CN106194186A - The drilling release control method of coal wall stope drift active workings advance support section deformation - Google Patents
The drilling release control method of coal wall stope drift active workings advance support section deformation Download PDFInfo
- Publication number
- CN106194186A CN106194186A CN201610529896.1A CN201610529896A CN106194186A CN 106194186 A CN106194186 A CN 106194186A CN 201610529896 A CN201610529896 A CN 201610529896A CN 106194186 A CN106194186 A CN 106194186A
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- coal
- drilling
- boring
- control method
- advance support
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- 239000003245 coal Substances 0.000 title claims abstract description 71
- 238000005553 drilling Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000003245 working effect Effects 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 238000005065 mining Methods 0.000 claims abstract description 19
- 238000010276 construction Methods 0.000 claims abstract description 10
- 201000010041 presbyopia Diseases 0.000 claims abstract description 6
- 239000011435 rock Substances 0.000 abstract description 29
- 230000000694 effects Effects 0.000 abstract description 9
- 230000003028 elevating effect Effects 0.000 description 5
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 241000264877 Hippospongia communis Species 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005728 strengthening 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
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
-
- 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
- E21B7/00—Special methods or apparatus for drilling
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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)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The drilling release control method of a kind of coal wall stope drift active workings advance support section deformation, belongs to the drilling release control method of roadway deformation.The surrounding rock of actual mining roadway that coal wall lead abutment pressure causes softens, and reduces the control effect of advance support.The feature dynamically elapsed according to stope, uses auger coal mining machine construction destressing borehole, reduces tunnel superficial part surrouding rock stress, alleviates the control difficulty that the heavily stressed softening of roadway surrounding rock brings.Technical essential: in the design three presbyopia boring of tunnel coal side, according to drift section size and coal body physical and mechanical parameter, determine level and vertical dimension between the degree of depth of boring and adjacent boring, spiral drill shearer production system is arranged in tunnel, at destressing borehole of constructing near position, the lead abutment pressure zone of influence, and with the propelling of work surface, constantly move forward drilling-production equipment.Use drilling pressure relief method to be conducive to improving the control effect of ahead work face supporting, reduce labor strength, improve working surface production efficiency.
Description
Technical field
The present invention relates to the drilling release control method of a kind of roadway deformation, particularly a kind of coal wall stope drift active workings
The drilling release control method of advance support section deformation.
Background technology
Coal wall stope drift active workings are by after lead abutment pressure effect, and country rock often produces big convergent deformation,
Affecting it normally to use, and this section of tunnel is the overlapped points of each system of working surface production, production process is many, and equipment is many, operation
Personnel are many, complex process, it is ensured that the adjoining rock stability in this tunnel, region, it is ensured that enough work spaces become Face Pressure control
Emphasis and difficult point.
At present, stope drift active workings mainly use close standing props to carry out strengthening supporting in the lead abutment pressure zone of influence, this supporting
Mode is possible to prevent back inbreak, often cannot effectively control the deformation of country rock, particularly country rock under high stress
Softening transform problem, in this case, need back production limit, limit in termination district, tunnel is carried out expand side, caunch and undercut.Pillar
Shifting set with roadway deformation after be treated as improve working face efficiency main bottleneck.
In recent years, quickly propel needs to adapt to fully-mechanized mining working, start to develop corresponding termination and advanced automatic moving type
Hydraulic support, after using self-advancing hydraulic support, in the range of making this, supporting intensity obtains raising further, and reduces workman's labor
Fatigue resistance, improves the speed of advancement of this area equipment, it is achieved that cut payroll to improve efficiency.But tunnel is enclosed by termination with advanced hydraulic support
Rock deformation bad adaptability, bigger roadway deformation will affect the normal passage of support, and then affect the normal production of work surface.
The deformation of the surrounding rock in tunnel that the lead abutment pressure that has its source in of ahead work face support issues causes, current solution
Method is by improving supporting intensity to adapt to heavily stressed host rock environment, but cannot effectively control weak surrounding rock and heavily stressed lead
The country rock softening transform caused.If taking certain technological means, reducing the stress level in this region country rock, or controlling a pressure-bearing
Power increase degree, will fundamentally solve corresponding ore deposit pressure control problem.
The country rock pressure relief method being applicable to stope drift active workings at present has two kinds, including fluting release and standing release.Right
In fluting release, there is no facility of suitably slotting at present, conventional rows of large diameter borehole substitutes.Due to bore mode in a row
Mostly being difficult to form continuous release drainage, the stress formed between hole is concentrated, and have impact on the surrouding rock stress transfer to deep.Actual application
In, carry out restricted explosion sometimes with boring end pot hole blasting method, forms that one continuous print is loose, crushed zone, a pressure-bearing will be propped up
Power peak value transfers to country rock deep, forms standing release.The major issue becoming row hole drilling release is highdensity brill
In the construction of hole, frequent mobile drill, labor intensity is big, and efficiency is low.When using explosion to carry out assisting release, except blasting activities itself
Safety problem outside, country rock dilatation dilatancy can be made to significantly increase, increase tunnel convergent deformation.
Auger coal mining machine applies to a kind of coal excavation apparatus of thin seam mining condition, it is adaptable to yield is less, especially
It it is the exploitation of ultra-thin coal seam in Aged mine.Auger coal mining machine can get out continuous drilling hole simultaneously, forms a sipes, from
So define the pressure relief groove with release effect.And auger coal mining machine has supporting walking mechanism and transportation system, machine
Tool level is high, and labor intensity is low, rapidly and efficiently can construct for release, adapt to lead abutment pressure and looked unfamiliar with work
Produce the feature of dynamic reach, advanced section roadway surrounding rock can be carried out again effective release, reduce surrouding rock deformation, reduce termination and surpass
Proparea labor strength, improves the production efficiency of whole work surface.
Summary of the invention
The invention aims to provide the drilling of a kind of coal wall stope drift active workings advance support section deformation to unload voltage-controlled
Method processed, it is achieved advanced section roadway surrounding rock carries out effective release, reduces surrouding rock deformation, reduces termination and advanced district workman work
Intensity, improves the production efficiency of whole work surface.
The object of the present invention is achieved like this: this drilling pressure relief method is at the design three presbyopia boring of tunnel coal side, root
According to drift section size and coal body physical and mechanical parameter, determine level and vertical dimension, lane between the degree of depth of boring and adjacent boring
Spiral drill shearer production system is arranged, at destressing borehole of constructing near position, the lead abutment pressure zone of influence, and with work in road
The propelling in face, constantly move forward drilling-production equipment；
Specifically comprise the following steps that
A, outside the lead abutment pressure zone of influence, coal wall, along tunnel coal side to coal body internal drilling, utilize advanced
Coal body after drilling is loosened by bearing capacity；
B, employing auger coal mining machine construction working face stope drift active workings advance support section destressing borehole；
C, destressing borehole use three flower hole arrangements.
The described destressing borehole degree of depth is not less than 15m.
Between adjacent boring, vertical dimension is more than with the ratio of horizontal rangeWhereinInternal friction for coal body
Angle.
Beneficial effect and advantage: according to the working environment of coal wall lead abutment pressure zone of influence release engineering, give
Go out to use auger coal mining machine to carry out the technical method of drilling release, meet work surface and constantly advance needs.Three presbyopia are used to unload
The layout of pressure boring and form of construction work, and according to the failure by shear intensity of coal body, determine the relative location parameter between drilling hole, carry
The concentrated stress fracturing effect to roadway's sides coal body after high drilling.
The region of high stress is made to shift to country rock deep by release, it is possible to decrease or eliminate the heavily stressed surrounding rock of actual mining roadway caused
Softening transform, improve stope advance support technique effect.Auger coal mining machine drilling can get out brill continuously simultaneously
Adopting hole, can be formed with the sipes of beneficially surrouding rock deformation release, drilling Mechanization Level is high, and labor intensity is low, and adapts to back production
The feature that working surface production dynamically moves forward.Boring uses three presbyopia to arrange, the beneficially failure by shear of coal body between hole increases country rock
Loosening deformation, improve release effect.
Accompanying drawing explanation
Fig. 1 is the coal wall advance support section drilling release horizontal layout schematic diagram of the present invention
Fig. 2 is that the coal wall advance support section drilling destressing borehole of the present invention arranges schematic diagram.
In figure: 1, coal-face；2, stope drift active workings；3, goaf；4, boring；5, drilling depth；6, spiral drill shearer
Machine；7, drag conveyor；8, elevating conveyor；9, conveying coal equipment；10, coal seam；11, top board；12, base plate；13, head-room；14, hole
Between horizontal range；15, vertical dimension between hole.
Detailed description of the invention
This drilling pressure relief method is the boring arranged in tunnel coal side design three presbyopia, according to drift section size and coal body
Physical and mechanical parameter, determines level and vertical dimension between the degree of depth of boring and adjacent boring, arranges that spiral drill shearer is raw in tunnel
Product system, at destressing borehole of constructing near position, the lead abutment pressure zone of influence, and with the propelling of work surface, constantly move forward drilling
Equipment；
Specifically comprise the following steps that
A, outside the lead abutment pressure zone of influence, coal wall, along tunnel coal side to coal body internal drilling, utilize advanced
Coal body after drilling is loosened by bearing capacity；
B, employing auger coal mining machine construction working face stope drift active workings advance support section destressing borehole；
C, destressing borehole use three flower hole arrangements.
The described destressing borehole degree of depth is not less than 15m.
Between adjacent boring, vertical dimension is more than with the ratio of horizontal rangeWhereinInternal friction for coal body
Angle.
Below in conjunction with the accompanying drawings the implementation process of the present invention is described further:
Embodiment 1: the drilling release control method of coal wall of the present invention stope drift active workings advance support section deformation, implements
Process mainly includes three aspects: the design of drilling parameter, drilling system designs the type selecting with equipment, and drilling technological design
With construction.
The design of drilling parameter: according to coal seam 10 condition and tunnel 2 design parameter, determine degree of depth d 5 of boring 4, boring
Horizontal range w 14 and boring between vertical dimension h 15.
The design of drilling system and the type selecting of equipment: according to tunnel 2 cross dimensions and base plate 12 condition, determine the fortune coal of drilling
The parameter of the equipment such as system composition and auger coal mining machine 6, drag conveyor 7 and elevating conveyor 9 and model.
Drilling technological design and construction: design the layout of each production equipment, the coordinating and the edge of production system of production link
The passage process forward in tunnel.
The drilling release control method concrete operation step of coal wall of the present invention stope drift active workings advance support section deformation
As follows:
First have to according to heading sizes, it is desirable to drilling depth 5 is general at more than 15m, according to head-room, it is desirable to boring height
Degree 16 meets with head-room 13Horizontal range 14 and vertical dimension 15 examination between boring meetWherein,Internal friction angle for rock mass.
Select to meet the auger coal mining machine 6 of bore size requirement, select and scraping that auger machine-made egg-shaped or honey-comb coal briquets function power matches
Plate conveyer 7 and elevating conveyor 8, it is desirable to drag conveyor and elevating conveyor transport capacity are more than the 1.2 of spiral drill shearer drilling ability
Times.Assistant conveyance uses the mine of railless free-wheeled vehicle, and conveying coal equipment 9 can be selected for shuttle vehicle coal conveying, during other assistant conveyance mode, and fortune
Coal equipment 9 selects belt conveyer, when selecting belt conveyer, it is desirable to its transport capacity is more than auger coal mining machine drilling ability
1.2 times.
Drilling construction is placed in beyond lead abutment pressure coverage, and equipment is arranged after putting in place, auger coal mining machine water
Flat drill is adopted, drill bit coal cutting, and auger stem draws coal, and coal is directly loadable into drag conveyor after going out boring, proceeds to elevating conveyor, loads fortune coal
Shuttle car or belt conveyor.When drilling is to projected depth 5, exiting drilling rod, auger coal mining machine integral forward lead, reach distance is for setting
Horizontal range 14 between meter hole.After rig moves on to position, adjusting drill height, making vertical dimension between boring is design load 15, under starting
One circulation drilling.With the propelling of work surface 1, boring mining roadway and enter under lead abutment pressure effect, tunnel superficial part country rock is because boring
Adopt and be prone to loose damage, cause supporting pressure increased area and shift to coal body deep, thus reduce roadway convergence deformation, for work
Normal production in face provides enough work spaces.
Embodiment of the present invention described in detail above, in addition to the explanation indicated in figure, rock mass internal friction described in scheme
Angle, assistant conveyance, railless free-wheeled vehicle, belt conveyer and supporting pressure increased area etc. are concept commonly used in the art and equipment, institute
State specific implementation process must be understood by the person skilled in the art.The above is the detailed description of the invention of the present invention and is transported
Know-why, its embody use release principle control coal wall stope drift active workings advance support section surrouding rock deformation skill
Within art thought falls within scope.
Claims (3)
1. a drilling release control method for coal wall stope drift active workings advance support section deformation, is characterized in that: this drilling
Release control method is in the design three presbyopia boring of tunnel coal side, according to drift section size and coal body physical and mechanical parameter, really
Level and vertical dimension between the degree of depth of fixed boring and adjacent boring, arrange spiral drill shearer production system in tunnel, near super
Position, front abutment pressure zone of influence construction destressing borehole, and with the propelling of work surface, constantly move forward drilling-production equipment；
Specifically comprise the following steps that
A, outside the lead abutment pressure zone of influence, coal wall, along tunnel coal side to coal body internal drilling, utilize advanced pressure-bearing
Coal body after drilling is loosened by power；
B, employing auger coal mining machine construction working face stope drift active workings advance support section destressing borehole；
C, destressing borehole use three flower hole arrangements.
The drilling release control method of coal wall the most according to claim 1 stope drift active workings advance support section deformation,
It is characterized in that: the destressing borehole degree of depth is not less than 15m.
The drilling release control method of coal wall the most according to claim 1 stope drift active workings advance support section deformation,
It is characterized in that: between adjacent boring, vertical dimension is more than with the ratio of horizontal rangeWhereinInternal friction for coal body
Angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529896.1A CN106194186A (en) | 2016-07-06 | 2016-07-06 | The drilling release control method of coal wall stope drift active workings advance support section deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610529896.1A CN106194186A (en) | 2016-07-06 | 2016-07-06 | The drilling release control method of coal wall stope drift active workings advance support section deformation |
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| CN106194186A true CN106194186A (en) | 2016-12-07 |
Family
ID=57472437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610529896.1A Pending CN106194186A (en) | 2016-07-06 | 2016-07-06 | The drilling release control method of coal wall stope drift active workings advance support section deformation |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930691A (en) * | 2017-04-25 | 2017-07-07 | 山东科技大学 | A kind of drilling construction method in driving along next gob unloading blast hole |
| WO2019170043A1 (en) * | 2018-07-10 | 2019-09-12 | 山东科技大学 | Target bearing pressure-based pressure relief drill hole interval determination method |
| CN111441817A (en) * | 2020-04-02 | 2020-07-24 | 中国矿业大学 | Method for reinforcing gas extraction by synergistic effect of coal seam drilling jet fracturing and mining pressure |
| CN112360470A (en) * | 2020-10-28 | 2021-02-12 | 中煤科工开采研究院有限公司 | Construction method for improving stress environment of advanced support pressure section of mining roadway |
| CN114893127A (en) * | 2022-07-14 | 2022-08-12 | 陕西太合工程技术服务有限责任公司 | Directional hydraulic drilling and mining integrated mining device and method for thin coal seam |
| CN115977637A (en) * | 2023-03-01 | 2023-04-18 | 中国矿业大学(北京) | Continuous pressure relief system and method for interior of surrounding rock of continuous large-deformation roadway |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930691A (en) * | 2017-04-25 | 2017-07-07 | 山东科技大学 | A kind of drilling construction method in driving along next gob unloading blast hole |
| WO2019170043A1 (en) * | 2018-07-10 | 2019-09-12 | 山东科技大学 | Target bearing pressure-based pressure relief drill hole interval determination method |
| CN111441817A (en) * | 2020-04-02 | 2020-07-24 | 中国矿业大学 | Method for reinforcing gas extraction by synergistic effect of coal seam drilling jet fracturing and mining pressure |
| CN112360470A (en) * | 2020-10-28 | 2021-02-12 | 中煤科工开采研究院有限公司 | Construction method for improving stress environment of advanced support pressure section of mining roadway |
| CN114893127A (en) * | 2022-07-14 | 2022-08-12 | 陕西太合工程技术服务有限责任公司 | Directional hydraulic drilling and mining integrated mining device and method for thin coal seam |
| CN115977637A (en) * | 2023-03-01 | 2023-04-18 | 中国矿业大学(北京) | Continuous pressure relief system and method for interior of surrounding rock of continuous large-deformation roadway |
| CN115977637B (en) * | 2023-03-01 | 2023-08-08 | 中国矿业大学(北京) | Continuous pressure relief system and method for interior of surrounding rock of continuous large-deformation roadway |
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Application publication date: 20161207 |