CN205714288U - The dynamic disaster early warning system of via hole monitoring is ruptured based on roadway surrounding rock - Google Patents
The dynamic disaster early warning system of via hole monitoring is ruptured based on roadway surrounding rock Download PDFInfo
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- CN205714288U CN205714288U CN201620361927.2U CN201620361927U CN205714288U CN 205714288 U CN205714288 U CN 205714288U CN 201620361927 U CN201620361927 U CN 201620361927U CN 205714288 U CN205714288 U CN 205714288U
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Abstract
This utility model provides a kind of dynamic disaster early warning system rupturing via hole monitoring based on roadway surrounding rock, belongs to mining engineering, the monitoring of Geotechnical Engineering dynamic disaster and early warning technology field.This system includes that acoustic emission Real-time Collection monitors system, monitoring holes, via hole, the country rock rupture process bred in evolutionary process by bump by laying via hole is revealed in via hole periphery, by laying monitoring holes and sensor being installed in monitoring holes, directly monitor via hole hole wall country rock micro rupture state by acoustic emission Real-time Collection monitoring system, dynamic disaster is monitored in real time.This utility model overcomes drilling cuttings method (for coal mine rock burst early warning) complex operation, can not monitor in real time and acoustic-emission useful signal is weak, noise jamming causes by force monitoring result to owe defect accurately, improves mining engineering, the safety of Geotechnical Engineering dynamic disaster monitoring and effectiveness.
Description
Technical field
This utility model relates to mining engineering, the monitoring of Geotechnical Engineering dynamic disaster and early warning technology field, particularly relates to a kind of dynamic disaster early warning system rupturing via hole monitoring based on roadway surrounding rock.
Background technology
In dynamic disaster (coal mine rock burst, hard rock rock burst etc.) monitoring and warning field, for coal mine rock burst, forecast when participating in the cintest the most both domestic and external is main based on drilling cuttings method, is only that the warning index used by each mine is different.Coal powder quantity of bore is the reflection of rock masses fracturing state in drilling cuttings hole, is the aggregative indicator comprising the factors such as mining induced stress, coal properties, prominent environment.
The outstanding advantages of drilling cuttings method is the reliability of its practicality and method, its prominent shortcoming is the complexity of operating process in implementation process, the operating error varied with each individual and can not monitor continuously and real-time early warning, thus causes useful information to be omitted and occur to carry out early warning to pressing with impacting accurately and efficiently.
The methods such as the country rock near field the most commonly used acoustic emission of state of rupture of coal and rock and hard rock rock mass are monitored, acoustic emission monitor(ing) is the important technical in brittle rock mass dynamic disaster monitoring and warning, directly reflection rock rupture state, the most accurately, and be capable of monitoring in real time, give warning in advance.
Dou Lin distinguished professor is equal within 2011, having delivered " the sound emission monitoring technology research of impulsion pressure " paper in " rock-soil mechanics ", discuss the feasibility utilizing Acoustic Emission Evaluation Hazards of Rock Burst, it is proposed that the expression way of acoustic emission index, the determination of critical indicator and the division etc. of danger classes that Hazards of Rock Burst is evaluated.Peng Qi is equal within 2009, having delivered " based on AE seasonal effect in time series model for predicting rock burst " paper in " rock-soil mechanics ", according to acoustic emission (AE) seasonal effect in time series feature in on-the-spot rock-burst monitoring, use wavelet neural network and catastrophe theory, establish a kind of new model for predicting rock burst.
The outstanding advantages of acoustic emission monitor(ing) method is the most accurately, can monitor in real time, its prominent shortcoming is that destruction signals intensity is weak, sensor is serious by noise jamming simultaneously, causes that acoustic emission signal data inversion analysis result owes reliable, acoustic emission useful signal extracts mistake, acoustic emission is sentenced the series of problems such as knowledge method inefficacy and happened occasionally.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of dynamic disaster early warning system rupturing via hole monitoring based on roadway surrounding rock, in conjunction with drilling cuttings method early warning ultimate principle and acoustic emission monitor(ing) means, and overcome the deficiency of the two, the roadway surrounding rock rupture process bred by dynamic disaster in evolutionary process is revealed in via hole periphery, directly monitoring via hole hole wall country rock micro rupture state, and by the way of being installed in monitoring holes by sensor, reduce useful signal decay and construction noise interference.
This system includes acoustic emission Real-time Collection monitoring system, via hole, monitoring holes and acoustic emission sensor.Wherein, acoustic emission Real-time Collection monitoring system includes monitoring main frame, data transmission system, power supply, Acquisition Instrument, rosette, rosette is connected between acoustic emission sensor and Acquisition Instrument, power supply is powered to Acquisition Instrument by supply lines, the signal that acoustic emission sensor receives transmits to monitoring main frame through data transmission system with holding wire transmission to Acquisition Instrument, the signal that Acquisition Instrument is collected through rosette again.Monitoring main frame is used for processing, showing Real-time Monitoring Data, according to threshold value crucial set in advance, shows the probability that dynamic disaster occurs continuously, intuitively, thus dynamic disaster breeds evolution different phase and carries out dynamic early-warning.
Taking supporting measure to avoid cell wall rupture in monitoring holes, via hole hole wall does not carry out supporting process, keeps open-hole state, and when surrouding rock stress increases, the change of via hole hole wall country rock micro rupture state development, is that dynamic disaster breeds the most directly reflecting of evolutionary process.
Depending on the degree of depth of via hole is according to monitoring country rock area size, the monitoring holes degree of depth is smaller than the via hole degree of depth.Via hole determines depending on lithology, operating condition etc. with monitoring holes spacing and relative position.Via hole and the hole depth of monitoring holes and cloth hole site basic design principles are that the sensor in all monitored holes of energy of the destruction signals in the range of guarantee via hole receives.One group of monitoring holes and via hole can be used, may be used without organizing monitoring holes and via hole more, adjacent via hole spacing is depending on rock power disaster tendentiousness, dynamic disaster danger upper zone should be laid closeer, form the real-time monitoring net of roadway's sides, but via hole spacing is no less than acoustic emission signal propagation distance, it is to avoid the monitoring signal of adjacent via hole interferes.
Rational choice wall of hole and sensor installation method in monitoring holes, aperture sealing of hole after installation, it is ensured that sensor signal reception.
The method for early warning that this system relates to comprises the steps:
One, the acoustic emission sensor in all monitored holes of energy of the destruction signals in the range of the distance at roadway's sides layout monitoring holes and via hole, monitoring holes and via hole meets via hole receives；
Two, in monitoring holes, lay acoustic emission sensor, each monitoring holes is laid 1-5 acoustic emission sensor, after having laid, monitoring holes aperture is closed；
Three, breeding evolution different phase acoustie emission event correspondence threshold value according to disaster, use acoustic emission Real-time Collection monitoring system, the via hole hole wall coal petrography Surface Rupture Events causing the change of country rock internal stress carries out dynamic monitoring, it is achieved dynamic disaster dynamic early-warning.
Monitoring holes acoustic emission signal reception at on-the-spot test different depth, determines the parameters such as via hole and the monitoring holes degree of depth, via hole and monitoring holes spacing, adjacent via hole spacing, acoustic emission sensor installation position.
Determine that monitored area dynamic disaster breeds evolution different phase and corresponding threshold value crucial thereof according to historical record, on-the-spot test with theory analysis.
Having the beneficial effect that of technique scheme of the present utility model:
The roadway surrounding rock rupture process that dynamic disaster is bred in evolutionary process by this system by laying via hole is revealed in via hole periphery, by the way of laying monitoring holes and being installed in monitoring holes by sensor, reduce useful signal decay disturb with on-site noise, directly monitoring via hole hole wall country rock micro rupture state, overcome the deficiency of drilling cuttings method and existing acoustic emission method, dynamic disaster is monitored in real time.This utility model overcomes drilling cuttings method (for coal mine rock burst early warning) operational hazards, can not monitor in real time and acoustic-emission useful signal is weak, noise jamming causes by force monitoring result to owe defect accurately, improves safety and the effectiveness of bump monitoring.
Accompanying drawing explanation
Fig. 1 is that acoustic emission Real-time Collection of the present utility model monitors system structure schematic diagram；
Fig. 2 is cloth hole, the tunnel schematic diagram of the dynamic disaster early warning system rupturing via hole monitoring based on roadway surrounding rock of the present utility model；
Fig. 3 is bump dynamic early-warning threshold value schematic diagram one of the present utility model；
Fig. 4 is by the bump dynamic early-warning threshold value schematic diagram two of utility model.
Wherein: 1-monitoring holes；2-via hole；3-acoustic emission sensor；4-rosette；5-holding wire；6-power supply；7-supply lines；8-Acquisition Instrument；9-data transmission system；10-monitors main frame.
Detailed description of the invention
For making the technical problems to be solved in the utility model, technical scheme and advantage clearer, it is described in detail below in conjunction with the accompanying drawings and the specific embodiments.
This utility model ruptures the dynamic disaster early warning system of via hole monitoring based on roadway surrounding rock, utilize the mode laying via hole, the roadway surrounding rock rupture process bred by dynamic disaster in evolutionary process is revealed in via hole periphery, and monitored in real time by sound emission monitoring technology means, dynamic early-warning, and by the way of being installed in monitoring holes by sensor, reduce useful signal decay and on-site noise interference.
This system and the method for early warning related to are specific as follows:
One, as shown in Figure 1, in acoustic emission Real-time Collection monitoring system, rosette 4 is connected between acoustic emission sensor 3 and Acquisition Instrument 8, power supply 6 powers to Acquisition Instrument 8 by supply lines 7, the signal that acoustic emission sensor 3 receives transmits to Acquisition Instrument 8 through rosette 4 and holding wire 5, and the signal that Acquisition Instrument 8 is collected is again through data transmission system 9 transmission extremely monitoring main frame 10.
Two, as shown in Figure 2, monitoring holes 1 and via hole 2 is arranged at roadway's sides, the acoustic emission sensor 3 that monitoring holes 1 and the distance of via hole 2 meet in all monitored holes 1 of energy of the destruction signals in the range of via hole 2 receives, monitoring holes 1 take supporting measure to avoid cell wall rupture, via hole 2 hole wall does not carry out supporting process, keeping open-hole state, when surrouding rock stress increases, the change of hole wall country rock micro rupture state development, is that dynamic disaster breeds the most directly reflecting of evolutionary process；Depending on the degree of depth of via hole 2 is according to monitoring country rock area size, monitoring holes 1 degree of depth is smaller than via hole 2 degree of depth, and via hole 2 determines depending on lithology, operating condition etc. with monitoring holes 1 spacing and relative position；One group of monitoring holes 1 and via hole 2 can be used, may be used without organizing monitoring holes 1 and via hole 2 more, the spacing of adjacent via hole 2 is depending on rock lash tendentiousness, deathtrap should be laid closeer, form the real-time monitoring net of roadway's sides, but spacing is no less than acoustic emission signal propagation distance, it is to avoid the monitoring signal of adjacent via hole 2 interferes.
Three, each monitoring holes 1 is installed 1～5 acoustic emission sensor 3, after having laid, monitoring holes 1 aperture is closed；
Four, evolution different phase acoustie emission event correspondence threshold value (Fig. 3 and Fig. 4) is bred according to disaster, use acoustic emission Real-time Collection monitoring system, the via hole 2 hole wall country rock Surface Rupture Events causing the change of country rock internal stress carries out dynamic monitoring, it is achieved dynamic disaster dynamic early-warning.
In actual mechanical process, monitoring holes 1 acoustic emission signal reception at on-the-spot test different depth, determines the parameters such as via hole 2 and the degree of depth of monitoring holes 1, via hole 2 and the spacing of monitoring holes 1, the spacing of adjacent via hole 2, acoustic emission sensor 3 installation position.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; on the premise of without departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (5)
1. a dynamic disaster early warning system for via hole monitoring is ruptured based on roadway surrounding rock, its
It is characterised by: include that acoustic emission Real-time Collection monitors system, monitoring holes (1), via hole (2)
With acoustic emission sensor (3), wherein, monitoring holes (1) and via hole (2) are arranged on tunnel
Two help, and acoustic emission sensor (3) is positioned in monitoring holes (1)；Acoustic emission Real-time Collection is monitored
System includes monitoring main frame (10), data transmission system (9), power supply (6), Acquisition Instrument (8)
With rosette (4), rosette (4) is connected to acoustic emission sensor (3) and Acquisition Instrument (8)
Between, power supply (6) powers to Acquisition Instrument (8) by supply lines (7), voice sending sensor
The signal that device (3) receives transmits to Acquisition Instrument (8) with holding wire (5) through rosette (4),
The signal that Acquisition Instrument (8) is collected transmits to monitoring main frame (10) through data transmission system (9) again.
The power rupturing via hole monitoring based on roadway surrounding rock the most according to claim 1
Disaster early warning system, it is characterised in that: described monitoring holes (1) is laid acoustic emission sensor
(3), laying 1-5 acoustic emission sensor (3) in each monitoring holes (1), laying completes
After by monitoring holes (1) aperture close.
The power rupturing via hole monitoring based on roadway surrounding rock the most according to claim 1
Disaster early warning system, it is characterised in that: described monitoring holes (1) takes supporting measure to avoid hole
Wall ruptures, and via hole (2) hole wall does not carry out supporting process, keeps open-hole state.
The power rupturing via hole monitoring based on roadway surrounding rock the most according to claim 1
Disaster early warning system, it is characterised in that: monitoring holes (1) and via hole (2) they are one group or one
More than group；Described via hole (2) spacing is not less than acoustic emission signal propagation distance.
The power rupturing via hole monitoring based on roadway surrounding rock the most according to claim 1
Disaster early warning system, it is characterised in that: the degree of depth of described via hole (2) is enclosed according to need to monitor
Depending on rock area size, monitoring holes (1) degree of depth is less than via hole (2) degree of depth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620361927.2U CN205714288U (en) | 2016-04-26 | 2016-04-26 | The dynamic disaster early warning system of via hole monitoring is ruptured based on roadway surrounding rock |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115434754A (en) * | 2022-10-17 | 2022-12-06 | 北京科技大学 | Dynamic disaster early warning method based on effective electromagnetic radiation intensity of coal rock |
| CN116448883A (en) * | 2023-06-13 | 2023-07-18 | 长江三峡勘测研究院有限公司（武汉） | Method, system, equipment and terminal for monitoring and early warning high-level dangerous rock body of scarp |
-
2016
- 2016-04-26 CN CN201620361927.2U patent/CN205714288U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115434754A (en) * | 2022-10-17 | 2022-12-06 | 北京科技大学 | Dynamic disaster early warning method based on effective electromagnetic radiation intensity of coal rock |
| CN116448883A (en) * | 2023-06-13 | 2023-07-18 | 长江三峡勘测研究院有限公司（武汉） | Method, system, equipment and terminal for monitoring and early warning high-level dangerous rock body of scarp |
| CN116448883B (en) * | 2023-06-13 | 2023-09-26 | 长江三峡勘测研究院有限公司（武汉） | Method, system, equipment and terminal for monitoring and early warning high-level dangerous rock body of scarp |
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