CN203606048U - Detector for internal continuous stress of coal seam - Google Patents
Detector for internal continuous stress of coal seam Download PDFInfo
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- CN203606048U CN203606048U CN201320821751.0U CN201320821751U CN203606048U CN 203606048 U CN203606048 U CN 203606048U CN 201320821751 U CN201320821751 U CN 201320821751U CN 203606048 U CN203606048 U CN 203606048U
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- coal seam
- cylindrical rubber
- tension gauge
- strain
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Abstract
The utility model discloses a detector for the internal continuous stress of a coal seam, and the detector comprises a cylindrical rubber protection layer (2), and a plurality of strain modules (1) which are fixed in the cylindrical rubber protection layer (2). The plurality of strain modules (1) are fixed at the radial center of the cylindrical rubber protection layer (2), and uniformly arranged along the length direction of the cylindrical rubber protection layer (2). The plurality of strain modules (1) are connected with other external equipment through light flexible cables (3). According to the utility model, only one drill hole is needed, the structure is simple, the cost is low, and the detector can monitor the internal continuous stress of the coal seam accurately and remotely.
Description
Technical field
The utility model relates to a kind of tension gauge, particularly relates to a kind of inner tension gauge continuously in coal seam of monitoring same boring diverse location local stress for colliery scene production medium-long range.
Background technology
At present, the parties concerned such as colliery are doing the internal stress that extensively applies to the devices such as borehole stressmeter in some scientific research projects and produced on-site and monitor coal seam, general way is all to play at a certain distance the boring that a degree of depth differs, a borehole stressmeter is installed in bottom in each boring, monitor the local stress of this coordinate points, finally can be similar to the stress curve that forms a continuous different depth.This way apart from workplace fashion far away can, when nearer apart from workplace, because have certain distance between each boring, be subject to the violent impact of ahead work face abutment pressure, the stressed of each boring is different, even has a long way to go; Meanwhile, play the boring of some, all may there is certain accidentalia impact in hole individually force environment and taseometer installation etc., cause result there is no comparability.
Utility model content
The technical problems to be solved in the utility model is to provide and a kind of only needs to play a boring, simple in structure, cost is low, and the accurate continuous tension gauge in inside, coal seam of the inner stress continuously in remote monitoring coal seam.
The inner tension gauge continuously in a kind of coal seam; comprise cylindrical rubber protective seam and be fixed on multiple strain module of its inside; described multiple strain module is fixed on described cylindrical rubber protective seam center radially; and evenly distributed along its length, described multiple strain module are connected with other external units by mining light-duty flexible cable.
The inner tension gauge continuously in coal seam described in the utility model, wherein said strain module comprises strain silk and two polar curves of responding to described drilling hole stress, described two polar curves are connected with described mining light-duty flexible cable.
The inner tension gauge continuously in coal seam described in the utility model, the inner tension gauge continuously in wherein said coal seam is arranged in boring, and the diameter of described cylindrical rubber protective seam is less than described bore diameter 5-8mm.
The inner tension gauge continuously in coal seam described in the utility model, wherein the distance of adjacent two described strain module between being is 1m.
The inner tension gauge difference from prior art continuously in the utility model coal seam is:
The inner tension gauge tool continuously in the utility model coal seam has the following advantages:
The one, cost-saving, only need a boring just can complete and answer continuously force measurement.
The 2nd, data are accurate, can monitor continuous stress in same boring, study more accurately lateral-supporting pressure and leading support pressure stress characteristics, draw coal and rock internal stress change curve, are applicable to scientific research and use.
The 3rd, controllability is strong, can provide the monitoring device of different length and different-diameter to adapt to different boring, also can, according to different monitoring requirements, provide the monitoring device of differently strained block density.
The 4th, coordinate detection system to use together, real-time online, one day 24 hours Real-Time Monitorings, without more manpower and materials, can complete the monitoring that online stress in coal bed changes.
Below in conjunction with accompanying drawing, the inner tension gauge continuously in coal seam of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is the inner structural representation of tension gauge continuously in coal seam described in the utility model;
Fig. 2 is the structural representation of the strain module in the inner stress monitoring instrument continuously in coal seam described in the utility model.
Embodiment
As depicted in figs. 1 and 2; the inner tension gauge continuously in a kind of coal seam; comprise cylindrical rubber protective seam 2 and be fixed on multiple strain module 1 of its inside; described multiple strain module 1 is fixed on described cylindrical rubber protective seam 2 center radially; and evenly distributed along its length, described multiple strain module 1 are connected with described shaft bottom data processing substation by mining light-duty flexible cable 3.Described strain module 1 comprises strain silk 4 and two polar curves 5 of responding to described drilling hole stress; described two polar curves 5 are connected with described mining light-duty flexible cable 3; the distance of adjacent two described strain module 1 between being is 1m; the inner tension gauge continuously in described coal seam is arranged in boring; the diameter of described cylindrical rubber protective seam is less than described bore diameter 5-8mm; general bore diameter has 8m, 16m, 24m, 32m etc.By the time, when borehole wall distortion extruded cylindrical rubber cover 2, its internal strain silk 4 resistance change (attenuate elongated, it is large that resistance becomes), and then cause output current to change.
The inner tension gauge continuously in coal seam described in the utility model coordinates other external units formation monitoring systems to use together, and described system comprises the inner stress monitoring instrument continuously in coal seam; Shaft bottom data processing substation, comprise gathering and control processing enter, signal amplifier, phase-sensitive detector (PSD) and wave filter, the input end of wherein said collection control processing enter is connected with the inner stress monitoring instrument continuously in described coal seam, the input end of described signal amplifier is connected with the output terminal of described collection control processing enter, the output terminal of described signal amplifier is connected with the input end of described phase-sensitive detector (PSD), and the output terminal of described phase-sensitive detector (PSD) is connected with the input end of described wave filter; Signal converter, its input end is connected with the output terminal of described wave filter; Aboveground real-time monitoring system, comprises data conversion equipment and industrial computer, and the input end of described data conversion equipment is connected with the output terminal of described signal converter by mining light-duty flexible cable, and the output terminal of described data conversion equipment is connected with described industrial computer; Intrinsic safety stabilized voltage supply, is connected with described signal converter with described shaft bottom data processing substation respectively by mining movable light flexible cable.
Wherein, the inner stress monitoring instrument continuously in described coal seam is placed in coal bed drilling, responds to the stress of described borehole sidewall; Described shaft bottom data processing substation gathers the inner stress signal that stress monitoring instrument senses continuously in described coal seam, and converting thereof into voltage or current signal transfer to described signal converter, described signal converter is converted into described voltage or current signal digital signal and is transferred to described aboveground real-time monitoring system; Intrinsic safety stabilized voltage supply, collection control processing enter, phase-sensitive detector (PSD), wave filter, signal converter are explosion-proof device; The inner stress monitoring instrument continuously in described coal seam is cylindrical; its diameter is less than described bore diameter 5-8mm, and when the extruded cylindrical of hole wall distortion by the time rubber cover 2, its internal strain silk 4 resistance change and (attenuate elongated; it is large that resistance becomes), and then cause output current to change.
Described collection control processing enter is connected with described strain module 1 by described mining light-duty flexible cable 3, converts the resistance change of described strain silk 4 (being force value) to voltage or current signal; The feeble signal that gathers the output of control processing enter is carried out distortionless amplification by described signal amplifier, forms modulated wave; The modulated wave after amplifying is reduced to tested strain signal waveform by described phase-sensitive detector (PSD), reflect the direction of tested strain signal simultaneously, higher harmonic components in described wave filter filtering phase-sensitive detector (PSD) output signal, to obtain desirable output waveform signals, and is transferred to described signal converter.
Described shaft bottom data processing substation and signal converter are suspended on coal mine down-hole tunnel coal and help, and do not take borehole operation space, and logical mining light-duty flexible cable is connected with aboveground described aboveground real-time detecting system; The strain signal that described signal converter transmits the described wave filter of reception is also translated into digital signal, be transferred to described aboveground real-time monitoring system, comprise data conversion equipment and industrial computer, the input end of described data conversion equipment is connected with the output terminal of described signal converter by mining light-duty flexible cable, and the output terminal of described data conversion equipment is connected with described industrial computer; Described data conversion equipment is existing common equipment, as data converter; Software comprises Data Management Analysis software, be generally the CRMS3.0 monitoring center software of University of Science & Technology, Beijing's microearthquake research centre research and development, described digital signal is stored, finally drawn the coal seam internal stress actual value of described boring after data-switching, and export by described display; Preferably, described collection control processing enter is electric bridge, generally refers to Hui Dengsi electric bridge.
The course of work of described system is generally as follows:
Inner described coal seam stress monitoring instrument is continuously put into boring, borehole sidewall is exerted pressure to it, the strain silk 4 of the described strain module 1 of described cylindrical rubber protective seam distortion extruding, described collection control processing enter (electric bridge) is connected with described strain module 1 by described mining light-duty flexible cable 3, converts the resistance change of described strain silk 4 (being force value) to voltage or current signal; The feeble signal that gathers the output of control processing enter is carried out distortionless amplification by described signal amplifier, forms modulated wave; The modulated wave after amplifying is reduced to tested strain signal waveform by described phase-sensitive detector (PSD), reflect the direction of tested strain signal simultaneously, higher harmonic components in described wave filter filtering phase-sensitive detector (PSD) output signal, to obtain desirable output waveform signals, and is transferred to described signal converter.The strain signal that described signal converter transmits the described wave filter of reception is also translated into digital signal, be transferred to described aboveground real-time monitoring system, described aboveground real-time monitoring system comprises data conversion equipment and computer, software comprises Data Management Analysis software, be generally the CRMS3.0 monitoring center software of University of Science & Technology, Beijing's microearthquake research centre research and development, described digital signal is stored, finally drawn the coal seam internal stress actual value of described boring after data-switching, and export by described display; Intrinsic safety stabilized voltage supply is whole system power supply.
Native system is by the monitoring of the STRESS VARIATION to coal mine underground coal bed or the same boring diverse location in rock stratum, determine support pressure size in coal and rock, measure because of mining influence coal seam or the variation of internal stress field, rock stratum, can arrange according to Monitoring Data, draw coal and rock internal stress change curve, prediction, forecast coal and rock internal support Pressure Variation.Both reduce drilling hole amount and part manpower and materials, saved project funds, increased again professional, the accuracy of corresponding monitoring result.
Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (4)
1. the inner tension gauge continuously in coal seam; it is characterized in that; comprise cylindrical rubber protective seam (2) and be fixed on multiple strain module (1) of its inside; described multiple strain module (1) is fixed on described cylindrical rubber protective seam (2) center radially; and evenly distributed along its length, described multiple strain module (1) are connected with other external units by mining light-duty flexible cable (3).
2. the inner tension gauge continuously in coal seam according to claim 1, it is characterized in that: described strain module (1) comprises strain silk (4) and two polar curves (5) of responding to described drilling hole stress, and described two polar curves (5) are connected with described mining light-duty flexible cable (3).
3. the inner tension gauge continuously in coal seam according to claim 2, is characterized in that: the inner tension gauge continuously in described coal seam is arranged in boring, and the diameter of described cylindrical rubber protective seam (2) is less than described bore diameter 5-8mm.
4. the inner tension gauge continuously in coal seam according to claim 1, is characterized in that: the distance between adjacent two described strain module (1) is 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821751.0U CN203606048U (en) | 2013-12-13 | 2013-12-13 | Detector for internal continuous stress of coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320821751.0U CN203606048U (en) | 2013-12-13 | 2013-12-13 | Detector for internal continuous stress of coal seam |
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| Publication Number | Publication Date |
|---|---|
| CN203606048U true CN203606048U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320821751.0U Expired - Fee Related CN203606048U (en) | 2013-12-13 | 2013-12-13 | Detector for internal continuous stress of coal seam |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533395A (en) * | 2014-12-30 | 2015-04-22 | 晋能集团有限公司 | Mining intrinsically safe multi-point displacement meter |
| CN104748664A (en) * | 2015-03-13 | 2015-07-01 | 南华大学 | Rock-soil mass interior displacement measuring system |
| CN105784967A (en) * | 2016-03-07 | 2016-07-20 | 太原理工大学 | Stress and displacement continuous measuring method for coal mine similar simulation experiments |
-
2013
- 2013-12-13 CN CN201320821751.0U patent/CN203606048U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533395A (en) * | 2014-12-30 | 2015-04-22 | 晋能集团有限公司 | Mining intrinsically safe multi-point displacement meter |
| CN104533395B (en) * | 2014-12-30 | 2017-09-29 | 晋能集团有限公司 | A kind of mining intrinsic safety type multipoint displacement meter |
| CN104748664A (en) * | 2015-03-13 | 2015-07-01 | 南华大学 | Rock-soil mass interior displacement measuring system |
| CN104748664B (en) * | 2015-03-13 | 2017-10-24 | 南华大学 | A kind of Rock And Soil internal displacement system for measuring quantity |
| CN105784967A (en) * | 2016-03-07 | 2016-07-20 | 太原理工大学 | Stress and displacement continuous measuring method for coal mine similar simulation experiments |
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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: 20140521 Termination date: 20141213 |
|
| EXPY | Termination of patent right or utility model |