred embodiment of the present invention, the fixed detecting device is arranged at the front end of the borehole at a distance of 10-15 meters from the formation area, and the borehole is sealed by grouting after the fixed detecting device is arranged.
Furthermore, the diameter of the drilling hole is larger than the diameter of the measuring electrode, and the ratio of the diameter of the drilling hole to the diameter of the measuring electrode is 1.4-1.6: 1.
Another task of the present invention is to provide a structural activation two-parameter monitoring method, which uses the above structural activation two-parameter monitoring system, and the monitoring method sequentially includes the following steps:
a. setting drilling parameters according to the structural characteristics and the positions;
b. performing on-site drilling operation, when a roadway is tunneled and a working face is stoped and propelled to be 15-20 m close to a geological structure, selecting 3-5 drilling observation points at intervals in a mining roadway and a goaf along the propelling width direction, and successively constructing drilling holes with a certain inclination angle in a top plate, a bottom plate and a coal rock wall of the roadway or the goaf, wherein the hole depth is determined according to the position and the range of the geological structure, and the general hole depth is 40-80 m;
c. after the drilling operation is ready, a drilling detection system is installed, firstly, construction drilling is cleaned, then, according to the drilling depth, the number of monitoring points of a movable detection device and the installation position of a fixed detection device are selected, the fixed detection device is installed at the front end of a drilling hole 15-20 meters away from a geological structure and is connected with a data collection system arranged in a crossheading through a signal transmission line, the signal transmission line and a power supply line are connected to the data collection system in a trenching and shallow burying mode, a measuring electrode, a power supply electrode and a transmission line in the fixed detection device are all fixed on a ranging push rod and are accurately placed in the drilling hole through the ranging push rod, grouting sealing is carried out, the fixed detection device is used as long-term detection and is sealed at the front end of the drilling;
d. starting a monitoring system, supplying power to the ground by using a power supply electrode, measuring an electric field change signal by using a well-arranged fixed detection device, enabling the measured electric field change signal to enter a data collection system through a signal transmission line, screening and filtering the collected signal by the data collection system, and collecting and storing the interference data after eliminating the interference data;
e. collecting data, namely collecting stored electric field signals by using the data collection system, converting the electric field signals into digital signals through preprocessing and A/D conversion, simultaneously outputting the digital signals to a data analysis system and storing the digital signals to data storage equipment, effectively establishing a mine structure monitoring database by using the system, and analyzing and researching by using big data, wherein the digital signals mainly comprise dual parameters of apparent resistivity and visual polarization rate in a detection structure;
f. data processing, namely analyzing and processing the change condition of the digital signal to construct a relation change diagram of apparent resistivity, apparent polarizability and time;
g. data analysis, namely comprehensively analyzing the activation degree of the structure near each drill hole at different moments according to the change conditions of the resistivity and the polarizability shown by the drawn apparent resistivity-time curve and the apparent polarizability-time line graph, and judging according to the structure activation judgment standard;
h. comprehensively processing the apparent resistivity and apparent polarizability data of different drill holes: comprehensively analyzing the apparent resistivity and apparent polarizability data of different drill holes at the same moment, processing by utilizing surfer software, and drawing contour graphs of the apparent resistivity and the apparent polarizability near a certain moment structure;
i. and (3) determining a structural abnormal area: according to the apparent resistivity and apparent polarizability contour map of the drill hole and the structural activation judgment standard in the step g, the structural abnormal area and the structural stable area are defined;
j. configuration of the activation region determination: and comprehensively analyzing the apparent resistivity and apparent polarizability contour map of the drill hole, and defining a structural activation region.
In the step d, the collection system can adjust the data collection frequency according to actual needs, generally, the data can be collected once a day, the data can be collected once every half hour to once an hour when the structure is unstable, and the collection frequency and frequency can be flexibly set according to the structure activation degree and the working needs.
The above structural activation judgment criteria in step g are respectively:
(1) when the resistivity is reduced and the polarizability is increased, the geological structure is in an activated state and must contain water, and corresponding safety precaution measures are taken;
(2) when the resistivity is increased and the polarizability is increased, water may be contained in the geological structure and the geological structure may be in an activated state, and at the moment, the main precaution is needed, or corresponding measures are taken in combination with the field working condition;
(3) when the resistivity is reduced and the polarizability is reduced, water may be contained in the geological structure and the geological structure may be in an activated state, and at the moment, the main precaution is needed, or corresponding measures are taken in combination with the field working condition;
(4) when the resistivity is increased and the polarizability is decreased, the geological structure is not activated and is in a safe state because water is not contained in the geological structure.
Compared with the prior art, the invention has the following beneficial technical effects:
(1) the combination of geophysical prospecting and drilling during roadway tunneling detection is realized, and a plurality of groups of different data are obtained at different measuring points by means of a mode of simultaneously carrying out a resistivity method and an induced polarization method; and processing, analyzing and forecasting the data;
(2) the flexible arrangement and the mastering of the measuring points are realized, the measuring points are flexibly and randomly selected according to the geophysical characteristics around the roadway, the cost is saved, and the detection period is saved;
(3) the detection working mode of simultaneously transmitting multi-frequency points and simultaneously receiving equal-frequency points is adopted, so that the strong interference background of humanity and nature is avoided, the identification and processing capability of weak signals is improved, the resistivity and the polarization rate parameters of the stratum are tested, and the accuracy of data is improved.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic system flow diagram;
FIG. 2 is a schematic diagram of the system operation principle;
FIG. 3 is a schematic structural view of a borehole detection system;
FIG. 4 is a schematic view of a face drilling arrangement;
FIG. 5 shows apparent resistivity-time and apparent polarizability-time line graphs for borehole 1, borehole 2, borehole 3, borehole 4, borehole 5, borehole 6, respectively;
FIG. 6 is a geological plan of polarizability data;
FIG. 7 is a resistivity data geological plan;
fig. 8 is a plan view of a structured active region determination.
Detailed Description
The invention provides a structure activation double-parameter monitoring system and a monitoring method, and in order to make the advantages and technical scheme of the invention clearer and clearer, the invention is further explained by combining specific embodiments.
Fig. 1 is a schematic diagram of the system working process, fig. 2 is a schematic diagram of the system working principle, and fig. 3 is a schematic diagram of the principle structure of the borehole detection system: the invention discloses a structure activation double-parameter monitoring system, which is based on the early detection process, carries out real-time monitoring and forecasting on geological structures such as detected faults, collapse columns, joints and the like under the condition of being influenced by mining, arranges detection drill holes around the geological structures, installs measuring electrodes in the drill holes by adopting a measuring method that a fixed probe is arranged at the front end of the drill holes, and is connected with a data collecting system and a field analysis host through a signal transmission device.
The invention discloses a structure activation double-parameter monitoring system which comprises a prophase geological detection system, a drilling detection system, a data collection system, a data conversion system, a data analysis system, data storage equipment and a host system.
The early-stage geological detection system mainly detects the geological structure conditions around the excavation roadway and the working face accurately by using detection technologies such as a high-density electrical method and a transient electromagnetic method through detection equipment, records and marks the detected structural regions such as faults and collapse columns, and provides a basis for drilling detection.
Foretell drilling detection system, including drilling detection device, signal transmission line, supply cable and range finding push rod, drilling detection device includes fixed detection device and removal detection device two parts, and fixed detection device is the same with removal detection device structure, and fixed detection device includes direction probe, measuring electrode and power supply electrode, and when needs installation fixed detection device, with direction probe, measuring electrode and power supply electrode fix jointly on range finding push rod, by range finding push rod with its propelling movement to drilling in fixed position.
The measuring electrode is connected with a signal transmission device, and an electric field change signal received by the measuring electrode is transmitted through the signal transmission device; the movable detection device carries out accurate signal detection along measuring points in the drill hole at a step pitch of 2-4 meters after the fixed detection device is installed.
The mobile detection device consists of a measuring electrode and a power supply electrode which are arranged in a drill hole, detects mobile measuring points, and detects the measuring points at intervals of 2-4 meters according to the depth of the drill hole.
The fixed detection device is arranged at the front end of a drill hole at a position 10-15 meters away from a construction area, and the drill hole is sealed in a grouting mode after the fixed detection device is arranged.
The diameter of the drilling hole is larger than the diameter of the measuring electrode, and the ratio of the diameter of the drilling hole to the diameter of the measuring electrode is 1.4-1.6: 1.
The power supply electrodes are arranged in two groups, one is positioned behind the tunneling or working face propelling part, and the other is positioned in the construction drill hole, so that a closed loop is formed, and the drilling hole of the tunneling or working face propelling part is utilized for structure activation water detection.
The data collection system, the data conversion system, the data analysis system and the data storage device are only required to be used for reference in the prior art, and the structures of the data collection system, the data conversion system, the data analysis system and the data storage device are not described in detail.
The method for monitoring the structural activation double parameters of the present invention is explained in detail below.
The method for monitoring the construction and activation double parameters comprises the following steps:
a. setting drilling parameters (including a drilling inclination angle, a drilling depth and a drilling position) according to the structural characteristics and the positions;
b. on the basis of the step a, the method carries out the field drilling operation, and comprises the following specific steps: when a roadway is tunneled and a working face is stoped and pushed to be adjacent to a geological structure for 15-20 m, 3-5 drilling observation points are selected at intervals in a digging roadway and a goaf along the pushing direction, drilling holes with a certain inclination angle are successively constructed in a top plate, a bottom plate and a coal rock wall of the roadway or the goaf, the hole depth is determined according to the position and the range of the geological structure, and the general hole depth is different from 40-80 m;
c. after the drilling operation is ready, a drilling detection system is installed, and the method specifically comprises the following steps: cleaning construction drill holes, avoiding foreign matters in the holes from influencing a detection system, selecting the number of monitoring points of a movable detection device and the installation position of a fixed detection device according to the depth of the drill holes, installing the fixed detection device at the front end of the drill hole 15-20 m away from a geological structure, connecting the fixed detection device with a data collection system arranged in a crossheading through a signal transmission line, connecting the signal transmission line and a power supply line to the data collection system in a trenching and shallow burying manner, fixing a measuring electrode, a power supply electrode and a transmission line in the fixed detection device on a ranging push rod, accurately placing the fixed detection device in the drill holes through the ranging push rod, performing grouting sealing, and storing the fixed detection device at the front end of the drill holes as long-term detection, wherein the;
d. the method comprises the following specific steps of constructing an activation double-parameter monitoring system and starting the activation double-parameter monitoring system: the power supply electrode is used for supplying power to the ground, the electric field change signal is measured through the arranged fixed detection device, the measured electric field change signal enters the data collection system through the signal transmission line, meanwhile, the data collection system can screen and filter according to the collected signal, and collect and store after interference data is eliminated, the data collection system can adjust data collection frequency according to actual needs, generally, the data collection system can collect data once every day, the data collection system can collect data once every half hour to every hour in the unstable construction period, and the collection frequency and frequency can be flexibly set according to the construction activation degree and the working needs;
e. data collection, the concrete steps include: electric field signals collected and stored by a data collection system are preprocessed and converted into digital signals through A/D, the digital signals are output to a data analysis system and stored in data storage equipment, a mine structure monitoring database is effectively established by the system, analysis and research are carried out by big data, and the digital signals mainly comprise dual parameters of apparent resistivity and apparent polarizability in a detection structure;
f. data processing, namely analyzing and processing the change conditions of the dual-parameter digital signals of the apparent resistivity and the apparent polarizability acquired and converted by the system, and constructing a change diagram of the relationship between the apparent resistivity and the apparent polarizability and the time;
g. and (3) data analysis, namely comprehensively analyzing the activation degree of the structure near each drill hole at different moments according to the change conditions of the resistivity and the polarizability shown by the drawn apparent resistivity-time curve and the apparent polarizability-time line graph, wherein the structure activation judgment standard is as follows:
(1) when the resistivity is reduced and the polarizability is increased, the geological structure is in an activated state and must contain water, and corresponding safety precaution measures are taken;
(2) when the resistivity is increased and the polarizability is increased, water may be contained in the geological structure and the geological structure may be in an activated state, and at the moment, the main precaution is needed, or corresponding measures are taken in combination with the field working condition;
(3) when the resistivity is reduced and the polarizability is reduced, water may be contained in the geological structure and the geological structure may be in an activated state, and at the moment, the main precaution is needed, or corresponding measures are taken in combination with the field working condition;
(4) when the resistivity is increased and the polarizability is reduced, the geological structure does not contain water, is not in an activated state, and is in a safe state;
h. comprehensively processing the apparent resistivity and apparent polarizability data of different drill holes: comprehensively analyzing the apparent resistivity and apparent polarizability data of different drill holes at the same moment, and processing by surf software to draw contour graphs of the apparent resistivity and the apparent polarizability near a certain moment structure;
i. and (3) determining a structural abnormal area: according to the apparent resistivity and apparent polarizability contour map of the drill hole and the structural activation judgment standard in the step g, the structural abnormal area and the structural stable area are defined;
j. configuration of the activation region determination: and comprehensively analyzing the apparent resistivity and apparent polarizability contour map of the drill hole, and defining a structural activation region.
After the fixed detection device is installed and sealed, the movable detection device can still serve as an independent detection device to averagely divide a drill hole into a plurality of detection points according to the depth, the step pitch of the detection points is 2-4 meters, and then an apparent resistivity-time curve and an apparent polarizability-distance curve can be established according to the steps d, e and f in sequence, so that whether a geological structure activation phenomenon exists in a cylindrical space detection range with the axis of the drill hole as the center and the radius of 20-30 meters can be obtained.
The following is a detailed description of the embodiments with reference to fig. 4 to 8.
Taking a certain coal mine working face as an example, during the mining process of the working face, the activation monitoring of the coal mine working face structure is further explained.
The method comprises the following steps: the method comprises the following steps of finely detecting adjacent regions in different distances around a working face crossheading, detecting the distribution condition, specific positions and specific ranges of specific geological structures near the working face, and finding out that the bottom plate of the working face has two fault geological structures, and the upper part of each fault is seen from a water-bearing layer and has stronger water-rich property;
step two: according to the fault structure distribution condition, drilling detection and arrangement are carried out, 2 drill holes are respectively arranged at the left fault, 4 drill holes are arranged at the fault with a larger right side range, as shown in the attached drawing 4, drilling is respectively carried out towards the positions near the fault at an inclination angle of 45 degrees, the drilling depth reaches the position 10-20 meters away from the edge of the fault, after the drill holes are cleaned up, a fixed detection device is arranged at the front end of the drill hole with the distance of 15-20 meters away from the geological structure and is connected with a data collection system arranged in a crossheading through a signal transmission line, a measuring electrode, a power supply electrode and a transmission line in the fixed detection device are all fixed on a distance measurement push rod, the fixed detection device is accurately arranged in the drill holes through the distance measurement push rod and is sealed by;
step three: switching on a power supply, measuring an electric field change signal through a fixed detection device arranged in a drill hole, simultaneously transmitting the electric field change signal to a data collection system through a signal transmission line, performing data collection once every half day when the data collection system is used for tunneling, and changing the data collection into data collection once every 20-30 minutes when a working face is used for stoping;
step four: the electric field change signals collected and stored by the data collection system are preprocessed and A/D converted into digital signals, the digital signals mainly comprise dual parameters of apparent resistivity and apparent polarizability in the geological structure,
step five: collecting apparent resistivity and apparent polarizability double parameters processed by a structural activation double-parameter monitoring system;
step six: and analyzing and processing the change conditions of the dual-parameter digital signals of the apparent resistivity and the apparent polarizability acquired and converted by the system, and constructing a change diagram of the relationship between the apparent resistivity and the apparent polarizability and the time, as shown in the attached figure 5.
Step seven: according to the structural activation judgment standards: the structures near the drill holes 5 and 6 are in an activated state, the structures near the drill holes 1 and 2 are in a stable state, and the drill holes 3 and 4 are in an abnormal area state, so that the deep analysis is carried out by combining other measures;
step eight: using surf software to draw contour lines of apparent resistivity and apparent polarizability data of different drill holes at the same time, and defining the range of a structural abnormal region and a structural stable region, as shown in FIGS. 6 and 7;
step nine: the apparent resistivity and apparent polarizability contour plots of the borehole were analyzed in combination to define formation activation zones, as shown in FIG. 8.
Parts not described in the above modes can be realized by adopting or referring to the prior art.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (6)
1. The utility model provides a structure activation double-parameter monitoring system, its includes geological detection system in earlier stage, drilling detection system, data collection system, data conversion system, data analysis system, data storage equipment and host computer, its characterized in that:
the drilling detection system comprises a drilling detection device and a related circuit, wherein the drilling detection device comprises a fixed detection device and a movable detection device, the fixed detection device comprises a guide probe, a measuring electrode and a power supply electrode, the measuring electrode is connected with a signal transmission device, and an electric field change signal received by the measuring electrode is transmitted through the signal transmission device; the mobile detection device carries out accurate signal detection at a step pitch of 2-4 meters along a measuring point in the drill hole after the fixed detection device is installed;
the data collection system is connected with the measuring electrode and is mainly used for collecting electric field change signals received by the measuring electrode, screening and collecting and storing after interference electric field signals are eliminated;
the data conversion system is used for converting the electric field change signals stored by the data collection system into digital signals through A/D in the host machine, and storing the digital signals into the data storage equipment in a mode of calculating dual parameters of apparent resistivity and apparent polarizability of a detection structure;
the data analysis system is used for drawing an apparent resistivity-time curve and an apparent polarizability-time curve by the digital signals converted by the data conversion system through a display screen of a host system or a derived digital signal source, and monitoring the structural activation state in real time by analyzing the change conditions of the resistivity and the polarizability.
2. A construct activation two parameter monitoring system according to claim 1, wherein: the related circuit comprises a signal transmission line and a power supply cable, the data collection system is connected with the measuring electrode through the signal transmission line, when the fixed detection device needs to be installed, the guide probe, the measuring electrode and the power supply electrode are jointly fixed on the distance measurement push rod, and the distance measurement push rod pushes the distance measurement push rod to a fixed position in the drill hole.
3. A construct activation two parameter monitoring system according to claim 2, wherein: the fixed detection device is arranged at the front end of a drill hole 10-15 meters away from the construction area, and the drill hole is sealed in a grouting mode after the fixed detection device is arranged.
4. A construct activation two parameter monitoring system according to claim 3, wherein: the hole diameter of the drill hole is larger than the diameter of the measuring electrode, and the ratio of the hole diameter of the drill hole to the diameter of the measuring electrode is 1.4-1.6: 1.
5. A method for monitoring a tectonic activation double parameter, characterized in that it uses a tectonic activation double parameter monitoring system according to any one of claims 1-4, said monitoring method comprising the following steps in sequence:
a. setting drilling parameters according to the structural characteristics and the positions;
b. performing on-site drilling operation, when a roadway is tunneled and a working face is stoped and propelled to be 15-20 m close to a geological structure, selecting 3-5 drilling observation points at intervals in a mining roadway and a goaf along the propelling width direction, and successively constructing drilling holes with a certain inclination angle in a top plate, a bottom plate and a coal rock wall of the roadway or the goaf, wherein the hole depth is determined according to the position and the range of the geological structure, and the general hole depth is 40-80 m;
c. after the drilling operation is ready, a drilling detection system is installed, firstly, construction drilling is cleaned, then, according to the drilling depth, the number of monitoring points of a movable detection device and the installation position of a fixed detection device are selected, the fixed detection device is installed at the front end of a drilling hole 15-20 meters away from a geological structure and is connected with a data collection system arranged in a crossheading through a signal transmission line, the signal transmission line and a power supply line are connected to the data collection system in a trenching and shallow burying mode, a measuring electrode, a power supply electrode and a transmission line in the fixed detection device are all fixed on a ranging push rod and are accurately placed in the drilling hole through the ranging push rod, grouting sealing is carried out, the fixed detection device is used as long-term detection and is sealed at the front end of the drilling hole;
d. starting a monitoring system, supplying power to the ground by using a power supply electrode, measuring an electric field change signal by using a well-arranged fixed detection device, enabling the measured electric field change signal to enter a data collection system through a signal transmission line, screening and filtering the collected signal by the data collection system, and collecting and storing the interference data after eliminating the interference data;
e. collecting data, namely collecting stored electric field signals by using the data collection system, converting the electric field signals into digital signals through preprocessing and A/D conversion, simultaneously outputting the digital signals to a data analysis system and storing the digital signals to data storage equipment, effectively establishing a mine structure monitoring database by using the system, and analyzing and researching by using big data, wherein the digital signals mainly comprise dual parameters of apparent resistivity and visual polarization rate in a detection structure;
f. data processing, namely analyzing and processing the change condition of the digital signal to construct a relation change diagram of apparent resistivity, apparent polarizability and time;
g. data analysis, namely comprehensively analyzing the activation degree of the structure near each drill hole at different moments according to the change conditions of the resistivity and the polarizability shown by the drawn apparent resistivity-time curve and the apparent polarizability-time line graph, and judging according to the structure activation judgment standard;
h. comprehensively processing the apparent resistivity and apparent polarizability data of different drill holes: comprehensively analyzing apparent resistivity and apparent polarizability data of different drill holes at the same moment, processing by surf software, and drawing contour graphs of the apparent resistivity and the apparent polarizability near a certain moment structure;
i. and (3) determining a structural abnormal area: according to the apparent resistivity and apparent polarizability contour map of the drill hole and the structural activation judgment standard in the step g, the structural abnormal area and the structural stable area are defined;
j. configuration of the activation region determination: and comprehensively analyzing the apparent resistivity and apparent polarizability contour map of the drill hole, and defining a structural activation region.
6. A method of two-parameter monitoring of tectonic activation as claimed in claim 5, wherein: the structural activation judgment standards in the step g are respectively as follows:
(1) when the resistivity is reduced and the polarizability is increased, the geological structure is in an activated state and must contain water, and corresponding safety precaution measures are taken;
(2) when the resistivity is increased and the polarizability is increased, water may be contained in the geological structure and the geological structure may be in an activated state, and at the moment, the main precaution is needed, or corresponding measures are taken in combination with the field working condition;
(3) when the resistivity is reduced and the polarizability is reduced, water may be contained in the geological structure and the geological structure may be in an activated state, and at the moment, the main precaution is needed, or corresponding measures are taken in combination with the field working condition;
(4) when the resistivity is increased and the polarizability is decreased, the geological structure is not activated and is in a safe state because water is not contained in the geological structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911402106.3A CN111077583B (en) | 2019-12-31 | 2019-12-31 | Structure activation double-parameter monitoring system and monitoring method |
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| CN117607973A (en) * | 2024-01-23 | 2024-02-27 | 山东科技大学 | Method for distinguishing space-time dynamic activation degree of collapse column |
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| CN114384593A (en) * | 2022-01-18 | 2022-04-22 | 中国地质科学院 | Distributed three-dimensional induced polarization data acquisition and processing device and method |
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