CN108150175A - Shaft of vertical well passes through the supporting construction of the old dead zone in coal seam - Google Patents
Shaft of vertical well passes through the supporting construction of the old dead zone in coal seam Download PDFInfo
- Publication number
- CN108150175A CN108150175A CN201810006170.9A CN201810006170A CN108150175A CN 108150175 A CN108150175 A CN 108150175A CN 201810006170 A CN201810006170 A CN 201810006170A CN 108150175 A CN108150175 A CN 108150175A
- Authority
- CN
- China
- Prior art keywords
- shaft
- dead zone
- coal seam
- supporting construction
- vertical well
- Prior art date
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000003245 coal Substances 0.000 title claims abstract description 18
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000004575 stone Substances 0.000 claims abstract description 28
- 239000004567 concrete Substances 0.000 claims abstract description 18
- 239000010410 layers Substances 0.000 claims abstract description 8
- 239000011435 rock Substances 0.000 claims abstract description 8
- 239000000463 materials Substances 0.000 claims abstract description 7
- 238000007569 slipcasting Methods 0.000 claims description 5
- 230000032798 delamination Effects 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 230000003014 reinforcing Effects 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 239000008107 starch Substances 0.000 claims 1
- 239000002002 slurries Substances 0.000 abstract description 2
- 239000002131 composite materials Substances 0.000 abstract 1
- 238000010586 diagrams Methods 0.000 description 2
- 238000005516 engineering processes Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000007789 gases Substances 0.000 description 1
- 230000000505 pernicious Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000011901 water Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
Abstract
Description
Technical field
Shaft of vertical well of the present invention passes through the supporting construction of the old dead zone in coal seam, belongs to vertical support technology field.
Background technology
Existing shaft of vertical well passes through the old dead zone in coal seam, generally using drain hole draining and excludes pernicious gas, wedge of driving piles Advance support is carried out, anchor net is studied and walling crib backboard carries out gib, pouring reinforcement concrete arch carries out permanent support, simultaneously Carry out grouting behind shaft or drift lining, prevent the borehole wall from water drenching occur, but the top plate in old dead zone tunnel is not reinforced, after Shaft Linings dead zone not into Row filling causes back and two to help the phenomenon that appearance is destroyed, is caving in construction more, has made shaft of vertical well and constructed Can not be according to normal supporting in engineering, supporting is not in place, be easy to cause safety accident.
Invention content
The invention overcomes the deficiencies of the prior art, and provides being filled after a kind of Shaft Linings to shaft of vertical well, Top plate and bottom plate are reinforced, prevent back and two from helping the supporting construction destroyed, be caving.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：Shaft of vertical well passes through the old dead zone in coal seam Supporting construction, including wall seat, work stone pier, grouted anchor bar and concrete, wall seat is arranged on the stabilization rock stratum below seat earth On, work stone pier is arranged in coal seam goaf, and grouted anchor bar is disposed on roof absciss layer area, carries out bolt grouting, Shaft wall and wall seat are poured using concrete；
Work stone pier is 3m ~ 5m apart from shaft wall outer distance, and the goaf between work stone pier and shaft wall carries out Filling.
Reinforcing bar is provided in the shaft wall, the concrete Quan labels are not less than C30, the Concrete Thick It spends for 50mm.
Goaf filling between the work stone pier and shaft wall uses slabstone mortar.
Roof absciss layer area's slip casting uses high molecular bonding material.
Pre-buried drainpipe is provided between the shaft of vertical well wall seat and work stone pier.
The present invention has the advantages that compared with prior art.
The 1st, work stone pier is set in goaf, work stone pier and the borehole wall outer distance are 3 ~ 5m, while work stone pier with Borehole wall outer goaf is filled, and increases stability and safety of the tunnel in old dead zone.
2nd, grouted anchor bar is set in roof absciss layer area, to roof delamination area slip casting high molecular bonding material, increases The stability of top plate, prevents roof caving, convenient for construction, increases safety.
Description of the drawings
The present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structure diagram of wall seat.
1 it is wall seat in figure, 2 be work stone pier, 3 be grouted anchor bar, 4 be concrete, 5 be roof delamination area, 6 is mined out Area, 7 be bottom plate, 8 be stablize rock stratum, 9 be pre-buried drainpipe, 10 be slabstone mortar, 11 be shaft wall.
Specific embodiment
As shown in Figure 1 and Figure 2, shaft of vertical well of the present invention passes through the supporting construction of the old dead zone in coal seam, including wall seat 1, work stone wall Pile 2, grouted anchor bar 3 and concrete 4, wall seat 1 are arranged on the stabilization rock stratum 8 of 7 lower section of seat earth, and work stone pier 2 is arranged on In coal seam goaf 6, grouted anchor bar 3 is disposed on 5th area of roof absciss layer, carries out bolt grouting, shaft wall 11 and wall Seat 1 is poured using concrete 4, and work stone pier 2 is 3m ~ 5m apart from shaft wall outer distance, to work stone pier 2 and vertical Goaf 6 between the borehole wall 11 is filled, and reinforcing bar is provided in shaft wall 11, and the 4 Quan labels of concrete are not low In C30,4 thickness of concrete is 50mm, and the filling of goaf 6 between work stone pier 2 and shaft wall 11 uses piece Stone sand slurry 10,5 slip casting of roof absciss layer area uses high molecular bonding material, shaft of vertical well wall seat 1 and work stone pier 2 it Between be provided with pre-buried drainpipe 9.
In the use of the present invention, being symmetrical arranged wall seat 1 in stabilization rock stratum 8 below seat earth 7, wall seat 1 uses steel Reinforced concrete pours, and disclosed broken, soft coal body rock mass is taken down, and carries out gib using anchor net, carries out It constructs in next step, the setting work stone pier 2 in the goaf 6, work stone pier 2 is 3m ~ 5m apart from 11 outer of shaft wall distance, wall The height and thickness of pile are adjusted according to field condition, and the dead zone between work stone pier 2 and shaft wall 11 uses slabstone Mortar 10 is filled, and the borehole wall is poured using armored concrete, and borehole wall surface uses gunite concrete strengthening supporting, together When reduce ventilation resistance, strength grade of concrete is not lower than C30, thickness 50mm, and anchor is carried out in roof absciss layer area 5 Bar slip casting injects high molecular bonding material, the rock in roof delamination area 5 is bonded, and prevents destruction and slump, influences construction peace Entirely, the safety of shaft of vertical well is increased.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations Example, within the knowledge of a person skilled in the art, can also make under the premise of present inventive concept is not departed from Go out various change.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006170.9A CN108150175A (en) | 2018-01-04 | 2018-01-04 | Shaft of vertical well passes through the supporting construction of the old dead zone in coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006170.9A CN108150175A (en) | 2018-01-04 | 2018-01-04 | Shaft of vertical well passes through the supporting construction of the old dead zone in coal seam |
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| CN108150175A true CN108150175A (en) | 2018-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810006170.9A CN108150175A (en) | 2018-01-04 | 2018-01-04 | Shaft of vertical well passes through the supporting construction of the old dead zone in coal seam |
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Cited By (2)
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| CN109184752A (en) * | 2018-09-29 | 2019-01-11 | 陕西陕煤黄陵矿业有限公司 | A kind of coal mine supporting construction and its method for protecting support for passing through old kiln goaf |
| CN110424968A (en) * | 2019-07-04 | 2019-11-08 | 北京科技大学 | A kind of pit shaft reinforcement means based on anchor note anti-corrosion measure |
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Application publication date: 20180612 |