LU504006B1 - Interconnected microseismic monitoring system for mine water inrush disaster - Google Patents
Interconnected microseismic monitoring system for mine water inrush disaster Download PDFInfo
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- LU504006B1 LU504006B1 LU504006A LU504006A LU504006B1 LU 504006 B1 LU504006 B1 LU 504006B1 LU 504006 A LU504006 A LU 504006A LU 504006 A LU504006 A LU 504006A LU 504006 B1 LU504006 B1 LU 504006B1
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000004891 communication Methods 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 239000011435 rock Substances 0.000 claims description 12
- 230000009977 dual effect Effects 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 208000010392 Bone Fractures Diseases 0.000 description 4
- 206010017076 Fracture Diseases 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 208000013201 Stress fracture Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- -1 fire Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000001915 proofreading effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. analysis, for interpretation, for correction
- G01V1/288—Event detection in seismic signals, e.g. microseismics
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2200/00—Details of seismic or acoustic prospecting or detecting in general
- G01V2200/10—Miscellaneous details
- G01V2200/12—Clock synchronization-related issues
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/10—Aspects of acoustic signal generation or detection
- G01V2210/12—Signal generation
- G01V2210/123—Passive source, e.g. microseismics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
An interconnected microseismic monitoring system for mine water inrush disaster, which comprises: a mine monitoring center and an acquisition subsystem; there are multiple acquisition subsystems, which are connected in parallel to the mine monitoring center; and multiple acquisition subsystems are correspondingly arranged in multiple mines; and the acquisition subsystem comprises: a digital acquisition terminal, a mine acquisition substation, a communication adapter, a first clock synchronizer, a second clock synchronizer and a third clock synchronizer; the digital acquisition terminal is electrically connected to the mine acquisition substation through a field bus, and the mine acquisition substation is connected to the mine monitoring center through the communication adapter; the first clock synchronizer is connected to the digital acquisition terminal, the second clock synchronizer is connected to the mine acquisition substation, and the third clock synchronizer is connected to the mine monitoring center; wherein the digital acquisition terminal is connected in parallel to multiple different types of acquisition sensors, which are located at the microseism measurement points of the mine.
Description
BL-5661
LU504006
INTERCONNECTED MICROSEISMIC MONITORING SYSTEM FOR MINE
WATER INRUSH DISASTER
The present application relates to the technical field of mine safety, in particular relates to an interconnected microseismic monitoring system for mine water inrush disaster.
Background of the Invention “Water, fire, gas, dust and roof” disasters are five well-known disasters in the process of coal mining, wherein the water disaster is the result of the combined effects of coal mine engineering geological conditions, hydrogeological conditions, and human interference, and the mine water inrush accident is an important factor for restricting coal resource development.
Mine water inrush disaster inoculation needs real-time and long-term monitoring, however, the existing conventional monitoring method takes a single mine as a relatively independent working mode, microseism data processing is completed in the mine, the monitoring data 1s stored in an acquisition substation of each mine, and the acquisition substation terminal data is extracted through manual regular descending. Therefore, the real-time state of the mine cannot be timely and effectively reflected for data monitoring of the mine, and the safety risk of personnel is increased.
Therefore, it is urgent to provide a technical solution to the above shortcomings in the prior art.
The present application aims to provide an interconnected microseismic monitoring system for mine water inrush disaster, so as to solve or alleviate the problems existing in the prior art.
In order to achieve the above purpose, the present application provides the following technical scheme:
The present application provides an interconnected microseismic monitoring system for mine water inrush disaster, which comprises: a mine monitoring center and an acquisition subsystem; 1
BL-5661
LU504006 there are multiple acquisition subsystems, which are connected in parallel to the mine monitoring center; and multiple acquisition subsystems are correspondingly arranged in multiple mines; and the acquisition subsystem comprises: a digital acquisition terminal, a mine acquisition substation, a communication adapter, a first clock synchronizer, a second clock synchronizer and a third clock synchronizer; the digital acquisition terminal is electrically connected to the mine acquisition substation through a field bus, and the mine acquisition substation is connected to the mine monitoring center through the communication adapter; the first clock synchronizer is connected to the digital acquisition terminal, the second clock synchronizer is connected to the mine acquisition substation, and the third clock synchronizer is connected to the mine monitoring center; wherein the digital acquisition terminal is connected in parallel to multiple different types of acquisition sensors, which are located at the microseism measurement points of the mine.
Beneficial effect
In the interconnected microseismic monitoring system for mine water inrush disaster provided in the present application, multiple acquisition subsystems are connected in parallel to the mine monitoring center, and each acquisition subsystem corresponds to one mine; and each acquisition subsystem comprises: a digital acquisition terminal, a mine acquisition substation, a communication adapter, a first clock synchronizer, a second clock synchronizer and a third clock synchronizer; the digital acquisition terminal is electrically connected to the mine acquisition substation through a field bus, and the mine acquisition substation is connected to the mine monitoring center through the communication adapter; the first clock synchronizer is connected to the digital acquisition terminal, the second clock synchronizer is connected to the mine acquisition substation, and the third clock synchronizer is connected to the mine monitoring center; wherein the digital acquisition terminal is connected in parallel to multiple different types of acquisition sensors, which are located at the microseism measurement points of the mine.
Therefore, on one hand, by setting up a set of acquisition subsystem in each mine, the acquisition subsystems of each mine are connected in parallel to the mine monitoring center on the ground, and the acquisition data collected by the acquisition subsystem at the mine microseismic measurement points in each mine are summarized in real time to the mine monitoring center on the ground, so that the multiple mines become a whole, and microseism monitoring of the whole mine is achieved; and on the other hand, it avoids the manual periodic underground to extract data 2
BL-5661
LU504006 from the mine acquisition substation, which improves the real-time performance of data transmission and is conducive to timely responding to the mine water inrush disaster according to the monitoring data.
In addition, through the third clock synchronizer and the second clock synchronizer which are matched with the mine monitoring center and the mine acquisition substation, the clock synchronization between the mine monitoring center and each mine acquisition substation is achieved, the data time between the mines is determined to be accurate and consistent, and the quality of monitoring data between different mines is improved, through clock synchronization between the second clock synchronizer and the first clock synchronizer which are matched with the mine acquisition substation and the digital acquisition terminal, the monitoring data time of the acquisition sensors at different positions in the same mine is determined to be accurate and consistent, and the quality of monitoring data in the same mine is improved. Therefore, through the time calibration of the monitoring data between different mines and between the same mine, the dynamic and accurate prediction and judgment of the fracture of the mine microseism monitoring rock stratum or the development of the water guide channel are improved.
Fig. 1 is a schematic scene diagram of the interconnected microseismic monitoring technology for mine water inrush disaster;
Fig. 2 is a schematic structural diagram of the interconnected microseismic monitoring system for mine water inrush disaster;
Fig. 3 is a schematic diagram of connection between the digital acquisition terminal and the acquisition sensor;
Fig. 4 1s a circuit schematic diagram of the digital acquisition terminal.
At present, after various application geophysical methods are introduced into the field of mine water inrush disaster monitoring, the ability to capture the essential information of water mrush activities and perceive water inrush activities in remote areas has been effectively improved.
The microseismic monitoring can detect the three-dimensional space of rock mass micro fractures, 3
BL-5661
LU504006 and the detection result can well represent the formation, development, inoculation and evolution processes of rock mass damage and related disasters caused by it. Specifically, as an effective means for advanced detection of invisible faults, microseismic monitoring can detect and capture micro fracture signals generated by activation of invisible faults caused by disturbance 200 meters in advance, and give various information after the vibration.
When the microseism monitoring technology is adopted to monitor the mine water inrush disaster, it is necessary to conduct real-time and long-term monitoring of the occurrence of mine water inrush disasters., however, the existing monitoring method generally takes each mine as an independent working environment, microseismic data is processed in each mine, which makes it difficult to monitor the whole mine, and due to lack of real-time performance of monitoring data, the microseismic monitoring of mines is delayed and lagged, which greatly affects the accuracy of microseismic monitoring of mines.
Therefore, the applicant provides an interconnected microseismic monitoring system for mine water inrush disaster, by setting up a set of acquisition subsystem in each mine, and the acquisition subsystem of each mine is combined with the mine monitoring center (remote monitoring or cloud computing) on the ground through the existing communication network of the mine, so as to monitor the precursor information of the water guide channel formed by the fracture of the mine rock mass under the combined action of the mining stress and the water pressure, and upload it to the mine monitoring center for processing in real time; so as to determine the fracture scale and nature according to the earthquake source condition, and it has the advantages of no damage to the rock mass, low labor intensity and continuous time and space; furthermore, the advantages of fracture scale, strength and nature can be analyzed according to the source situation, which provides a basis for evaluating the hidden dangers of water inrush disasters within the scope.
As shown in Fig.1 to 4, the interconnected microseismic monitoring system for mine water mrush disaster comprises: a mine monitoring center and an acquisition subsystem; there are multiple acquisition subsystems, which are connected in parallel to the mine monitoring center; and multiple acquisition subsystems are correspondingly arranged in multiple mines; and the acquisition subsystem comprises: a digital acquisition terminal, a mine acquisition substation, a communication adapter, a first clock synchronizer, a second clock synchronizer and a third clock 4
BL-5661
LU504006 synchronizer; the digital acquisition terminal is electrically connected to the mine acquisition substation through a field bus, and the mine acquisition substation is connected to the mine monitoring center through the communication adapter; the mine acquisition substation receives an mstruction of the mine monitoring center, manages a digital acquisition terminal connected with the mine monitoring site, and sends the collected field data to the mine monitoring center; the first clock synchronizer is connected to the digital acquisition terminal, the second clock synchronizer is connected to the mine acquisition substation, and the third clock synchronizer is connected to the mine monitoring center; wherein the digital acquisition terminal is connected in parallel to multiple different types of acquisition sensors, which are located at the microseism measurement points of the mine.
In the example of the present application, the mine acquisition substation adopts the field bus to contact the digital acquisition terminal, and sends an instruction to the digital acquisition terminal, so that the acquisition sensor can start or stop data acquisition of the mine; moreover, the mine acquisition substation receives the acquisition signal fed back by the digital acquisition terminal and sends the acquisition signal to the mine monitoring center through the communication adapter. Specifically, the mine acquisition substation uses the existing communication network of the mine to transmit the data sent by the digital acquisition terminal to the ground mine monitoring center through the communication adapter.
Here, the mine monitoring center can adopt the form of the central main server or the cloud server. The mine monitoring center on the ground processes the collected data from multiple mines, and performs microseismic prediction of the mine according to the processing results.
Through the third clock synchronizer, the second clock synchronizer and the first clock synchronizer, which are matched with the mine monitoring center, the mine acquisition substation and the digital acquisition terminal, the clock synchronization of the data collected by the acquisition sensor is carried out, which effectively improves the clock synchronization accuracy of the data between different mines in the mine and between different microseismic measurement points in the same mine, and makes the prediction according to the collected data more accurate.
In the example of the present application, the field bus interface of the digital acquisition terminal with dual power supply and communication integration is connected in series with the acquisition sensor. That is to say, the digital acquisition terminal adopts dual power
BL-5661
LU504006 communication and power supply integrated field bus interface, for example, the P1 interface of the digital acquisition terminal is connected to the mine acquisition substation, and the P2 mterface 1s connected to the next digital acquisition terminal. Therefore, on the premise of ensuring real-time response and safety, multiple digital acquisition terminals can be connected in series to achieve flexible expansion of the digital acquisition terminal and effectively extend the microseismic measurement observation points of the mine, it should be noted that the P1 interface of the digital acquisition terminal can also be connected to other digital acquisition terminals, and the corresponding P2 interface is connected to the mine acquisition substation.
Furthermore, the P1 interface and the P2 interface of the digital acquisition terminal can also be connected to the external trigger signal, so as to realize the clock synchronization function of the multiple digital acquisition terminals. For example, by setting the acquisition parameters through the field bus, a pulse trigger signal is sent to the digital acquisition terminal for preparing collected data, and all the digital collection terminals are indicated to start data collection synchronously.
In the example of the present application, different types of acquisition sensors are embedded in the rock stratum with the hole depth range of [4, 20] m. Specifically, deep holes [4, 20] m are drilled in the determined rock stratum of the microseism measuring point, the acquisition sensor is embedded in the hole, and gypsum is adopted for filling, so that the acquisition sensor is tightly coupled with the rock stratum. Therefore, the interference of environmental factors in the data acquisition process is effectively eliminated, the data acquisition noise is reduced, and the data acquisition precision and accuracy are improved.
In the example of the present application, the acquisition sensor at least comprises one of a triaxial detector, a uniaxial detector, an attitude sensor and a mine pressure sensor. Furthermore, the triaxial detector, the uniaxial detector and the mine pressure sensor are respectively connected to the digital acquisition terminal through a low-pass filter, wherein an AD converter is arranged between the low-pass filter and the digital acquisition terminal.
Specifically, the central controller (an ADC chip (U4 chip)) of the digital acquisition terminal inputs signals from the AIN 0 to AIN 9 port, and the combination of AIN 0 to AIN 9 port and
AINCOM can collect 10 single-ended inputs, and pair-wise can input 5 differential input signals, such as, AIN 0 and AIN 1 are combined to input one path of differential signals and the like. Here, 6
BL-5661
LU504006 the ADC chip of the digital acquisition terminal is provided with the ADS CS as a high-level chip selection ADC chip, and ADC parameters are set through the ADS_ SCLK and the ADS DIN, such as sampling frequency, sampling channel, or sampling method.
The digital signal of the AD converter is connected to the digital acquisition terminal through an SPI interface, that is, ADS DRDY, ADS DOUT, ADS SCLK, ADS DIN, ADS CS and
ADS START pins of the ADC chip are connected to realize analog-to-digital conversion of data communication.
When ADS START in the digital acquisition terminal is at a high level, the ADC starts to convert data; and when ADS START in the digital acquisition terminal is at a low level, data conversion is stopped. If the ADC chip has the converted data, the ADS _DRDY signal is pulled up; and when the digital acquisition terminal detects the conversion completion signal, the conversion channel and the data completed by the AD converter are read through the ADS DOUT, the
ADS SCLK.
The digital acquisition terminal processes the data converted by the ADC and sends the data to the mine acquisition substation through the dual way field bus. For example, the field bus adopts a CAN bus communication interface, the mine acquisition substation is connected to the communication adapter chip (U2 chip) of the communication adapter through the P1 interface of the digital acquisition terminal and is connected to the digital acquisition terminal through CAN 0_TXD and CAN 0 _RXD, the digital acquisition terminal intelligently selects CAN 0 _TXD, the
CAN 0 RXD interface sends the acquired data to the mine acquisition substation, and the acquired data is sent to the mine monitoring center through the mine acquisition substation.
Similarly, if the mine acquisition branch is connected to the communication adapter chip (U3 chip) of the communication adapter through the P2 interface of the digital acquisition terminal, and connected to the digital acquisition terminal through CAN 1 _TXD and CAN 1 RXD, and the digital acquisition terminal intelligently selects the corresponding interface to send the converted data.
In a specific example, the triaxial detector is located in the horizontal borehole or the upperward inclined borehole of the microseismic measurement point, wherein the borehole inclination angle range of the upperward inclined borehole is [0°, 30°]. Therefore, the three-component microseismic analog signal is picked up through the triaxial detector and sent to 7
BL-5661
LU504006 the digital acquisition terminal, and the digital acquisition terminal converts the three-component microseismic analog signal into the digital signal and transmits the digital signal to the mine acquisition substation in real time.
In another specific example, the uniaxial detector is located in the downward inclined borehole of the microseismic measurement point, wherein the borehole inclination angle range of the downward inclined borehole is [-15°, -30°]. Therefore, the single-component microseismic analog signal is picked up through the uniaxial detector and sent to the digital acquisition terminal, and the digital acquisition terminal converts the single-component microseismic analog signal into the digital signal and transmits the digital signal to the mine acquisition substation in real time.
In another specific example, attitude data such as the inclination angle and the azimuth angle of the digital acquisition terminal are collected through the attitude sensor and sent to the digital acquisition terminal in real time, and the digital acquisition terminal sends the attitude data to the mine acquisition substation in real time.
In some optional embodiments, the mine monitoring center sends timing pulses to the mine acquisition substation according to a preset time interval; and the mine acquisition substation periodically reads timestamp information of the second clock synchronizer and sends the timestamp information to the digital acquisition terminal. Furthermore, the range of the preset time interval is [1, 10] seconds.
Here, by sending the timing pulse to the second clock synchronizer and the third clock synchronizer, the second clock synchronizer and the third clock synchronizer are synchronized to improve the time accuracy of data acquisition between different mines. The mine acquisition substation periodically reads timestamp information of the second clock synchronizer and sends it to the digital acquisition terminal, and the digital acquisition terminal performs clock proofreading on the first clock synchronizer according to the timestamp information of the second clock synchronizer, so that the time precision of data acquisition in the same mine is improved.
In the example of the present application, the clock synchronization between the mine monitoring center and the mine acquisition substation can adopt wireless mode or wired mode, for example, GPS timing can be used to synchronize the clock between the mine monitoring center and the mine acquisition substation, or manually synchronize the clock between the mine monitoring center and the mine acquisition substation. Clock synchronization is realized between 8
BL-5661
LU504006 the mine acquisition substation and the digital acquisition terminal through the wired connection mode, namely the field bus mode.
According to example of the present application, by setting a set of acquisition subsystem in each mine, the acquisition subsystems of each mine are connected in parallel to the mine monitoring center on the ground, and the acquisition data acquired by the acquisition subsystem at the mine microseismic measurement points in each mine are summarized in real time to the mine monitoring center on the ground, so that the multiple mines become a whole, and microseism monitoring of the whole mine is achieved; it avoids the manual periodic underground to extract data from the mine acquisition substation, which improves the real-time performance of data transmission, avoids data information omissions, misjudgments, and greatly improves the reliability of microseismic monitoring of mines.
When the interconnected microseismic monitoring system for mine water inrush disaster is used for microseismic monitoring, firstly, according to geological conditions and mining conditions of the mine area to be monitored, determine the layout scheme of the monitoring system, for example, the number of the layout acquisition subsystems. Then, drill holes in the rock stratum at the determined microseismic measuring points, bury uniaxial detectors, triaxial detectors and digital acquisition terminals, erect mine acquisition substations, communication adapters, and connect to the mine communication network, complete the layout of the acquisition subsystem, ensure that each work unit works properly, and set the acquisition parameters for each digital acquisition terminal.
By conducting the vertex blasting test in the roadway of the mine,, the rock stratum seismic wave velocity of the microseism measurement point 1s collected, the rock mass burst vibration wave energy 1s picked up, the collected data is sent to the mine acquisition substation in real time, and the collected data is sent to the mine monitoring center in real time through the mine acquisition substation. In the process, the clock synchronizer of the mine monitoring center and the clock interval [1, 10] seconds of the mine acquisition substation are subjected to consistency calibration through the sent synchronous pulses. Therefore, the Internet is used to connect the acquisition subsystem among multiple mines, real-time monitoring, processing, analysis and warning of water inrush disaster that may occur in multiple mines. 9
Claims (9)
1. An interconnected microseismic monitoring system for mine water inrush disaster, characterized by comprising: a mine monitoring center and an acquisition subsystem; there are multiple acquisition subsystems, which are connected in parallel to the mine monitoring center; and multiple acquisition subsystems are correspondingly arranged in multiple mines; and the acquisition subsystem comprises: a digital acquisition terminal, a mine acquisition substation, a communication adapter, a first clock synchronizer, a second clock synchronizer and a third clock synchronizer; the digital acquisition terminal is electrically connected to the mine acquisition substation through a field bus, and the mine acquisition substation is connected to the mine monitoring center through the communication adapter; the first clock synchronizer is connected to the digital acquisition terminal, the second clock synchronizer is connected to the mine acquisition substation, and the third clock synchronizer is connected to the mine monitoring center; wherein the digital acquisition terminal is connected in parallel to multiple different types of acquisition sensors, which are located at the microseism measurement points of the mine.
2. The interconnected microseismic monitoring system for mine water inrush disaster according to claim 1, characterized in that the field bus interface of the digital acquisition terminal with dual power supply and communication integration is connected in series with the acquisition sensor arranged at the microseismic measurement point.
3. The interconnected microseismic monitoring system for mine water inrush disaster according to claim 1, characterized in that the acquisition sensor is embedded in a rock stratum with a hole depth range of [4, 20] m and is connected to the digital acquisition terminal located outside the hole.
4. The interconnected microseismic monitoring system for mine water inrush disaster according to claim 1, characterized in that the acquisition sensor at least comprises one of a triaxial detector, a uniaxial detector, an attitude sensor and a mine pressure sensor.
BL-5661 LU504006
5. The interconnected microseismic monitoring system for mine water inrush disaster according to claim 4, characterized in that the triaxial detector, the uniaxial detector and the mine pressure sensor are respectively connected to the digital acquisition terminal through a low-pass filter, wherein an AD converter is arranged between the low-pass filter and the digital acquisition terminal.
6. The interconnected microseismic monitoring system for mine water inrush disaster according to claim 4, characterized in that the triaxial detector is located in a horizontal borehole or an upperward inclined borehole of the microseismic measurement point, wherein the borehole inclination angle range of the upperward inclined borehole is [0°, 30°].
7. The interconnected microseismic monitoring system for mine water inrush disaster according to claim 4, characterized in that the uniaxial detector is located in a downward inclined holehole of the microseismic measurement point, wherein the borehole inclination angle range of the downward inclined borehole is [-15°,-30° |.
8. The interconnected microseismic monitoring system for mine water inrush disaster according to any one of claims 1 to 7, characterized in that the mine monitoring center sends timing pulses to the mine acquisition substation according to a preset time interval; and the mine acquisition substation periodically reads timestamp information of the second clock synchronizer and sends the timestamp information to the digital acquisition terminal.
9. The interconnected microseismic monitoring system for mine water inrush disaster according to claim 8, characterized in that the range of the preset time interval is [1, 10] seconds. 11
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220736341.5U CN217305563U (en) | 2022-03-30 | 2022-03-30 | Interconnected mine water inrush disaster micro-earthquake monitoring system |
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| LU504006B1 true LU504006B1 (en) | 2023-10-02 |
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| LU504006A LU504006B1 (en) | 2022-03-30 | 2022-11-21 | Interconnected microseismic monitoring system for mine water inrush disaster |
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| Country | Link |
|---|---|
| CN (1) | CN217305563U (en) |
| LU (1) | LU504006B1 (en) |
| WO (1) | WO2023061513A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN217305563U (en) * | 2022-03-30 | 2022-08-26 | 河南省许昌新龙矿业有限责任公司 | Interconnected mine water inrush disaster micro-earthquake monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8605544B1 (en) * | 2012-10-05 | 2013-12-10 | Esg Solutions Inc. | Hybrid seismic sensor network |
| CN204716292U (en) * | 2015-04-16 | 2015-10-21 | 河北煤炭科学研究院 | Based on the forward type down-hole microseism data acquisition system of Internet of Things |
| CN106569255A (en) * | 2016-11-14 | 2017-04-19 | 中国矿业大学 | Wireless transmission-based coal mine stope earthquake source monitoring and locating system |
| CN108693553A (en) * | 2017-04-06 | 2018-10-23 | 河南理工大学 | System is monitored based on the mine microquake of internet and supercomputer |
| CN111123372B (en) * | 2019-12-24 | 2020-11-17 | 中国矿业大学(北京) | Coal mine floor drilling induced polarization method water inrush monitoring and forecasting system and method |
| CN111064540A (en) * | 2019-12-31 | 2020-04-24 | 河南理工大学 | Mine micro-earthquake monitoring clock synchronization device and method |
| CN217305563U (en) * | 2022-03-30 | 2022-08-26 | 河南省许昌新龙矿业有限责任公司 | Interconnected mine water inrush disaster micro-earthquake monitoring system |
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- 2022-03-30 CN CN202220736341.5U patent/CN217305563U/en active Active
- 2022-11-21 LU LU504006A patent/LU504006B1/en active IP Right Grant
- 2022-11-21 WO PCT/CN2022/133250 patent/WO2023061513A1/en unknown
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| CN217305563U (en) | 2022-08-26 |
| WO2023061513A1 (en) | 2023-04-20 |
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