CN217080567U - Mine earthquake comprehensive monitoring system - Google Patents
Mine earthquake comprehensive monitoring system Download PDFInfo
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- CN217080567U CN217080567U CN202220682596.8U CN202220682596U CN217080567U CN 217080567 U CN217080567 U CN 217080567U CN 202220682596 U CN202220682596 U CN 202220682596U CN 217080567 U CN217080567 U CN 217080567U
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Abstract
The utility model relates to a mine earthquake integrated monitoring system. The existing mining micro-seismic monitoring system adopts a single-frequency-band detector, and the accuracy is not high. Therefore, the mine earthquake comprehensive monitoring system comprises a ground monitoring computer and a plurality of detectors, wherein the detectors comprise a plurality of high-frequency detectors, a plurality of medium-low frequency detectors and a plurality of medium-high frequency detectors, and the high-frequency detectors are uniformly arranged in a driving roadway; the medium and low frequency detectors are uniformly arranged at all positions of the mine roadway; the medium-high frequency detectors are uniformly arranged in a track lane and a belt lane of the stope face. The utility model discloses ore deposit shakes integrated monitoring system selects different ore deposit to shake the sensor for different underground environment scientifically, full play characteristics, the advantage of the wave detector of different frequency channels, the data of multiple wave detector response simultaneously summarize on same ground monitoring computer, the data of being convenient for are compared, synthesize and judge ore deposit and shake the harm.
Description
Technical Field
The utility model relates to a mine earthquake integrated monitoring system.
Background
With the continuous reduction of shallow coal resources in China, a large number of mines gradually enter a deep mining stage, and mine earthquake and rock burst have increasingly prominent harm to underground and ground surfaces of the coal mines, so that the method becomes one of key problems in coal mine production in parts of China. Mine shakes of different degrees that accompany in the mine exploitation process not only can induce underground rock burst, bring serious influence for safe mining to some strong mine shakes also can cause the strong sense of earthquake on ground and the rocking harm of building, bring extremely panic for near resident. Therefore, mine earthquake monitoring in the mine mining process needs to be continuously enhanced, a monitoring area is enlarged, a monitoring vibration frequency range is increased, and the influence range of strong mine earthquake or rock burst on ground buildings (structures) is evaluated, so that early warning is performed.
The mine earthquake monitoring technology is mainly characterized in that a detector is used for collecting a vibration signal generated in the coal and rock body breaking process, the space position and the energy level of a seismic source are obtained through analysis and processing, and potential dynamic disasters possibly generated by mine earthquake on ground buildings (structures) are judged according to the strength and the frequency of a mine earthquake event, so that early warning is performed. However, the existing mine earthquake monitoring systems, such as a ground sound monitoring system and a micro-earthquake monitoring system, have single frequency band of the detector, and the acquired data is only processed in a single system, and is not subjected to joint analysis, so that the coverage range is small, the monitoring precision is low, and the vibration damage possibly suffered by the ground cannot be timely and effectively evaluated. For example, in the patent of 'a mining microseismic monitoring method' publication No. CN105785436A, the monitoring capability is improved by dynamically adjusting the position of a detector or increasing the installation mode of the detector, the frequency band of the detector is not considered, and only a single monitoring system is used; the patent 'a mining micro-seismic monitoring system' publication No. CN110454229A, which carries out micro-seismic monitoring by changing the type of a sensor, is still a single monitoring system and does not relate to the frequency band of a detector; in the patent of 'a system and a method for monitoring micro-seismic underground combined', publication No. CN110703320A, the positioning accuracy is improved by adding an underground micro-seismic monitoring system, and double-system combined analysis is carried out without considering the frequency band of a detector.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is how to fill the above-mentioned blank of prior art, provide a mine shake integrated monitoring system.
For solving the technical problem, the utility model discloses mine earthquake integrated monitoring system, including ground monitoring computer and a plurality of wave detector, above-mentioned wave detector sets up respectively in the track lane and the belt lane of the tunnelling tunnel, the big lane of mine, the working face of stoping of adapted mine to link to each other its characterized in that with ground monitoring computer through looped netowrk switch and optic fibre: the geophone comprises a plurality of high-frequency geophones, a plurality of medium-low frequency geophones and a plurality of medium-high frequency geophones, the high-frequency geophones are uniformly arranged in a driving roadway, are connected with a geophone monitoring substation and are connected with a looped network switch through the geophone monitoring substation, and the high-frequency geophones and the geophone monitoring substation form a geophone monitoring subsystem;
the medium and low frequency detectors are uniformly arranged at each position of a mine main roadway, are provided with a main roadway micro-seismic monitoring substation and a main roadway micro-seismic monitoring station, and are connected with a ring network switch through the main roadway micro-seismic monitoring substation and the main roadway micro-seismic monitoring station, and the medium and low frequency detectors, the main roadway micro-seismic monitoring substation and the main roadway micro-seismic monitoring station form a mine main roadway micro-seismic monitoring subsystem;
the medium-high frequency detectors are uniformly arranged in a track roadway and a belt roadway of the stope face, are connected with a micro-seismic monitoring substation and are connected with the ring network switch through the micro-seismic monitoring substation, and the medium-high frequency detectors and the micro-seismic monitoring substation form a stope face micro-seismic monitoring subsystem.
The utility model discloses the people finds through long-term research, practice: the surrounding of the excavation roadway is mostly a solid coal seam, which is convenient for high-frequency ground sound transmission, so that the high-frequency detector is selected more sensitively and accurately; the mine main roadway is far away from the goaf and the mine earthquake focus, and only the mine earthquake signals with medium and low frequency and large energy are easily monitored, so that the medium and low frequency detector is selected, and the monitoring is more sensitive; the track roadway and the belt roadway of the stope face are close to the goaf and the mine earthquake focus, and a medium-high frequency detector is selected to be more suitable.
So designed, the utility model discloses scientifically select different ore deposit for the environment in the pit of difference and shake the sensor, full play characteristics, the advantage of the wave detector of different frequency channels, the data of multiple wave detector response simultaneously summarize on same ground monitoring computer, the data of being convenient for are compared, synthesize and judge the ore deposit and shake the harm.
And the multi-frequency detectors are respectively arranged on the ground surface of the matched mine, and are connected with the ground monitoring computer to form a ground micro-seismic monitoring subsystem. By the design, the mine earthquake intensity and influence transmitted to the earth surface can be monitored conveniently and directly.
Preferably, the multi-frequency detector comprises a plurality of detectors with different frequency bands, and the detectors are respectively buried in surface holes which are different in depth and are arranged in the whole mining range of the mine. By the design, all vibration events in the mine mining process can be monitored conveniently.
Preferably, the high-frequency detector is composed of a high-frequency detector with a frequency range of 60-2000 Hz. By the design, high-frequency and low-energy vibration events can be monitored continuously, and monitoring data are transmitted to the ground sound monitoring substation.
Preferably, the medium-low frequency detector is composed of a medium-low frequency detector with a frequency range of 0.1-150 Hz. By the design, low-frequency and large-energy vibration events transmitted to the mine roadway can be monitored conveniently, and monitoring data are transmitted to the mine roadway micro-seismic monitoring subsystem.
Preferably, the medium-high frequency detector is composed of a medium-high frequency detector with a frequency range of 4.5-800 Hz. The design is convenient for continuously monitoring medium-high frequency and medium-high energy vibration events and transmitting the monitoring data to the microseismic monitoring subsystem of the stope face.
And as optimization, the ground sound monitoring subsystem, the mine roadway micro-seismic monitoring subsystem, the stope face micro-seismic monitoring subsystem and the ground micro-seismic monitoring subsystem are provided with time synchronization devices and have the same clock. By the design, the mine earthquake damage can be comprehensively judged by conveniently comparing mine earthquake data sensed by the ground monitoring computer and the ground sound monitoring subsystem, the mine roadway micro-earthquake monitoring subsystem, the stope working face micro-earthquake monitoring subsystem and the ground micro-earthquake monitoring subsystem.
The method for estimating the mineral earthquake damage range by utilizing the monitoring data of the mineral earthquake comprehensive monitoring system comprises the following steps:
firstly, selecting the ore earthquake comprehensive monitoring system to monitor the ore earthquake monitoring data with large energy at a certain time, and calculating the longitude and latitude coordinates and the earthquake source depth of the ore earthquake according to a conventional method;
estimating the radius range of the ground vibration damage boundary according to the following formula:
in the formula, eta is the seismic wave kinetic energy conversion coefficient and is 0-1; rho is the average density of ground particle units, and the unit is kg/m 3; vm is the safety or limit vibration speed of the ground particle unit in mm/s; u is the elastic energy released by breaking the key layer monitored in the ground monitoring server, and is unit J; λ is the attenuation coefficient associated with the formation medium, etc.; h1 is the critical layer thickness, in m; h2 is the distance between the key layer and the earth surface, unit m, vm is less than 5mm/s when the mine earthquake has no earthquake feeling to the ground building (structure); when the mine earthquake feels earthquake to the ground building (structure), vm is more than or equal to 5mm/s and less than 30 mm/s; when the mine earthquake damages the ground building (structure), vm is more than or equal to 30mm/S, and the obtained S value is the radius of the ground earthquake damage boundary, and the unit is m.
By the design, the ground vibration damage boundary of the mine earthquake can be conveniently calculated, and the ground vibration damage boundary of the larger mine earthquake which possibly occurs in the future can be calculated, so that the ground is guided to be prevented in advance.
The utility model discloses be connected to the mine earthquake monitoring of the wide area wide band in the same ground monitoring server realization mining area overall range with the many sets of monitoring system that different frequency detectors are constituteed, can overcome local area and arrange the limitation problem that the fixed frequency detector carries out the mine earthquake monitoring, improve the monitoring precision of the different regional mine earthquake incident of mine, the vibrations influence range that the accurate aassessment mine earthquake brought ground satisfies the demand that the mine monitoring mine earthquake takes place.
The utility model discloses ore deposit shakes integrated monitoring system selects different ore deposit to shake the sensor for different underground environment scientifically, full play characteristics, the advantage of the wave detector of different frequency channels, the data of multiple wave detector response simultaneously summarize on same ground monitoring computer, the data of being convenient for are compared, synthesize and judge ore deposit and shake the harm.
Drawings
The utility model discloses ore deposit shakes integrated monitoring system is right below with the accompanying drawing, do further explanation:
fig. 1 is the utility model discloses the three-dimensional structure schematic diagram of ore deposit shake integrated monitoring system.
Fig. 2 is a schematic cross-sectional structure of a local formation cut along a longitudinal vertical bisection plane of the stope face.
In the figure: 1-ground monitoring computer, 2-driving tunnel, 3-mine tunnel, 4-stope face, 5-high frequency detector, 6-medium and low frequency detector, 7-medium and high frequency detector, 8-ground sound monitoring substation, 9-tunnel microseism monitoring substation, 10-tunnel microseism monitoring main station, 11-microseism monitoring substation, 12-multifrequency detector and 13-earth surface; 14-looped network/optical fiber, 15-vibration damage boundary, 16-vibration sensing boundary; 17-no-seismic boundary, 18-key layer, 19-coal layer; 20-a goaf;
o-seismic source; p-epicenter; s, the radius of the ground vibration damage boundary; r-spatial distance of seismic source propagation; h1 — critical layer thickness; h 2-distance of key layer from earth's surface; h3 — distance of key layer from coal seam; h, the distance between the coal bed and the ground surface.
Detailed Description
The first implementation mode comprises the following steps: as shown in fig. 1-2, the mine earthquake integrated monitoring system comprises a ground monitoring computer 1 and a plurality of detectors, wherein the detectors are respectively arranged in a tunneling roadway 2, a mine roadway 3 and a stope face 4 of a matched mine, and are connected with the ground monitoring computer 1 through a looped network switch and optical fibers, and the mine earthquake integrated monitoring system is characterized in that: the detector comprises a plurality of high frequency detectors 5, a plurality of medium and low frequency detectors 6 and a plurality of medium and high frequency detectors 7,
the high-frequency detectors 5 are uniformly arranged in the excavation roadway 2, are connected with a ground sound monitoring substation 8 and are connected with the ring network switch through the ground sound monitoring substation 8, and the high-frequency detectors 5 and the ground sound monitoring substation 8 form a ground sound monitoring subsystem;
the medium and low frequency detectors 6 are uniformly arranged at each position of a mine main roadway 3, are provided with a main roadway micro-seismic monitoring substation 9 and a main roadway micro-seismic monitoring station 10, and are connected with a ring network switch through the main roadway micro-seismic monitoring substation 9 and the main roadway micro-seismic monitoring station 10, and the medium and low frequency detectors 6, the main roadway micro-seismic monitoring substation 9 and the main roadway micro-seismic monitoring station 10 form a mine main roadway micro-seismic monitoring subsystem;
the medium-high frequency detectors 7 are uniformly arranged in a track roadway and a belt roadway of the stope face 4, are connected with a micro-seismic monitoring substation 11 and are connected with a ring network switch through the micro-seismic monitoring substation 11, and the medium-high frequency detectors 7 and the micro-seismic monitoring substation 11 form a stope face micro-seismic monitoring subsystem.
The mine earthquake comprehensive monitoring system also comprises a plurality of multi-frequency detectors 12, wherein the multi-frequency detectors 12 are respectively arranged on the ground surface of a matched mine, and the multi-frequency detectors 12 are all connected with a ground monitoring computer to form a ground micro-earthquake monitoring subsystem. The multifrequency detector 12 comprises a plurality of detectors with different frequency bands, and the detectors are respectively buried in surface holes with different depths and arranged in the whole mining range of a mine. The high-frequency detector 5 is composed of a high-frequency detector with a frequency range of 60-2000 Hz. The medium-high frequency detector 7 is composed of a medium-high frequency detector with a frequency band of 4.5-800 Hz. The medium and low frequency detector 6 is composed of a medium and low frequency detector with a frequency range of 0.1-150 Hz. The earthquake sound monitoring subsystem, the mine roadway microseismic monitoring subsystem, the stope face microseismic monitoring subsystem and the ground microseismic monitoring subsystem are provided with time synchronization devices (refer to the time synchronization device for the mine microseismic monitoring system in CN 205644073U) and have the same clock.
The method for estimating the mineral earthquake damage range by utilizing the monitoring data of the mineral earthquake comprehensive monitoring system comprises the following steps:
firstly, selecting the ore earthquake comprehensive monitoring system to monitor the ore earthquake monitoring data with large energy at a certain time, and calculating the longitude and latitude coordinates and the earthquake source depth of the ore earthquake according to a conventional method;
estimating the radius range of the ground vibration damage boundary according to the following formula:
in the formula, eta is the seismic wave kinetic energy conversion coefficient and is 0-1; rho is the average density of ground mass point units, and the unit is kg/m 3; vm is the safety or limit vibration speed of the ground particle unit in mm/s; u is the elastic energy released by breaking the key layer monitored in the ground monitoring server, and is unit J; λ is an attenuation coefficient related to a formation medium and the like; h1 is the critical layer thickness, in m; h2 is the distance between the key layer and the earth surface, unit m, vm is less than 5mm/s when the mine earthquake has no earthquake feeling to the ground building (structure); when the mine earthquake feels earthquake to the ground building (structure), vm is more than or equal to 5mm/s and less than 30 mm/s; when the mine earthquake damages the ground building (structure), vm is more than or equal to 30mm/S, and the obtained S value is the radius of the ground earthquake damage boundary, and the unit is m.
Furthermore, the monitoring data of the earthquake sound monitoring system, the microseismic monitoring system and the whole mine microseismic monitoring system are firstly transmitted to the underground microseismic monitoring master station 12 together and then transmitted to the ground monitoring server 14 through the looped network/optical fiber 13; the monitoring data of the ground microseismic monitoring system is directly transmitted to the same ground monitoring server 14 through a wireless or communication cable.
Furthermore, the monitoring server 14 performs combined comparison, analysis and positioning on the same vibration event monitored by the multiple systems at the same time, so as to realize wide-area broadband mine vibration monitoring in the whole range of the mine area.
Further, the monitor server 14 compares and analyzes the obtained seismic source O and the obtained vibration energy U, where the thickness h1 of the main key layer where the seismic source O is located is 263m, the average buried depth h2 is 326.5m, the vibration energy U is 1.45 × 107J, and the parameters are substituted into the formula according to the formula that the seismic wave kinetic energy conversion coefficient η =1%, the rock stratum medium ρ is 25kN/m3, and the attenuation coefficient λ is 1.5
The damage boundary 16 of the available ground (structure) building is 524m, the vibration sensing boundary 17 is 7573m, and the non-vibration sensing boundary 18 is greater than 7573 m. Table 1 shows the theoretical reference of the range of the mineral earthquake influence plane of different energies.
TABLE 1
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a mine earthquake integrated monitoring system, includes ground monitoring computer and a plurality of wave detector, above-mentioned wave detector sets up respectively in the tunnelling tunnel of adapted mine, the big lane of mine, the track lane and the belt lane of stope face to link to each other its characterized in that with ground monitoring computer through looped netowrk switch and optic fibre: the detector comprises a plurality of high-frequency detectors, a plurality of medium-low frequency detectors and a plurality of medium-high frequency detectors,
the high-frequency detectors are uniformly arranged in the tunneling roadway, are connected with a ground sound monitoring substation and are connected with the ring network switch through the ground sound monitoring substation, and the high-frequency detectors and the ground sound monitoring substation form a ground sound monitoring subsystem;
the medium-low frequency detectors are uniformly arranged at all positions of a mine roadway and are provided with a roadway micro-seismic monitoring substation and a roadway micro-seismic monitoring main station, the roadway micro-seismic monitoring substation and the roadway micro-seismic monitoring main station are connected with a ring network switch, and the medium-low frequency detectors, the roadway micro-seismic monitoring substation and the roadway micro-seismic monitoring main station form a mine roadway micro-seismic monitoring subsystem;
the medium-high frequency detectors are uniformly arranged in a track roadway and a belt roadway of the stope face, are connected with a micro-seismic monitoring substation and are connected with the ring network switch through the micro-seismic monitoring substation, and the medium-high frequency detectors and the micro-seismic monitoring substation form a stope face micro-seismic monitoring subsystem.
2. The mineral earthquake integrated monitoring system according to claim 1, characterized in that: the system also comprises a plurality of multi-frequency detectors which are respectively arranged on the ground surface of the matched mine, and the multi-frequency detectors are connected with a ground monitoring computer to form a ground micro-seismic monitoring subsystem.
3. The mineral earthquake integrated monitoring system according to claim 2, characterized in that: the multi-frequency detector comprises a plurality of detectors with different frequency bands, and the detectors are respectively buried in surface holes which are different in depth and are arranged in the whole mining range of a mine.
4. The mineral earthquake integrated monitoring system according to claim 1, characterized in that: the high-frequency detector is composed of a high-frequency detector with a frequency range of 60-2000 Hz.
5. The mineral earthquake integrated monitoring system according to claim 1, characterized in that: the medium and low frequency detector is composed of a medium and low frequency detector with a frequency range of 0.1-150 Hz.
6. The mineral earthquake integrated monitoring system according to claim 1, characterized in that: the medium-high frequency detector is composed of a medium-high frequency detector with a frequency band of 4.5-800 Hz.
7. The mineral earthquake integrated monitoring system according to claim 2, characterized in that: the earthquake sound monitoring subsystem, the mine roadway micro-seismic monitoring subsystem, the stope face micro-seismic monitoring subsystem and the ground micro-seismic monitoring subsystem are provided with time synchronization devices.
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