CN106545296A - A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage - Google Patents
A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage Download PDFInfo
- Publication number
- CN106545296A CN106545296A CN201611094041.7A CN201611094041A CN106545296A CN 106545296 A CN106545296 A CN 106545296A CN 201611094041 A CN201611094041 A CN 201611094041A CN 106545296 A CN106545296 A CN 106545296A
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- drilling
- concordant
- base plate
- coal seam
- treatment method
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
Abstract
The invention discloses a kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage, drilling vertical section is formed including ground vertical drilling hole, the vertical tomography of communication and the drilling concordant section in fold axle portion crack that drilling vertical section to concordant tailing edge concordant is crept into, the concordant section that wherein drills is vertical with maximum horizontal principal stress, fills the doubtful EXIT POINT of seat earth limestone by bored grouting；Using technical scheme, surface orientation concordant inlet well is vertical with maximum horizontal principal stress to tomography and fold axle portion, for the thin limestone slip casting target zone of the great fracture hole type base plate of horizontal and vertical water guide difference, more tomography and fold axle portion crack can then be linked up along vertical crack tendency drilling and more preferable dilation angle is obtained, grouting serous fluid utilization rate is high under high pressure；The scope of serosity diffusion is big, it is ensured that larger crack can be tamped, and can effectively change the physico-mechanical properties of floor strata, improve its intensity and water isolating, effectively prevent gushing water after reinforcing.
Description
Technical field
The invention belongs to coal mining field, it is more particularly related to a kind of deep mining coal seam base plate limestone water damage
Surface drilling grouting treatment method.
Background technology
In process of coal mining, tomography and both sides often association, derivative structures cranny development are often identical with fault strike,
Tectonic faults are formed, water conductive fault band is not only conduit pipe, or collection gallery, links up upper and lower water-bearing layer, and water yield is big
And it is stable；Stratum is formed in Folding Process under horizontal stress effect, and association and derivation series of secondary are constructed, and with joint, are split
Based on reason construction, both wings bedding joint development as strong interlayer shear is acted on, by extension with Zhang Jie on the outside of turn end
Based on reason, core portion receives strong squeezing action, axial plane cleavage development, three grey solution crack of seat earth Taiyuan Forma-tion, fissure zone, Fault water channeling
Band, water enrichment area and special vertical permeable structure region, especially vertical water conductive fault and fold axle portion crack are even more coal seam
The emphasis that base plate water damage occurs, the region has direct water conservancy to contact with ash difficult to understand downwards, receives a large amount of supplies of Ordovician karst water, upwards
High hydraulic pressure, it is strong it is aqueous threaten coal seam adopt rupture base plate, prior art is utilized in bored grouting improvement in coal cutting roadway,
This administration way is directly carried out in down-hole, and the process of drilling this may result in the generation of retention of excessive fluid accident, down-hole drilling note
Starch as common pressure grouting, serosity diffusion is limited in scope, it is difficult to ensure that larger crack can be tamped.
The content of the invention
It is big that the technical problem to be solved is to provide a kind of scope of serosity diffusion, it is ensured that larger crack can be filled out
The surface drilling grouting treatment method of real deep mining coal seam base plate limestone water damage.
To achieve these goals, the technical scheme taken of the present invention is：A kind of deep mining coal seam base plate limestone for being provided
The surface drilling grouting treatment method of water damage, including ground vertical drilling hole formation drilling vertical section, drilling vertical section is to concordant
Along the vertical tomography of communication and the drilling concordant section in fold axle portion crack of concordant drilling, wherein drilling concordant section and maximum horizontal master
Stress is vertical, fills the doubtful EXIT POINT of seat earth limestone by bored grouting.
A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage disclosed by the invention, drill concordant section
It is arranged on three ash middle parts so that the nearly horizontal drilling of concordant is contacted with more interlayer structure faces；Wherein drilling is additionally provided with multiple points
Zhi Kong, branched hole and tomography, fold axle portion trace intersect vertically and pass through tomography and fold, wherein, branched hole one end with drill
At drilling vertical section, the other end creeps into concordant section along concordant.
A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage disclosed by the invention, branch's pitch of holes
≤ 2 times of grout spreading ranges, pitch of holes>Single hole slip casting range of scatter.
The surface drilling grouting treatment method of a kind of deep mining coal seam base plate limestone water damage disclosed by the invention, between branched hole hole
Away from for 50～110m.
A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage disclosed by the invention, bored grouting is
By surface drilling using pressurization injection cement grout to the concordant section that drills, serosity diffuses to tomography, pleated portions along concordant.
A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage disclosed by the invention, slurry pressure is
During≤4MPa, serosity is 11～14m along concordant dilation angle, the natural fissure in main filling water-bearing layer, while slip casting section local
To three grey top board diffusions.
A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage disclosed by the invention, drilling wear disconnected
Layer, serosity are 58～65m along the distance that tomography spreads.
A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage disclosed by the invention, slurry pressure is
4～8MPa, serosity are 28～35m along concordant dilation angle.
A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage disclosed by the invention, slurry pressure 8
～10MPa, forms filling crack, the direction of crack initiation direction and larger principal stress along there is splitting on principal stress plane
Unanimously, grout spreading range is 48～50m.
A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage disclosed by the invention, slurry pressure is
The crack that 10～12MPa, original crack and splitting are formed is become closely knit by serosity filling fully filling, and grout spreading range is big
About 54～58m.
Serosity just can spread 300～350m under low-pressure effect, and impact of the grouting pressure to grout spreading range is failed to understand
It is aobvious, but with the increase with injected hole distance, slurry flow is gradually reduced, when crushed zone is medium permeable, grout spreading range
Increase with the increase of grouting pressure, when grouting pressure reaches 8～10MPa, diffusion length is up to 100～150m；Low note
Slurry pressure grout spreading range is less, when grouting pressure reaches 10MPa, dilation angle about 50m；Final grouting pressure be 10～
During 12MPa, the diffusion length of serosity changes less, about 50～55m；With the increase of pressure, water-bearing layer weak part
Stress is overcome with tensile strength, along on principal stress plane occur splitting formed filling crack, crack initiation direction with compared with
The direction of big principal stress is unanimous on the whole.With the filling of serosity, water-bearing layer is further reinforced, grout spreading range about 50m；
When slurry pressure increases to 12MPa, the crack that original crack and splitting are formed is filled into the sufficient degree of comparison by serosity, with
The rising of pressure, filling becomes closely knit, and dilation angle is not dramatically increased, grout spreading range about 55m；With pressure
Constantly lifted, the diffusion length of serosity gradually increases, while under grouting pressure effect, weak structural face starts expansion, especially
It is aspect, shear-zone and the two contact band.
Using technical scheme, surface orientation concordant inlet well to tomography and fold axle portion and maximum horizontal master
Stress is vertical, for the thin limestone slip casting target zone of the great fracture hole type base plate of horizontal and vertical water guide difference, splits along vertical
Gap tendency drilling can then be linked up more tomography and fold axle portion crack and obtain more preferable dilation angle；Drilling horizontal section rail
Wide-angle of mark trying one's best is intersected with tomography and fold axle portion crack, and the thin limestone of seat earth is ruptured with vertical water guide, crack is to coal seam
Safe working affects maximum, then with surface orientation concordant inlet well, wide-angle links up multiple fractures in the horizontal is that main advantage is bored
Enter orientation, so as to reach the slip casting purpose of blocking conduit pipe, transformation seat earth；Surface orientation concordant drilling, grouting and reinforcing
Thin layer limestone, the method drill into target water-bearing layer tailing edge thin layer limestone concordant drilling, to three by applying brill place on ground
Grey water-bearing layer carries out routinely drilling under grout transformation, and surge well and Geophysical Anomalies area and the benefit brill slip casting of structurally fractured zone emphasis is added
Gu；For preventing and treating the strong aqueous karst water harm of the high pressure-bearing of base plate, the strengthening stratum property noted is strong, and serosity large area can expand in the earth formation
Dissipate, the not running pulp under the conditions of high-pressure slip-casting, serosity utilization rate are high；The scope of serosity diffusion is big, it is ensured that larger crack can be tamped,
The physico-mechanical properties of floor strata can effectively be changed after reinforcing, its intensity and water isolating is improved, effectively prevented gushing water；Note
Slurry is reinforced thin layer limestone aquifer and can directly fill thin layer the limestone karst cracks, fundamentally administers thin layer limestone gushing water.
Below with reference to embodiment, the present invention is described in detail.
Description of the drawings
Below the content and the labelling in figure expressed by each width accompanying drawing of this specification is briefly described：
Fig. 1 be a kind of surface drilling grouting treatment method bore direction of deep mining coal seam base plate limestone water damage of the present invention with it is disconnected
The different angle of cut slip casting effect schematic diagrams of layer.
Fig. 2 be a kind of surface drilling grouting treatment method bore direction of deep mining coal seam base plate limestone water damage of the present invention with it is disconnected
The different angle of cut slip casting effect schematic diagrams of layer.
Specific embodiment
Below by the description to embodiment, the shape of each component to the specific embodiment of the present invention as involved by,
Construction, the mutual alignment between each several part and annexation, the effect of each several part and operation principle, manufacturing process and operate with
Method etc., is described in further detail, to help those skilled in the art to have inventive concept of the invention, technical scheme
More complete, accurate and deep understanding.
Embodiment 1
A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage of the present invention, including ground vertical drilling hole
Drilling vertical section is formed, the drilling of the vertical tomography of communication and fold axle portion crack that vertical section to the concordant tailing edge concordant that drills is crept into
Concordant section, wherein drilling concordant section it is vertical with maximum horizontal principal stress, by bored grouting filling seat earth limestone it is doubtful go out
Water spot；Drilling concordant section is arranged on three ash middle parts so that the nearly horizontal drilling of concordant is contacted with more interlayer structure faces；Wherein bore
Hole is additionally provided with multiple branched holes, and branched hole is intersected vertically and passes through tomography and fold with tomography, fold axle portion trace, wherein, point
Hole one end is propped up with drilling concordant section at drilling vertical section, the other end is along concordant drilling；Branch's pitch of holes≤2 times serosity diffusion
Radius, pitch of holes>Single hole slip casting range of scatter；Bored grouting is to drilling by surface drilling using pressurization injection cement grout
Concordant section, serosity diffuse to tomography, pleated portions along concordant.
When slurry pressure is 4MPa, serosity is 14m along concordant dilation angle, the natural fissure in main filling water-bearing layer, together
When slip casting section local to three grey top boards diffusions.
Serosity just can spread 300～350m under low-pressure effect, and impact of the grouting pressure to grout spreading range is failed to understand
It is aobvious, but with the increase with injected hole distance, slurry flow is gradually reduced, when crushed zone is medium permeable, grout spreading range
Increase with the increase of grouting pressure.
Embodiment 2
Fig. 1, Fig. 2 are respectively a kind of showing for surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage of the invention
It is intended to；A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage of the invention as depicted, drilling wear disconnected
Layer, serosity are 60m along the distance that tomography spreads.
Embodiment 3
Slurry pressure is 8MPa, and serosity is 35m along concordant dilation angle.
When grouting pressure reaches 8～10MPa, diffusion length is up to 100～150m；Low grouting pressure grout spreading range
It is less, when grouting pressure reaches 10MPa, dilation angle about 50m.
Embodiment 4
Slurry pressure 10MPa, along on principal stress plane occur splitting formed filling crack, crack initiation direction with compared with
The direction of big principal stress is consistent, and grout spreading range is 50m.
Embodiment 5
Slurry pressure is 10～12MPa, and the crack that original crack and splitting are formed is become by serosity filling fully filling
It is closely knit, grout spreading range about 54～58m.
When final grouting pressure is 10～12MPa, the diffusion length of serosity changes less, about 50～55m；With pressure
Increasing, stress and the tensile strength of water-bearing layer weak part are overcome, being formed along there is splitting on principal stress plane
Filling crack, crack initiation direction are unanimous on the whole with the direction of larger principal stress.With the filling of serosity, water-bearing layer is further added
Gu, grout spreading range about 50m；When slurry pressure increases to 12MPa, the crack that original crack and splitting are formed is by serosity
The sufficient degree of comparison is filled into, as the rising of pressure, filling become closely knit, dilation angle is not dramatically increased, and serosity expands
Scattered radius about 55m；With the continuous lifting of pressure, the diffusion length of serosity gradually increases, while under grouting pressure effect,
Weak structural face starts expansion, especially aspect, shear-zone and the two contact band.
Using technical scheme, surface orientation concordant inlet well to tomography and fold axle portion and maximum horizontal master
Stress is vertical, for the thin limestone slip casting target zone of the great fracture hole type base plate of horizontal and vertical water guide difference, splits along vertical
Gap tendency drilling can then be linked up more tomography and fold axle portion crack and obtain more preferable dilation angle；Drilling horizontal section rail
Wide-angle of mark trying one's best is intersected with tomography and fold axle portion crack, and the thin limestone of seat earth is ruptured with vertical water guide, crack is to coal seam
Safe working affects maximum, then with surface orientation concordant inlet well, wide-angle links up multiple fractures in the horizontal is that main advantage is bored
Enter orientation, so as to reach the slip casting purpose of blocking conduit pipe, transformation seat earth；Surface orientation concordant drilling, grouting and reinforcing
Thin layer limestone, the method drill into target water-bearing layer tailing edge thin layer limestone concordant drilling, to three by applying brill place on ground
Grey water-bearing layer carries out routinely drilling under grout transformation, and surge well and Geophysical Anomalies area and the benefit brill slip casting of structurally fractured zone emphasis is added
Gu；For preventing and treating the strong aqueous karst water harm of the high pressure-bearing of base plate, the strengthening stratum property noted is strong, and serosity large area can expand in the earth formation
Dissipate, the not running pulp under the conditions of high-pressure slip-casting, serosity utilization rate are high；The scope of serosity diffusion is big, it is ensured that larger crack can be tamped,
The physico-mechanical properties of floor strata can effectively be changed after reinforcing, its intensity and water isolating is improved, effectively prevented gushing water；Note
Slurry is reinforced thin layer limestone aquifer and can directly fill thin layer the limestone karst cracks, fundamentally administers thin layer limestone gushing water.
The present invention is exemplarily described above in conjunction with embodiment, it is clear that the present invention is implemented
The restriction of formula, if the improvement of the various unsubstantialities that method of the present invention design and technical scheme are carried out is employed, or without
Improve and the design of the present invention and technical scheme are directly applied to into other occasions, within protection scope of the present invention.
Claims (10)
1. a kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage, it is characterised in that：It is vertical including ground
Drilling forms drilling vertical section, what vertical section to the concordant tailing edge concordant that drills creep into link up vertical tomography and fold axle portion crack
Drilling concordant section, wherein drilling concordant section is vertical with maximum horizontal principal stress, fills seat earth limestone by bored grouting and doubts
Like EXIT POINT.
2., according to the surface drilling grouting treatment method of a kind of deep mining coal seam base plate limestone water damage described in claim 1, which is special
Levy and be：Described drilling concordant section is arranged on three ash middle parts, wherein drilling is additionally provided with multiple branched holes, branched hole and tomography,
Fold axle portion trace intersects vertically and passes through tomography and fold, wherein, branched hole one end is vertical near drilling with drilling concordant section
At section, the other end is crept into along concordant.
3., according to the surface drilling grouting treatment method of a kind of deep mining coal seam base plate limestone water damage described in claim 2, which is special
Levy and be：Described branch's pitch of holes≤2 times grout spreading range, pitch of holes>Single hole slip casting range of scatter.
4. according to the surface drilling grouting treatment method of a kind of deep mining coal seam base plate limestone water damage described in Claims 2 or 3, its
It is characterised by：Described branched hole pitch of holes is 50～110m.
5., according to the surface drilling grouting treatment method of a kind of deep mining coal seam base plate limestone water damage described in claim 1, which is special
Levy and be：Described bored grouting is that serosity is along suitable to the concordant section that drills by surface drilling using pressurization injection cement grout
Layer diffuses to tomography, pleated portions.
6., according to the surface drilling grouting treatment method of a kind of deep mining coal seam base plate limestone water damage described in claim 5, which is special
Levy and be：Described slurry pressure for≤4MPa when, serosity is 11～14m along concordant dilation angle.
7., according to the surface drilling grouting treatment method of a kind of deep mining coal seam base plate limestone water damage described in claim 5, which is special
Levy and be：Tomography is worn in described drilling, and serosity is 58～65m along the distance that tomography spreads.
8., according to the surface drilling grouting treatment method of a kind of deep mining coal seam base plate limestone water damage described in claim 5, which is special
Levy and be：Described slurry pressure is 4～8MPa, and serosity is 28～35m along concordant dilation angle.
9., according to the surface drilling grouting treatment method of a kind of deep mining coal seam base plate limestone water damage described in claim 5, which is special
Levy and be：Described 8～10MPa of slurry pressure, forms filling crack, crack initiation along there is splitting on principal stress plane
Direction is consistent with the direction of larger principal stress, and grout spreading range is 48～50m.
10., according to the surface drilling grouting treatment method of a kind of deep mining coal seam base plate limestone water damage described in claim 5, which is special
Levy and be：Described slurry pressure is 10～12MPa, and the crack that original crack and splitting are formed fully is filled by serosity filling
Become closely knit, grout spreading range about 54～58m.
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| CN201611094041.7A CN106545296A (en) | 2016-12-02 | 2016-12-02 | A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage |
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| CN201611094041.7A CN106545296A (en) | 2016-12-02 | 2016-12-02 | A kind of surface drilling grouting treatment method of deep mining coal seam base plate limestone water damage |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907152A (en) * | 2017-04-06 | 2017-06-30 | 安徽理工大学 | A kind of soil type inlet well arrangement and grouting method |
| CN107035339A (en) * | 2017-06-14 | 2017-08-11 | 淮南矿业(集团)有限责任公司 | A kind of method of utilization high pressure chemistry slurry injection technique closure limestone drilling |
| CN107313743A (en) * | 2017-07-04 | 2017-11-03 | 山西晋城无烟煤矿业集团有限责任公司 | One kind is using coal bed gas well to seat earth water barrier weak area band method for repairing and mending |
| CN107740701A (en) * | 2017-11-27 | 2018-02-27 | 山东省邱集煤矿 | A kind of method of the accurate grout transformation of top plate thin layer limestone aquifer |
| CN107956467A (en) * | 2017-11-20 | 2018-04-24 | 中国矿业大学(北京) | A kind of high seam pre-draining borehole parameter optimization and the method for extracting result assessment |
| CN108412453A (en) * | 2018-04-24 | 2018-08-17 | 淮南矿业(集团)有限责任公司 | A kind of coal mining water controls system and construction method altogether with gas |
| CN110344850A (en) * | 2019-08-09 | 2019-10-18 | 中煤新集能源股份有限公司 | A kind of seam mining bottom plate limestone water control method |
| CN110565493A (en) * | 2019-08-29 | 2019-12-13 | 河南省收费还贷高速公路管理有限公司航空港分公司 | highway subgrade disease treatment method |
| CN113107423A (en) * | 2021-04-13 | 2021-07-13 | 宿州学院 | Coal field bottom plate grouting control method based on water-soluble fluorescent agent |
| CN113339058A (en) * | 2021-06-24 | 2021-09-03 | 中国矿业大学 | Fluidized gangue layer adjacent surface subsequent filling system and method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907152A (en) * | 2017-04-06 | 2017-06-30 | 安徽理工大学 | A kind of soil type inlet well arrangement and grouting method |
| CN106907152B (en) * | 2017-04-06 | 2019-01-25 | 安徽理工大学 | A kind of soil type inlet well arrangement and grouting method |
| CN107035339B (en) * | 2017-06-14 | 2019-12-10 | 淮南矿业(集团)有限责任公司 | Method for plugging limestone drill hole by using high-pressure chemical grouting technology |
| CN107035339A (en) * | 2017-06-14 | 2017-08-11 | 淮南矿业(集团)有限责任公司 | A kind of method of utilization high pressure chemistry slurry injection technique closure limestone drilling |
| CN107313743A (en) * | 2017-07-04 | 2017-11-03 | 山西晋城无烟煤矿业集团有限责任公司 | One kind is using coal bed gas well to seat earth water barrier weak area band method for repairing and mending |
| CN107313743B (en) * | 2017-07-04 | 2020-05-12 | 山西晋城无烟煤矿业集团有限责任公司 | Method for repairing weak zone of coal seam floor water-resisting layer by utilizing coal seam gas well |
| CN107956467A (en) * | 2017-11-20 | 2018-04-24 | 中国矿业大学(北京) | A kind of high seam pre-draining borehole parameter optimization and the method for extracting result assessment |
| CN107740701A (en) * | 2017-11-27 | 2018-02-27 | 山东省邱集煤矿 | A kind of method of the accurate grout transformation of top plate thin layer limestone aquifer |
| CN108412453A (en) * | 2018-04-24 | 2018-08-17 | 淮南矿业(集团)有限责任公司 | A kind of coal mining water controls system and construction method altogether with gas |
| CN110344850A (en) * | 2019-08-09 | 2019-10-18 | 中煤新集能源股份有限公司 | A kind of seam mining bottom plate limestone water control method |
| CN110565493A (en) * | 2019-08-29 | 2019-12-13 | 河南省收费还贷高速公路管理有限公司航空港分公司 | highway subgrade disease treatment method |
| CN110565493B (en) * | 2019-08-29 | 2021-12-31 | 河南省收费还贷高速公路管理有限公司航空港分公司 | Highway subgrade disease treatment method |
| CN113107423A (en) * | 2021-04-13 | 2021-07-13 | 宿州学院 | Coal field bottom plate grouting control method based on water-soluble fluorescent agent |
| CN113339058A (en) * | 2021-06-24 | 2021-09-03 | 中国矿业大学 | Fluidized gangue layer adjacent surface subsequent filling system and method |
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Inventor after: Ni Jianming Inventor after: Zheng Shitian Inventor after: Wang Dashe Inventor after: Shi Zhiyuan Inventor after: Nie Feng Inventor after: Wang Yuhang Inventor after: Yang Jian Inventor before: Ni Jianming Inventor before: Zheng Shitian Inventor before: Wang Dashe Inventor before: Shi Zhiyuan Inventor before: Nie Feng Inventor before: Wang Yuhang |
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Application publication date: 20170329 |