CN104265364B - Monitoring determining method for working face goaf lateral coal plastic area width - Google Patents
Monitoring determining method for working face goaf lateral coal plastic area width Download PDFInfo
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- CN104265364B CN104265364B CN201410370533.9A CN201410370533A CN104265364B CN 104265364 B CN104265364 B CN 104265364B CN 201410370533 A CN201410370533 A CN 201410370533A CN 104265364 B CN104265364 B CN 104265364B
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- working face
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- plastic zone
- stress
- signals collecting
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000003245 coal Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000003245 working effect Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A monitoring determining method for the working face goaf lateral coal plastic area width comprises the steps that (a) within the range of advancing a working face by 50 m to 100 m, a plurality of horizontal holes with different depths are drilled in a non-mining wall of a mining roadway; (b) a borehole stressmeter is arranged in each horizontal hole; (c) the borehole stressmeters are all connected to a signal connection station, the signal collection station is arranged in the mining roadway, and the working face is advanced by 200 m to 300 m; (d) the borehole stressmeters and the signal connection station are powered on, and vertical stress of monitoring points is begun to be continued to be monitored; (e) when the working face to be mined is pushed and mined to the position 10 m to 20 m away from the signal collection station, a stress change curve is generated; (f) the type of the stress change curve of the monitoring points is determined, and the working face goaf lateral coal plastic area width is determined. The monitoring determining method is convenient to operate, safe, reliable and high in accuracy.
Description
Technical field
The present invention relates to working face goaf side plastic zone width monitoring determination method.
Background technology
Stope goal goaf side plastic zone width is by one of important evidence of section coal pillar design.Just
For coal body plastic zone or rupture region measurement, existing many measuring methods at present, wherein, applied to spy on method that what application was more have,
Drilling cuttings method, water filling osmosis method, seismic wave method, acoustic-emission etc., but practice have shown that, the rupture to macroscopical cranny development for such method
Sector width measurement effect is preferably, inadequate to Width of Plastic Zone certainty of measurement.And, these methods are not easy to lateral for goaf
Coal body measures.Therefore, at present, for coal body width of plastic zone, especially goal goaf side plastic zone width
Measuring is still a difficult problem.
Borehole stressmeter is the lane side vertical stress monitoring device that underground coal mine is commonly used, and this equipment volume is little, and structure is simple,
It is easily installed, and may be mounted in goaf rear side media coal body, be convenient to the prison to the lateral coal body plastic zone in goaf
Survey.But in fact, borehole stressmeter monitoring result is only coal body corresponding stress value, the meaning of monitoring result essence is to reflect
Monitoring point stress in coal bed variation tendency.Therefore, the monitoring result between different borehole stressmeters does not have relative value, just cannot be accurate yet
Really judge peak stress actual position, the borehole stressmeter monitoring method adopting at present determines for the monitoring of coal body plastic zone
Equally exist the not high problem of the degree of accuracy.
At present, also do not have a kind of work face goaf easy and simple to handle, with high safety, that the degree of accuracy is high lateral in prior art
Coal body plastic zone width monitoring and determination method.
Content of the invention
Using borehole stressmeter monitoring moulding width of coal body exist the degree of accuracy high the reason, mainly borehole stressmeter this
Body precision problem, between different borehole stressmeters, the size of monitoring result can accurately not reflect monitoring point stress intensity relation.
But for same borehole stressmeter, its pressure trend can accurately reflect the change of this monitoring point stress in coal bed
Change trend.Based on this, the invention provides one kind is easy and simple to handle, safe and reliable, it is mined out to monitor the determination accurate working face of result
Area's coal body width of plastic zone monitoring and determination method.
The technical solution used in the present invention is as follows:
Working face goaf side plastic zone width monitoring determination method, comprises the steps:
A (), in the range of advance working face 50～100m, in the non-back production side of stope drift active workings, drills through different depth
Lateral aperture several；
B () arranges a borehole stressmeter in each described horizontal in the hole；
C described borehole stressmeter is all connected to signals collecting station by (), described signals collecting station is arranged in described back production
In tunnel, described stope 200～300m in advance；
D () is powered with described signals collecting station to described borehole stressmeter so as to start answer vertical to each monitoring point
Power continuously monitors；
E () pushes to adopt to during apart from described signals collecting station 10～20m whne described stope, using described signals collecting
The stress data standing gathered generates stress changing curve；
F () determines stress changing curve type before and after working face pushes to adopt for each monitoring point, accordingly, determine that working face is mined out
Coal body width of plastic zone in area.
In above-mentioned working face goaf side plastic zone width monitoring determination method, the described each monitoring of step (f)
The stress changing curve type of point is divided into two kinds, and a kind of is " rising-decline-stable " type curve, and reflection coal body has occurred and that to be moulded
Property destroy, a kind of for " rise-stable " type curve, reflection coal body is still in elastic stage, plastic failure does not occur.According to this
Plant classification, when the stress changing curve type of two neighboring monitoring point different, confirm the lateral coal body plastic zone in goaf
Boundary line is between this two monitoring points, determine inside work face goaf to coal body plastic zone width be this two monitoring points
Line midpoint and the vertical range of described stope drift active workings.
In above-mentioned working face goaf side plastic zone width monitoring determination method, the described lateral aperture of step (a)
It is each perpendicular to lane side, the strike separation of two neighboring described lateral aperture is 1m, and depth difference is 1m.
In above-mentioned working face goaf side plastic zone width monitoring determination method, the described lateral aperture of step (a)
Quantity is 10, and minimum-depth is 5m.
In above-mentioned working face goaf side plastic zone width monitoring determination method, described borehole stressmeter and institute
State signals collecting station connection line to arrange against described non-back production side, and use casing protection.
The technique scheme of the present invention has the advantage that compared to existing technology
1. the working face goaf side plastic zone width monitoring determination method that the present invention provides, due to only need to be in work
Make disposable installation borehole stressmeter before face back production finishes, monitoring process, without manual intervention, enters goaf without workman, because
This, the present invention is easy and simple to handle, and construction cost is low, safe and reliable.
2. the working face goaf side plastic zone width monitoring determination method that the present invention provides, same due to only analyzing
The variation of stress of one borehole stressmeter, does not need to be compared analysis to different borehole stressmeter monitoring numerical value sizes,
Therefore, the present invention has got around the difficult problem that borehole stressmeter itself cannot realize accurate quantitative analysis monitoring, and monitoring determines result precision
Acquisition effectively improves.
Brief description
In order that present disclosure is more likely to be clearly understood, specific embodiment below according to the present invention simultaneously combines
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is working face goaf side plastic zone width monitoring determination method facility layout diagram of the present invention；
Fig. 2 be working face goaf side plastic zone width monitoring determination method of the present invention obtain monitoring point " on
Liter-decline-stable " type stress changing curve and " rise-stablize " type stress changing curve.
In figure reference is expressed as: 1- stope, 2- stope drift active workings, 3- non-back production side, 4- lateral aperture, and 5- holes
Stressometer, 6- signals collecting station, 7- work face goaf, 8- " rise-decline-stable " type stress changing curve, 9- " rise-
Stable " type stress changing curve.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Described working face goaf side plastic zone width monitoring determination method, comprises the steps:
A (), in the range of 50～100m of advance working face 1, in the non-back production side 3 of stope drift active workings 2, drills through difference
The lateral aperture 4 of depth several；
B () arranges a borehole stressmeter 5 in each described lateral aperture 4；
C described borehole stressmeter 5 is all connected to signals collecting station 6 by (), described signals collecting station 6 is arranged in described returning
Adopt in tunnel 2, the distance of described stope 1 is 200～300m in advance；
D () is powered to described borehole stressmeter 5 and described signals collecting station 6, start to each monitoring point vertical stress
Continuously monitor；
(e) whne described stope 1 push to adopt to the distance with described signals collecting station 6 be 10～20m when, using described
The stress data that signals collecting station 6 is gathered generates stress changing curve；
F () determines stress changing curve type before and after working face pushes to adopt for each monitoring point, accordingly, determine that working face is mined out
Coal body width of plastic zone in area 7.
In the present embodiment, the stress changing curve type of the described each monitoring point of step (f) is divided into two kinds, a kind of for " on
Rise-decline-stable " type curve 8, a kind of is " rise-stablize " type curve 9.
In the present embodiment, the described lateral aperture of step (a) 4 is each perpendicular to lane side, the trend of two neighboring described lateral aperture 4
Spacing is 1m, and depth difference is 1m.
In the present embodiment, the described lateral aperture of step (a) 4 quantity is 10, and minimum-depth is 5m.
In the present embodiment, described borehole stressmeter 5 and described signals collecting station 6 connection line are against described non-back production side
3 arrangements, and use casing protection.
In other embodiments, the described lateral aperture of step (a) 4 is each perpendicular to lane side, the walking of two neighboring described lateral aperture 4
It is 1m to spacing, depth difference is 0.5m.
Apply in example at other, the described lateral aperture of step (a) 4 quantity is 20, minimum-depth is 5m.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.Right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (4)
1. working face goaf side plastic zone width monitoring determination method it is characterised in that: comprise the steps:
A (), in the range of advance working face (1) 50～100m, in the non-back production side (3) of stope drift active workings (2), drills through difference
The lateral aperture (4) of depth several；
B () arranges a borehole stressmeter (5) in each described lateral aperture (4)；
C described borehole stressmeter (5) is all connected to signals collecting station (6) by (), described signals collecting station (6) is arranged in described
In stope drift active workings (2), described stope (1) 200～300m in advance；
D () is powered to described borehole stressmeter (5) and described signals collecting station (6), start to each monitoring point vertical stress
Continuously monitor；
E () pushes to adopt to during apart from described signals collecting station (6) 10～20m whne described stope (1), adopted using described signal
The stress data that collection station (6) is gathered generates stress changing curve；
F () determines stress changing curve type before and after working face pushes to adopt for each monitoring point, accordingly, determine work face goaf
(7) interior coal body width of plastic zone；
Wherein, the stress changing curve type of each monitoring point of step (f) is divided into two kinds, a kind of bent for " rising-decline-stable " type
Line (8), a kind of is " rise-stablize " type curve (9).
2. working face goaf side plastic zone width monitoring determination method according to claim 1, its feature exists
In: the described lateral aperture of step (a) (4) is each perpendicular to lane side, and the strike separation of two neighboring described lateral aperture (4) is 1m, depth
Difference is 1m.
3. working face goaf side plastic zone width monitoring determination method according to claim 1 and 2, its feature
It is: step (a) described lateral aperture (4) quantity is 10, minimum-depth is 5m.
4. working face goaf side plastic zone width monitoring determination method according to claim 3, its feature exists
In: described borehole stressmeter (5) is arranged against described non-back production side (3) with described signals collecting station (6) connection line, and with covering
Protection of pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410370533.9A CN104265364B (en) | 2014-07-31 | 2014-07-31 | Monitoring determining method for working face goaf lateral coal plastic area width |
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| CN201410370533.9A CN104265364B (en) | 2014-07-31 | 2014-07-31 | Monitoring determining method for working face goaf lateral coal plastic area width |
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| CN104265364A CN104265364A (en) | 2015-01-07 |
| CN104265364B true CN104265364B (en) | 2017-01-25 |
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| CN104931353B (en) * | 2015-07-17 | 2017-10-31 | 天地科技股份有限公司 | Coal column plastic zone method of testing and test device |
| CN108050982B (en) * | 2016-01-22 | 2019-10-18 | 山东科技大学 | A method of on-line monitoring coal body transversely deforming |
| CN109211180B (en) * | 2018-09-14 | 2021-01-26 | 华北科技学院 | Fully mechanized caving mining roadway surrounding rock deformation stage division and determination method |
| CN110630328B (en) * | 2019-08-19 | 2020-11-27 | 天地科技股份有限公司 | Method and system for measuring protective range of mining protective layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1484947A1 (en) * | 1987-04-13 | 1989-06-07 | Inst Gornogo Dela An Kazakhsk | Method of monitoring the strained-deformed state of coal bed |
| CN101526009B (en) * | 2009-04-09 | 2012-10-24 | 西安科技大学 | Wall rock destabilization acousto-optic-electric integrated monitoring system and monitoring method thereof |
| CN201486546U (en) * | 2009-09-07 | 2010-05-26 | 天地科技股份有限公司 | Mining stress monitoring system |
| CN101975065A (en) * | 2010-09-15 | 2011-02-16 | 天地科技股份有限公司 | Method for measuring mining stress of coal mine tunnel |
| CN201857953U (en) * | 2010-11-02 | 2011-06-08 | 山西潞安环保能源开发股份有限公司 | Advanced abutment pressure monitoring device on coal face |
| CN103293560B (en) * | 2013-05-17 | 2016-08-24 | 上海大屯能源股份有限公司 | A kind of method of testing adopting triple stress court |
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