CN103207418A - Coal mass volume-expanding detector for coal face and detection method - Google Patents
Coal mass volume-expanding detector for coal face and detection method Download PDFInfo
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- CN103207418A CN103207418A CN2013101274269A CN201310127426A CN103207418A CN 103207418 A CN103207418 A CN 103207418A CN 2013101274269 A CN2013101274269 A CN 2013101274269A CN 201310127426 A CN201310127426 A CN 201310127426A CN 103207418 A CN103207418 A CN 103207418A
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Abstract
The invention discloses a coal mass volume-expanding detector for a coal face and a detection method. The coal mass volume-expanding detector is characterized in that a large-diameter steel tube and a small-diameter steel tube penetrating through the large-diameter steel tube are arranged into a tube-in-tube structure, and the small-diameter steel tube can move axially in the large-diameter steel tube; steel shrapnels are respectively arranged at the front end of the large-diameter steel tube and the front end of the small-diameter steel tube in an umbrella-shaped mode, and the steel shrapnels arranged in drill holes in a supporting and expanding mode enable the large-diameter steel tube and the small-diameter steel tube to be respectively fixed at the corresponding positions in a pawl mode; and a scale mark for measuring the axial relative displacement of the large-diameter steel tube and the small-diameter steel tube is axially arranged on the tail portion of the small-diameter steel tube. The coal mass volume-expanding detector for the coal face is used for detecting the coal mass volume-expanding expansion caused by mining-induced stress influence on the coal face, and the effective detection method for studying the coal mass volume-expanding phenomenon on the coal face is provided.
Description
The application is to be that February 10, application number in 2012 are 2012100306408, denomination of invention is dividing an application of coal face coal dilatation detector and detection method the applying date.
Technical field
The present invention relates to a kind of coal face coal dilatation detector and detection method, be used for directly scene being carried out in the coal body dilatation in the working face mining process and survey, influenced by mining-induced stress to cause the rule of coal body dilatation expansion to determine coal-face the place ahead.
Background technology
Coal petrography mash gas dynamic disaster is the significant problem that influences coal mine production safety, so the preventing and controlling of coal petrography mash gas dynamic disaster are significant.Absorption and the desorb balance of gas in the coal body broken in the dilatation of coal-face the place ahead coal body, sharply changes thereby produce the gas pressure gradient, easily causes coal petrography mash gas dynamic disaster; Technical measures such as effective coal seam release are implemented in the zone that dilatation takes place at the workplace coal seam, can reach the purpose of effective control coal rock dynamic disaster; Therefore realizing the effective detection to coal-face the place ahead coal body dilatancy, is the important prerequisite condition of effectively implementing the measure of coal rock dynamic disaster Prevention Technique, but instrument and the method still the dilatancy of workplace the place ahead coal body not surveyed at present.
Summary of the invention
In order to address the above problem, the invention provides a kind of coal face coal dilatation detector and detection method, be used for surveying the volume change rule that coal-face the place ahead coal body is adopted with workplace, whether the dilatancy that volume increases takes place to judge coal body.
The technical scheme that the present invention adopts for its technical matters of solution is:
The design feature of coal face coal dilatation detector of the present invention is: with tube-in-tube structure large diameter steel pipe and the minor-diameter steel-tube that is applied in the large diameter steel pipe are set, described minor-diameter steel-tube can be axially mobile in large diameter steel pipe; Be umbrella at the front end of described large diameter steel pipe and minor-diameter steel-tube and be respectively arranged with each steel shell fragment, rise each steel shell fragment in boring of support is that form with ratchet is separately fixed on the relevant position large diameter steel pipe and minor-diameter steel-tube; Be provided for measuring the scale mark of the axial relative shift between large diameter steel pipe and the minor-diameter steel-tube vertically at the afterbody of described minor-diameter steel-tube.
The design feature of coal face coal dilatation detector of the present invention also is:
The diameter that large diameter steel pipe is set is 40mm, and the diameter of minor-diameter steel-tube is 35mm; The open diameter of each steel shell fragment of described large diameter steel pipe front end is 60mm, and the open diameter of minor-diameter steel-tube front end steel shell fragment is 55mm.
The scale division value of described minor-diameter steel-tube afterbody scale mark is 1mm, and range is not less than 500mm.
The characteristics of the detection method of coal face coal dilatation detector of the present invention are:
A, arrange that above the coal seam is surveyed a tunnel, the place ahead that is arranged in working face wall in described detection tunnel is surveyed boring by the base plate of surveying the tunnel to the coal seam construction, described detection boring is vertical with the coal seam, and described detection boring enters 1.5m in the coal seam at least;
B, coal face coal dilatation detector is placed in surveys in the boring, make the pipe front end of minor-diameter steel-tube reach the bottom, hole of surveying boring, and make the pipe front end of the pipe front end of large diameter steel pipe and minor-diameter steel-tube be no less than the distance of 1.5m apart; The afterbody scale value L1 of record coal face coal dilatation this moment detector;
C, along with the propelling of workplace, the afterbody scale of the described coal face coal dilatation of real-time monitored detector changes, obtain in the coal body 2 relative shift with the afterbody scale changing value of described coal face coal dilatation detector, characterize coal body dilatation degree with described relative shift.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention can survey the coal body dilatation expansion rule that coal-face is influenced by mining-induced stress to cause, and has realized the detection to coal-face the place ahead coal body dilatancy, for research coal-face the place ahead coal body dilatancy provides detection method;
2, panel detector structure of the present invention is simple, and is easy to operate.
Description of drawings
Fig. 1 is panel detector structure synoptic diagram of the present invention;
Fig. 2 is detector front end synoptic diagram of the present invention;
Fig. 3 is detection method synoptic diagram of the present invention;
Number in the figure: 11 large diameter steel pipes; 12 minor-diameter steel-tubes; 3a large-diameter pipe steel shell fragment; 3b small diameter tube steel shell fragment; 14 scale marks; 21 survey the tunnel; 22 coal seams; 23 borings; 24 working face walls; 25 goafs.
Embodiment
Referring to Fig. 1 and Fig. 2, the coal face coal dilatation detector in the present embodiment is to adopt tube-in-tube structure, and large diameter steel pipe 11 and the minor-diameter steel-tube 12 that is applied in the large diameter steel pipe 11 are set, and minor-diameter steel-tube 12 can be axially mobile in large diameter steel pipe 11; Be umbrella at the front end of large diameter steel pipe 11 and be provided with each large-diameter pipe steel shell fragment 3a, be umbrella at the front end of minor-diameter steel-tube 12 and be provided with each small diameter tube steel shell fragment 3b; Be evenly to distribute in steel pipe front end periphery with four steel shell fragments in the present embodiment, rise each steel shell fragment in boring of support is that form with ratchet is separately fixed on the relevant position large diameter steel pipe 11 and minor-diameter steel-tube 12, not displacement backward; Be provided for measuring the scale mark 14 of the axial relative shift between large diameter steel pipe 11 and the minor-diameter steel-tube 12 vertically at the afterbody of minor-diameter steel-tube 12.
In concrete the enforcement, the diameter that large diameter steel pipe 11 can be set is 40mm, and each large-diameter pipe steel shell fragment 3a is after opening, and the diameter of the disk that its each steel shell fragment front end is is 60mm; The diameter of minor-diameter steel-tube 12 is 35mm, and each small diameter tube steel shell fragment 3b is after opening, and the diameter of its each steel shell fragment disk that front end is is 55mm; The scale division value that minor-diameter steel-tube 12 afterbody scale marks 14 are set is 1mm, and range is not less than 500mm.
When dilatancy that coal body generation volume increases, minor-diameter steel-tube 12 is subjected to displacement with respect to the deep of large diameter steel pipe 11 to boring 23, and displacement is read by scale mark 14, judges with this whether coal body dilatation takes place.
Detection method is as shown in Figure 3:
At first, the 25m position arranges that is surveyed a tunnel 21 above coal seam 22, in surveying tunnel 21, surveyed by the construction in the coal seam 22 of the base plate of surveying tunnel 21 apart from the 100m position, the place ahead of working face wall 24 and hole 23, the diameter of surveying boring 23 is 45mm, it is vertical with coal seam 22 to survey boring 23, and surveys and hole 23 to enter in the coal seam 22 1.5m at least dark.
Then, coal face coal dilatation detector is placed in the detection boring 23, the bottom, hole that the pipe front end of minor-diameter steel-tube 12 is reached survey boring 23, and the pipe front end of the pipe front end that makes large diameter steel pipe 11 and minor-diameter steel-tube 12 is at a distance of many distances of 1.5m; The afterbody scale value L1 of record coal body dilatation this moment detection instrument.
Along with the propelling of workplace, the afterbody scale of real-time monitored coal body dilatation detection instrument changes, with the afterbody scale changing value sign coal body dilatation degree of coal body dilatation detection instrument.Be positioned at shown in Fig. 3 working face wall 24 the rear be goaf 25.In the present embodiment, survey the position of tunnel 21 above the workplace coal seam and can suitably adjust according to concrete field condition; Surveying the distance of boring 23 and workplace, is principle to guarantee enough observed ranges, can suitably adjust according to concrete field condition.
Claims (3)
1. coal face coal dilatation detector, it is characterized in that: large diameter steel pipe (11) is set and is applied in minor-diameter steel-tube (12) in the large diameter steel pipe (11) with tube-in-tube structure, described minor-diameter steel-tube (12) can be axially mobile in large diameter steel pipe (11); Be umbrella at the front end of described large diameter steel pipe (11) and minor-diameter steel-tube (12) and be respectively arranged with each steel shell fragment, rise each steel shell fragment in boring of support is that form with ratchet is separately fixed on the relevant position large diameter steel pipe (11) and minor-diameter steel-tube (12); Be provided for measuring the scale mark (14) of the axial relative shift between large diameter steel pipe (11) and the minor-diameter steel-tube (12) vertically at the afterbody of described minor-diameter steel-tube (12);
The detection method of described coal face coal dilatation detector is:
A, (22) top arranges that is surveyed a tunnel (21) in the coal seam, in described detection tunnel (21), be arranged in the place ahead of working face wall by (22) the construction detection borings (23) to the coal seam of the base plate of surveying tunnel (21), described detection boring (23) is vertical with coal seam (22), and described detection boring (23) enters 1.5m in the coal seam (22) at least;
B, coal face coal dilatation detector is placed in surveys in the boring (23), the bottom, hole that the pipe front end of minor-diameter steel-tube (12) is reached survey boring (23), and make the pipe front end of the pipe front end of large diameter steel pipe (11) and minor-diameter steel-tube (12) be no less than the distance of 1.5m apart; The afterbody scale value L1 of record coal face coal dilatation this moment detector;
C, along with the propelling of workplace, the afterbody scale of the described coal face coal dilatation of real-time monitored detector changes, obtain in the coal body 2 relative shift with the afterbody scale changing value of described coal face coal dilatation detector, characterize coal body dilatation degree with described relative shift.
2. coal face coal dilatation detector according to claim 1, the diameter that it is characterized in that arranging large diameter steel pipe (11) is 40mm, the diameter of minor-diameter steel-tube (12) is 35mm; The open diameter of each steel shell fragment of described large diameter steel pipe (11) front end is 60mm, and the open diameter of minor-diameter steel-tube (12) front end steel shell fragment is 55mm.
3. coal face coal dilatation detector according to claim 1 is characterized in that the scale division value of described minor-diameter steel-tube (12) afterbody scale mark (14) is 1mm, and range is not less than 500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310127426.9A CN103207418B (en) | 2012-02-10 | 2012-02-10 | Coal mass volume-expanding detector for coal face and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310127426.9A CN103207418B (en) | 2012-02-10 | 2012-02-10 | Coal mass volume-expanding detector for coal face and detection method |
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| CN 201210030640 Division CN102540275B (en) | 2012-02-10 | 2012-02-10 | Coal body dilatation detector for coal mining surface and detection method of coal body dilatation detector |
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| CN103207418A true CN103207418A (en) | 2013-07-17 |
| CN103207418B CN103207418B (en) | 2015-05-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050982A (en) * | 2016-01-22 | 2018-05-18 | 山东科技大学 | A kind of method for monitoring coal body transversely deforming on-line |
| CN110132199A (en) * | 2019-05-06 | 2019-08-16 | 山东科技大学 | A kind of hard base object model fragmentation parameters in-situ measurement method of stope |
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| US20070131417A1 (en) * | 2005-12-09 | 2007-06-14 | Baker Hughes Incorporated | Casing resonant radial flexural modes in cement bond evaluation |
| CN202075271U (en) * | 2011-05-31 | 2011-12-14 | 河南理工大学 | Rectangular pressure relief opening pressure plate sealing mechanism of coal or rock gas dynamic disaster simulation device |
| CN202421520U (en) * | 2012-02-10 | 2012-09-05 | 安徽理工大学 | Detector for detecting coal mass on coalface |
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2012
- 2012-02-10 CN CN201310127426.9A patent/CN103207418B/en active Active
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| US20070131417A1 (en) * | 2005-12-09 | 2007-06-14 | Baker Hughes Incorporated | Casing resonant radial flexural modes in cement bond evaluation |
| CN202075271U (en) * | 2011-05-31 | 2011-12-14 | 河南理工大学 | Rectangular pressure relief opening pressure plate sealing mechanism of coal or rock gas dynamic disaster simulation device |
| CN202421520U (en) * | 2012-02-10 | 2012-09-05 | 安徽理工大学 | Detector for detecting coal mass on coalface |
Non-Patent Citations (1)
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| 尹光志等人: "突出煤和非突出煤全应力－应变瓦斯渗流试验研究", 《岩土力学》, vol. 32, no. 6, 1 June 2011 (2011-06-01), pages 1613 - 1619 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050982A (en) * | 2016-01-22 | 2018-05-18 | 山东科技大学 | A kind of method for monitoring coal body transversely deforming on-line |
| CN110132199A (en) * | 2019-05-06 | 2019-08-16 | 山东科技大学 | A kind of hard base object model fragmentation parameters in-situ measurement method of stope |
| CN110132199B (en) * | 2019-05-06 | 2020-10-02 | 山东科技大学 | Method for detecting hard basic roof fracture parameters of stope face on site |
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| CN103207418B (en) | 2015-05-06 |
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