CN106225973A - Protected seam stress monitoring method based on protective coat extracted and device - Google Patents
Protected seam stress monitoring method based on protective coat extracted and device Download PDFInfo
- Publication number
- CN106225973A CN106225973A CN201610819242.2A CN201610819242A CN106225973A CN 106225973 A CN106225973 A CN 106225973A CN 201610819242 A CN201610819242 A CN 201610819242A CN 106225973 A CN106225973 A CN 106225973A
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- China
- Prior art keywords
- stress
- protected seam
- protective coat
- coat extracted
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001681 protective effect Effects 0.000 title claims abstract description 29
- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims abstract description 9
- 238000007569 slipcasting Methods 0.000 claims abstract description 4
- 239000002775 capsule Substances 0.000 claims description 24
- 239000011241 protective layer Substances 0.000 claims description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 2
- 238000000418 atomic force spectrum Methods 0.000 claims 1
- -1 bed course Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
-
- 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
- E21B47/06—Measuring temperature or pressure
Landscapes
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geophysics (AREA)
- General Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of protected seam stress monitoring method based on protective coat extracted and device, first, in the middle part of earth's surface construction high inclination-angle boring to protected seam, reaming is to protected seam top board coal petrography intersection；Secondly, monitor for stress inserted at the bottom of hole and fix with fixed block, the space slip casting of fixed block upper bore is reinforced further；Again, digital display meter is also made zero by calibrating pressure sensor, applies setup pressure value by earth's surface electric hydraulic pump；Finally, drilling hole stress change in record protection layer progradation, drawing identity distance drilling horizontal distance and drilling hole stress change curve, analyze, sum up protected seam variation of stress during protective coat extracted.The present invention can catch the dynamic change of protected seam stress in time based on situ extraction condition, and simple to operate, highly sensitive, monitoring effect is good.
Description
Technical field
The present invention relates to colliery gas prevention and highlight safe Treatment process field, particularly relate to a kind of based on protective coat extracted
Protected seam stress monitoring method and device.
Background technology
" safety regulations in coal mine " clear stipulaties: " when coal and gas outburst mine working seam group, it is necessary to first exploit guarantor
Sheath.After exploitation protective layer, the region being protected in protected seam carries out mining work by without dangerous seam with potential, is not subject to
Region to protection, it is necessary to take to prevent outburst danger measure ".Exploitation protective layer is preventing and treating coal and gas prominent maximally effective
Planting regional outburst prevention measures, the projecting mine in coal seam group mining condition is widely applied.It is in the nature: protective coat extracted
Country rock release afterwards produces dilatancy, produces gas " incremental effect ", and breathability strengthens, for the pressure relief gas pumping of protected seam
Adopt and create favorable conditions.
At present in protective coat extracted correlational study, the STRESS VARIATION of more consideration overlying rock, utilize simulation softward to study
Overburden stress changes and seeks stress Evolution.And research of based on the STRESS VARIATION of protected seam own is less.As for
During protective coat extracted, how, how the dynamically change of protected seam stress monitors and the dynamic of this stress changes and protect
Relation between sheath face advanced distance and lead abutment pressure how, and current research still can not clearly be given an explaination.
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of protected seam stress monitoring method based on protective coat extracted and dress
Put, offer high inclination-angle boring based on ground, overcome protective coat extracted and cause the impact of strata movement, improve device overall steady
Qualitative.
For achieving the above object, adopt the following technical scheme that
Protected seam stress monitoring method based on protective coat extracted, comprises the following steps:
Step S1, the inclination angle that the drilling machine construction setting boring aperture sets is used before protective coat extracted on earth's surface, boring pierces
Protected seam stops construction；
Step S2, utilize rig that boring is carried out ream operation；
Step S3, protected seam monitor for stress is delivered to foot of hole and fixes with fixed block, and on fixed block
Portion's boring carries out slip casting and reinforces further；
Step S4, with the protective layer advance of the face to the horizontal range of boring as abscissa, record with monitor for stress
Force value be that vertical coordinate draws distance-pressure curve, analyze protected seam stress change during the protective layer advance of the face
Change, obtain protected seam variation of stress.
Described step S1In boring aperture be 79mm, construction inclination angle be more than 80 °.
Described step S1In, the boring offered is equidistant horizontal bore, and the preferred 5-8m of the spacing of wells, drilling hole amount are preferred
10-20.
Described step S2Middle expanding aperture to 133mm, the degree of depth reaches protected seam and top board intersection and stops reaming.
Protected seam monitor for stress based on protective coat extracted, including flexible hydraulic capsule, bed course, fixed block, pressure
Force transducer, sleeve pipe, data line, digital display meter；
The top of described flexible hydraulic capsule is installed on bed course, fixed block successively；
Described bed course is internally embedded pressure transducer；
The through hole passed for described sleeve pipe is offered in the middle part of described fixed block；
Hydralic hose and data line it is equipped with in described sleeve pipe；
Described pressure transducer is connected by the digital display meter of data line with the pressure in display flexible hydraulic capsule；
Described flexible hydraulic capsule is connected with electric hydraulic pump by hydralic hose；
Total valve, secondary valve door and check valve sequentially it is provided with on described hydralic hose.
Described flexible hydraulic capsule is cylinder, is made up of neoprene, and outer wrap has steel wire braid；
Described hydralic hose is also made up of neoprene, and outer wrap has steel wire braid.
Described bed course is the high-strength rubber having and setting thickness.
Described fixed block is round table-like stopper.
Described data line is the copper wires that outer wrap has PVC material；
Described sleeve pipe is high-strength stainless steel hollow bushing；
Described digital display meter has store-memory function.
When described monitor for stress begins to use, pressure transducer is calibrated, digital display meter is made zero, start
Electric hydraulic pump, opens total valve, secondary valve door and check valve, observes flexible hydraulic capsule pressure by digital display meter and reaches
Setting value p0；When pressure reaches setting value p0, in time setting time pressure and keep constant, show that device entirety air-tightness is good.
Protective layer face advanced distance-quilt is drawn according to the pressure change of flexible hydraulic capsule in protective layer progradation
Protective layer stress curve.
Beneficial effects of the present invention:
1. offer high inclination-angle boring based on ground, overcome protective coat extracted and cause the impact of strata movement, improve dress
Put stability in the large.
2. protected seam top offer larger aperture boring and protected seam part offer small-bore boring, it is simple to stress supervise
Survey device installation to be easier to fix.
3. use flexible hydraulic capsule monitor stress, it is possible to capture the dynamic change of stress in time, it is achieved counter stress
Monitoring in real time, highly sensitive, monitoring effect is good.
4. device overall structure operation simple, easy, low cost, have stronger practicality, be suitable for large-scale promotion.
Accompanying drawing explanation
Fig. 1 is a kind of protected seam monitor for stress overall structure schematic diagram based on protective coat extracted of the present invention.
Fig. 2 is fixed block overall structure schematic diagram in the present invention.
Fig. 3 is flexible hydraulic capsule profile in the present invention.
Wherein, 1-electric hydraulic pump, 2-total valve, 3-secondary valve door, 4-hydralic hose, 5-check valve, 6-flexible hydraulic
Capsule, 7-pressure transducer, 8-fixed block, 9-sleeve pipe, 10-data line, 11-digital display meter, 12-steel wire braid, 13-leads to
Hole, 14-holes, 15-protected seam, 16-top board, 17-bed course, 18-protective layer.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
A kind of protected seam stress monitoring method based on protective coat extracted, step is as follows:
Step S1, protective layer 18 exploits the inclination angle that the front drilling machine construction setting boring 14 apertures on earth's surface sets, boring
14 pierce protected seam 15 stops construction；
Step S2, utilize rig that boring 14 is carried out ream operation；
Step S3, deliver to protected seam monitor for stress to hole bottom 14 and fix with fixed block 8, and to fixed block
8 upper bore 14 carry out slip casting and reinforce further；
Step S4, with the protective layer advance of the face to the horizontal range of boring as abscissa, record with monitor for stress
Force value be that vertical coordinate draws distance-pressure curve, analyze protected seam stress change during the protective layer advance of the face
Change, obtain protected seam variation of stress.
Described step S1In boring 14 aperture be 79mm, construction inclination angle be more than 80 °.
Described step S1In, the boring 14 offered is equidistant horizontal bore, and the preferred 5-8m of the spacing of wells, drilling hole amount are excellent
Select 10-20.
Described step S2Middle expanding aperture to 133mm, the degree of depth reaches protected seam 15 and top board 16 intersection and stops reaming.
As Figure 1-3, a kind of protected seam stress monitoring method based on protective coat extracted by one based on protection
The protected seam monitor for stress of layer exploitation is implemented, a kind of protected seam monitor for stress based on protective coat extracted, bag
Include flexible hydraulic capsule 6, bed course 17, fixed block 8, pressure transducer 7, sleeve pipe 9, data line 10, digital display meter 11；
The top of described flexible hydraulic capsule 6 is installed on bed course 17, fixed block 8 successively；
Described bed course 17 is internally embedded pressure transducer 7；
The through hole 13 passed for described sleeve pipe is offered in the middle part of described fixed block 8；
Hydralic hose 4 and data line 10 it is equipped with in described sleeve pipe 9；
Described pressure transducer 7 is by the digital display meter 11 of data line 10 with the pressure in display flexible hydraulic capsule 6
Connect；
Described flexible hydraulic capsule 6 is connected with electric hydraulic pump 1 by hydralic hose 4；
Described flexible hydraulic capsule 6 is in cylinder, and diameter is less than bore diameter, is made up of neoprene, and outer wrap has
Steel wire braid 12；
Total valve 2, secondary valve door 3 and check valve 5 sequentially it is provided with on described hydralic hose 4；
Described hydralic hose 4 is made up of neoprene, and outer wrap has steel wire braid 12；
Described bed course 17 is the high-strength rubber having and setting thickness；
Described fixed block 8 is round table-like stopper；
Described data line 10 has the copper wires of PVC material for outer wrap；
Described sleeve pipe 9 is high-strength stainless steel hollow bushing；
Described digital display meter 11 has store-memory function.When described monitor for stress begins to use, to pressure transducer 7
Calibrate, digital display meter 11 is made zero, start electric hydraulic pump 1, open total valve 2, secondary valve door 3 and check valve 5, logical
Cross digital display meter 11 to observe flexible hydraulic capsule 6 pressure and reach setting value p0.When pressure reaches setting value p0, in time setting
Between pressure keep constant time show that device entirety air-tightness is good.
With protective layer 18 advance of the face to the horizontal range of boring 14 as abscissa, with the pressure of flexible hydraulic capsule 6
Value for vertical coordinate draw distance-pressure curve, analysis the protective layer advance of the face during protected seam STRESS VARIATION, obtain by
Protective layer variation of stress.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not the present invention is protected model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. protected seam stress monitoring method based on protective coat extracted, is characterized in that, comprise the following steps:
Step S1, on earth's surface with the inclination angle of the drilling machine construction setting setting boring aperture before protective coat extracted, pierce and protected
Stop construction；
Step S2, utilize rig that boring is carried out ream operation；
Step S3, protected seam monitor for stress is delivered to foot of hole and fixes with fixed block, and to fixed block upper bore
Carry out slip casting to reinforce further；
Step S4, with the protective layer advance of the face to boring horizontal range as abscissa, with monitor for stress record pressure
Force value is that vertical coordinate draws distance-pressure curve, analyzes protected seam STRESS VARIATION during the protective layer advance of the face, obtains
Protected seam variation of stress.
2. protected seam stress monitoring method based on protective coat extracted as claimed in claim 1, is characterized in that, described step S1
In boring aperture be 79mm, construction inclination angle be more than 80 °.
3. protected seam stress monitoring method based on protective coat extracted as claimed in claim 1, is characterized in that, described step S1
In, the boring offered is equidistant horizontal bore, the preferred 5-8m of the spacing of wells, the preferred 10-20 of drilling hole amount.
4. protected seam stress monitoring method based on protective coat extracted as claimed in claim 1, is characterized in that, described step S2
Middle expanding aperture to 133mm, the degree of depth reaches protected seam and top board intersection and stops reaming.
5. protected seam monitor for stress based on protective coat extracted, is characterized in that, including flexible hydraulic capsule, bed course, solid
Determine block, pressure transducer, sleeve pipe, data line, digital display meter；The top of described flexible hydraulic capsule be installed on successively bed course,
Fixed block；Described bed course is internally embedded pressure transducer；The through hole passed for described sleeve pipe is offered in the middle part of described fixed block；Institute
Hydralic hose and data line it is equipped with in stating sleeve pipe；Described pressure transducer is by data line and display flexible hydraulic
The digital display meter of the pressure in capsule connects；Described flexible hydraulic capsule is connected with electric hydraulic pump by hydralic hose；Described liquid
Total valve, secondary valve door and check valve sequentially it is provided with on moulding pipe.
6. protected seam monitor for stress based on protective coat extracted as claimed in claim 5, is characterized in that, described flexible hydraulic
Moulding capsule is cylinder, is made up of neoprene, and outer wrap has steel wire braid；Described hydralic hose is by neoprene system
Becoming, outer wrap has steel wire braid.
7. protected seam monitor for stress based on protective coat extracted as claimed in claim 5, is characterized in that, described bed course is
There is the high-strength rubber setting thickness.
8. protected seam monitor for stress based on protective coat extracted as claimed in claim 5, is characterized in that, described fixed block
For round table-like stopper.
9. protected seam monitor for stress based on protective coat extracted as claimed in claim 5, is characterized in that, described stress is supervised
When survey device begins to use, pressure transducer is calibrated, digital display meter is made zero, start electric hydraulic pump, open total
Valve, secondary valve door and check valve, observe flexible hydraulic capsule pressure by digital display meter and reach setting value p0；When pressure reaches
To setting value p0, in time setting time pressure and keep constant, show that device entirety air-tightness is good.
10. protected seam monitor for stress based on protective coat extracted as described in any one of claim 5-9, is characterized in that,
It is advanced into the horizontal range of boring as abscissa with protective layer, draws distance-pressure with flexible hydraulic capsule force value for vertical coordinate
Force curve, analyzes protected seam STRESS VARIATION during the protective layer advance of the face, obtains protected seam variation of stress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610819242.2A CN106225973B (en) | 2016-09-12 | 2016-09-12 | Protected seam stress monitoring method and device based on protective coat extracted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610819242.2A CN106225973B (en) | 2016-09-12 | 2016-09-12 | Protected seam stress monitoring method and device based on protective coat extracted |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106225973A true CN106225973A (en) | 2016-12-14 |
| CN106225973B CN106225973B (en) | 2017-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610819242.2A Active CN106225973B (en) | 2016-09-12 | 2016-09-12 | Protected seam stress monitoring method and device based on protective coat extracted |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489879A (en) * | 2018-11-23 | 2019-03-19 | 黑龙江科技大学 | Coal mine rock burst monitoring device and monitoring method |
| CN111305817A (en) * | 2020-03-30 | 2020-06-19 | 山西工程技术学院 | Method and device for measuring height of caving zone of fully mechanized caving face |
| CN112727453A (en) * | 2020-12-14 | 2021-04-30 | 重庆大学 | Method for measuring protection range of protected layer |
| CN113107471A (en) * | 2021-05-14 | 2021-07-13 | 中国矿业大学 | System and method for testing pre-harvest stress distribution characteristics based on capsule pressure change |
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| US4328704A (en) * | 1980-02-11 | 1982-05-11 | Orszagos Koolaj Es Gazipari Troszt | Apparatus for measuring the deformation and stress condition of the string of casing of drilled oil wells |
| CN102242629A (en) * | 2010-05-14 | 2011-11-16 | 淮南矿业(集团)有限责任公司 | Coal bed gas pressure detection system |
| CN105134194A (en) * | 2015-09-02 | 2015-12-09 | 中南大学 | Device and method for measuring crustal stress through single drill hole |
| CN105486431A (en) * | 2015-12-30 | 2016-04-13 | 山东科技大学 | Recycle type borehole stress monitoring device and monitoring method |
| CN105781606A (en) * | 2016-03-02 | 2016-07-20 | 重庆大学 | Method for sealing large-dip-angle downward coal-seam-penetrating gas extraction-drainage drill hole |
| CN105781607A (en) * | 2016-03-02 | 2016-07-20 | 重庆大学 | Method for sealing large-dip-angle downward gas pressure determination drill hole |
-
2016
- 2016-09-12 CN CN201610819242.2A patent/CN106225973B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4328704A (en) * | 1980-02-11 | 1982-05-11 | Orszagos Koolaj Es Gazipari Troszt | Apparatus for measuring the deformation and stress condition of the string of casing of drilled oil wells |
| CN102242629A (en) * | 2010-05-14 | 2011-11-16 | 淮南矿业(集团)有限责任公司 | Coal bed gas pressure detection system |
| CN105134194A (en) * | 2015-09-02 | 2015-12-09 | 中南大学 | Device and method for measuring crustal stress through single drill hole |
| CN105486431A (en) * | 2015-12-30 | 2016-04-13 | 山东科技大学 | Recycle type borehole stress monitoring device and monitoring method |
| CN105781606A (en) * | 2016-03-02 | 2016-07-20 | 重庆大学 | Method for sealing large-dip-angle downward coal-seam-penetrating gas extraction-drainage drill hole |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489879A (en) * | 2018-11-23 | 2019-03-19 | 黑龙江科技大学 | Coal mine rock burst monitoring device and monitoring method |
| CN111305817A (en) * | 2020-03-30 | 2020-06-19 | 山西工程技术学院 | Method and device for measuring height of caving zone of fully mechanized caving face |
| CN112727453A (en) * | 2020-12-14 | 2021-04-30 | 重庆大学 | Method for measuring protection range of protected layer |
| CN113107471A (en) * | 2021-05-14 | 2021-07-13 | 中国矿业大学 | System and method for testing pre-harvest stress distribution characteristics based on capsule pressure change |
| CN113107471B (en) * | 2021-05-14 | 2023-02-28 | 中国矿业大学 | System and method for testing stress distribution characteristics before mining based on capsule pressure change |
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| Publication number | Publication date |
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| CN106225973B (en) | 2017-06-23 |
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