CN204646224U - A kind of coal-rock mass ground stress distribution characteristics sniffer - Google Patents
A kind of coal-rock mass ground stress distribution characteristics sniffer Download PDFInfo
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- CN204646224U CN204646224U CN201520342375.6U CN201520342375U CN204646224U CN 204646224 U CN204646224 U CN 204646224U CN 201520342375 U CN201520342375 U CN 201520342375U CN 204646224 U CN204646224 U CN 204646224U
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Abstract
A kind of coal-rock mass ground stress distribution characteristics sniffer, to construct in coal rock layer two isometric and parallel borings in down-hole pilot to be measured, in a boring, spacing distance arranges multiple transmitting transducer, in another boring, spacing distance arranges multiple receiving transducer, ultrasonic wave is converted to by transmitting transducer, ultrasonic wave will be that Medium Propagation is to receiving transducer corresponding thereto with coal and rock, receiving transducer converts the ultrasonic wave received to electric pulse, and returns the signal receiver in signal transmitting and receiving main control system by cable transmission; Regionality detection is carried out to the geostatic stress distribution characteristics in Surrounding Rock Masses of Roadway or work plane front coal rock layer, peak stress position clearly, during digging operation, geostatic stress concentrated area can be avoided or take preventive measures in time, to the generation of prevention down-hole bump and the coal and gas prominent danger forecasting important in inhibiting of getting working face, can disposablely to complete on a large scale, regionally stress distribution detection.
Description
Technical field
The utility model relates to a kind of coal-rock mass ground stress distribution characteristics sniffer, is especially a kind ofly applicable to detect around coal mine down-hole tunnel or the method for the distribution characteristics of work plane front geostatic stress and device.
Background technology
Along with the increase of China's coal-mine mining depth, the Burst Tendency of coal seam and country rock strengthens, very easily rock blast hazard is there is in the high-ground stress region of roadway or work plane, and easily lure that coal and gas prominent occurs in the coal seam with outburst hazard into, this causes great threat to the life security of Safety of Coal Mine Production and vast Coal Mine Staff.We know, around roadway or work plane, the stress distribution of coal and rock and bump has close relationship, and the peak value of geostatic stress is larger, nearer apart from work plane, rock blast hazard more easily occurs, brings out coal and gas prominent.Therefore, accurately and timely the stress distribution in the coal and rock of work plane front is detected, identified sign concentrated area, to predicting that gas outburst risk, control rock blast hazard are significant.The domestic and international test to geostatic stress is at present generally point prediction pattern, is difficult to test on a large scale, more difficultly carries out regionality detection to the stress distribution feature in coal and rock, and the utility model proposes a kind of detection method of simple possible at this point.
Utility model content
Technical problem: the purpose of this utility model solves in current detecting earth stress technology, little to the detection single scope of the surrouding rock stress distribution characteristics of tunnel or getting working face, wanting feasible region property to detect on a large scale needs repeatedly to carry out, effort, time-consuming problem, there is provided a kind of easy and simple to handle, disposablely can complete method and the device of the detection of surrouding rock stress distribution characteristics regionality.
Technical scheme: coal-rock mass ground stress distribution characteristics sniffer of the present utility model, comprises signal transmitting and receiving main control system, transmitting transducer, receiving transducer, hard socket and cable; Described signal transmitting and receiving main control system is made up of signal transmitter, signal receiver and signal processing system, described signal transmitter is connected with the multiple transmitting transducers be located in a hard socket by cable, continual and steady generation electric impulse signal, described signal receiver is then connected with the multiple receiving transducers be located in another root hard socket by cable, sends the electric impulse signal collected to signal processing system.
A described hard socket is interior is that 0.5m ~ 1m installs a transmitting transducer every distance L2, and another root hard socket is interior is that 0.5m ~ 1m installs a receiving transducer every distance L2.
Describedly be located at multiple transmitting transducers in a hard socket by cable series connection, convert electric impulse signal to ultrasonic signal.
Describedly be located at multiple receiving transducers in another root hard socket by cable series connection, convert the ultrasonic wave received to electric impulse signal.
Beneficial effect: owing to have employed technique scheme, certain corresponding relation is there is in the utility model according to the structure of sound wave amplitude, frequency spectrum and rock and stress state, along with the degree of crushing of coal and rock increase, springy texture, stress reduces, sound wave can corresponding generation velocity of wave reduce, the change of amplitude reduction.Regionality detection can be carried out to the geostatic stress distribution characteristics of Surrounding Rock Masses of Roadway or work plane front coal rock layer, peak stress position clearly, and then when underground coal mine carries out digging operation, geostatic stress concentrated area can be avoided or take preventive measures in time, to the generation of prevention down-hole bump and the coal and gas prominent danger forecasting important in inhibiting of getting working face.Compared with existing similar technique, to the geostatic stress distribution characteristics in Surrounding Rock Masses of Roadway stress or work plane front, disposablely can complete extensive, regional detection, time saving and energy saving, efficiently quick.Its method is easy, easy to operate, and the device adopted is simple, and result of use is good, has practicality widely in the art.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-signal transmitting and receiving main control system, 2-transmitting transducer, 3-receiving transducer, 4-hard socket, 5-cable.
Detailed description of the invention
Below in conjunction with accompanying drawing, an embodiment of the present utility model is further described:
As shown in Figure 1, coal-rock mass ground stress distribution characteristics sniffer of the present utility model, comprises signal transmitting and receiving main control system 1, transmitting transducer 2, receiving transducer 3, hard socket 4 and cable 5; Described signal transmitting and receiving main control system 1 is made up of signal transmitter, signal receiver and signal processing system, described signal transmitter is connected with the multiple transmitting transducers 2 be located in a hard socket 4 by cable 5, continual and steady generation electric impulse signal, a described hard socket 4 is interior is that 0.5m ~ 1m installs a transmitting transducer 2 every distance L2, the multiple transmitting transducers 2 be located in a hard socket 4 are together in series by cable 5, convert electric impulse signal to ultrasonic signal.Described signal receiver is then connected with the multiple receiving transducers 3 be located in another root hard socket 4 by cable 5, sends the electric impulse signal collected to signal processing system.Another root hard socket 4 described is interior is that 0.5m ~ 1m installs a receiving transducer 3 every distance L2.The multiple receiving transducers 3 be located in another root hard socket 4 are together in series by cable 5, convert the ultrasonic wave received to electric impulse signal.
Claims (4)
1. a coal-rock mass ground stress distribution characteristics sniffer, comprises signal transmitting and receiving main control system (1), transmitting transducer (2), receiving transducer (3), hard socket (4) and cable (5); It is characterized in that: described signal transmitting and receiving main control system (1) is made up of signal transmitter, signal receiver and signal processing system, described signal transmitter is connected with the multiple transmitting transducers (2) be located in a hard socket (4) by cable (5), continual and steady generation electric impulse signal, described signal receiver is then connected with the multiple receiving transducers (3) be located in another root hard socket (4) by cable (5), sends the electric impulse signal collected to signal processing system.
2. coal-rock mass ground stress distribution characteristics sniffer according to claim 1, it is characterized in that: a described hard socket (4) is interior is that 0.5m ~ 1m installs a transmitting transducer (2) every distance L2, another root hard socket (4) is interior is that 0.5m ~ 1m installs a receiving transducer (3) every distance L2.
3. coal-rock mass ground stress distribution characteristics sniffer according to claim 1, it is characterized in that: described in the multiple transmitting transducers (2) be located in a hard socket (4) be together in series by cable (5), convert electric impulse signal to ultrasonic signal.
4. coal-rock mass ground stress distribution characteristics sniffer according to claim 1, it is characterized in that: described in the multiple receiving transducers (3) be located in another root hard socket (4) be together in series by cable (5), convert the ultrasonic wave received to electric impulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520342375.6U CN204646224U (en) | 2015-05-25 | 2015-05-25 | A kind of coal-rock mass ground stress distribution characteristics sniffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520342375.6U CN204646224U (en) | 2015-05-25 | 2015-05-25 | A kind of coal-rock mass ground stress distribution characteristics sniffer |
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| Publication Number | Publication Date |
|---|---|
| CN204646224U true CN204646224U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520342375.6U Expired - Fee Related CN204646224U (en) | 2015-05-25 | 2015-05-25 | A kind of coal-rock mass ground stress distribution characteristics sniffer |
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| CN (1) | CN204646224U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715295A (en) * | 2016-01-27 | 2016-06-29 | 中国矿业大学 | Method for determining reasonable sealing depth of coal mine bedding gas drainage drill hole |
-
2015
- 2015-05-25 CN CN201520342375.6U patent/CN204646224U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715295A (en) * | 2016-01-27 | 2016-06-29 | 中国矿业大学 | Method for determining reasonable sealing depth of coal mine bedding gas drainage drill hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20160525 |