CN207686743U - The supporting construction of three soft formation entity coal roads - Google Patents
The supporting construction of three soft formation entity coal roads Download PDFInfo
- Publication number
- CN207686743U CN207686743U CN201721752428.7U CN201721752428U CN207686743U CN 207686743 U CN207686743 U CN 207686743U CN 201721752428 U CN201721752428 U CN 201721752428U CN 207686743 U CN207686743 U CN 207686743U
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- Prior art keywords
- coal
- coal road
- road
- layer
- rock
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- 239000003245 coal Substances 0.000 title claims abstract description 103
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 23
- 230000008093 supporting effect Effects 0.000 title claims abstract description 21
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 239000011435 rock Substances 0.000 claims abstract description 39
- 238000005755 formation reaction Methods 0.000 claims abstract description 22
- 239000011378 shotcrete Substances 0.000 claims abstract description 10
- 238000007569 slipcasting Methods 0.000 claims description 7
- 235000013312 flour Nutrition 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000005065 mining Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 239000011440 grout Substances 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002789 length control Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000004911 serous fluid Anatomy 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Abstract
The utility model discloses a kind of supporting construction of three soft formations entity coal road, include coal road and be located at the argillaceous siltstoue layer of coal road bottom, the coal seam of both sides and top argillaceous siltstoue layer, the surrounding of coal road is formed with two layers of gunite layer by whitewashing respectively at the position being in contact with the argillaceous siltstoue layer at the top of coal seam and coal road, and the more grouted anchor bars extended respectively into the argillaceous siltstoue layer at the top of coal seam and coal road and Duo Gen high strength anchor bars are embedded with around the surrounding of coal road.Entity coal road in three soft formations is improved the self-strength of rock coal body by the utility model by closed perimeter rock coal body technology of quickly whitewashing, and blocking crevice water prevents rock coal body weathering；By deep hole sealing technology, keep rock coal body fully cementing, increases support circle carrying range and improve tunnel integer support intensity to ensure that the safety of construction, reduce support cost.
Description
Technical field
The utility model is related to Roadway Support Technology field, the supporting construction of specifically a kind of three soft formations entity coal road.
Background technology
As coal mining depth is continuously increased, mining conditions are more and more difficult, surrouding rock stress and hydrogeologic condition into
One step deteriorates.When tunnel is in three soft formations, tunnel has the spies such as country rock is soft, stability is poor, deformation is big, mining influence is big
Point.Especially for the entity coal road in three soft formations, since tunnel passes through coal seam, two help as soft coal seam, coal seam past
The generally argillaceous siltstoue of 1.2~3m of average thickness, directly top, old top are generally the shale flour sand of average thickness 2m or so
Rock, roof and floor lithologic is relatively soft, water-swellable softening.Therefore the decline of roadway support body anchor force is fast, deformation failure is serious, repaiies
Multiple quantities is big, of high cost, frequently overhauls and also results in production connecting and safety management difficulty.It even results in tunnel and collapses and emit, seriously
Influence coal mining safety.Supporting to entity coal road under the conditions of this three soft formation is always puzzlement colliery engineering construction
Great difficult problem.
Utility model content
The purpose of this utility model is to provide a kind of supporting construction of three soft formations entity coal road, to solve above-mentioned background skill
The problems in art.
The technical solution of the utility model is as follows：
A kind of supporting construction of three soft formations entity coal road includes coal road and is located at the shale powder of coal road bottom
The argillaceous siltstoue layer of sandstone layer, the coal seam of both sides and top, it is characterised in that：The surrounding of the coal road with the coal seam and
The position that argillaceous siltstoue layer at the top of coal road is in contact is formed with two layers of gunite layer by whitewashing respectively, around the coal road
Surrounding is embedded with more grouted anchor bars and the Duo Gen high extended respectively into the argillaceous siltstoue layer at the top of the coal seam and coal road
Strong anchor pole.
The supporting construction of the three soft formation entity coal roads, it is characterised in that：The thickness of two layers of gunite layer is distinguished
For 30~40mm.
The supporting construction of the three soft formation entity coal roads, it is characterised in that：The more grouted anchor bars and Duo Gen
High strength anchor bar is radially and interleaved is distributed in the surrounding of the coal road.
The supporting construction of the three soft formation entity coal roads, it is characterised in that：The length of the more grouted anchor bars point
It Wei not 2400mm.
The supporting construction of the three soft formation entity coal roads, it is characterised in that：The more high strength anchor bars it is a diameter of
The spacing of respectively 22mm, adjacent two high strength anchor bars are 600mm.
The utility model is using quickly whitewashing closed perimeter rock coal body technology, due to the entity coal road in three soft formations, lane
Road passes through coal seam, and two help as soft coal seam, and tunnel bottom and top are mostly the argillaceous siltstoue of thin layer, and lithology is relatively soft,
Water-swellable softens, and destroys original stress equilibrium after being excavated due to coal road, and easily deform destruction in the short time,
Therefore, after roadway excavation, it is necessary to which quickly whitewashing closed perimeter rock coal body, the self-strength of raising rock coal body block crack immediately
Water prevents rock coal body weathering.The utility model uses two layers of grout layer, thickness to be controlled respectively in 30~40mm, can accelerate tunnel
Speed in a closed circuit prevents rock coal body water-swellable from softening, and initial strength support is provided for follow-up supporting.
The utility model is using deep hole sealing technology, after carrying out release to country rock, beats deep hole-sealing grouting anchor pole, increases sealing of hole
Depth, since rock coal body is relatively soft broken, general grouted anchor bar grouting serous fluid easily breaks through gunite layer, not only slurries is caused to let out
Leakage reduces grouting pressure, also easily causes construction risk.Therefore grouted anchor bar hole sealing depth must be increased, anti-starch is made to be not easy to break through
Gunite layer, while also widened grout spreading range, increase support circle range.The utility model is using deep hole-sealing grouting anchor
Bar, pressure control is in 1.5MPa hereinafter, implementation voltage stabilizing, pressure control slip casting, keep rock coal body fully cementing.
The beneficial effects of the utility model：
The utility model is by the entity coal road in three soft formations, by closed perimeter rock coal body technology of quickly whitewashing,
The self-strength of rock coal body is improved, blocking crevice water prevents rock coal body weathering；By deep hole sealing technology, make the abundant glue of rock coal body
Knot increases support circle carrying range and improves tunnel integer support intensity to ensure that the safety of construction, reduce
Support cost.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Specific implementation mode
Referring to Fig. 1, a kind of supporting construction of three soft formations entity coal road includes coal road 6 and is located at 6 bottom of coal road
The argillaceous siltstoue layer 1 in portion, the coal seam 2 of both sides and top argillaceous siltstoue layer 5, the surrounding of coal road 6 with coal seam 2 and coal road
The position that the argillaceous siltstoue layer 5 at 6 tops is in contact is formed with two layers of gunite layer 7 by whitewashing respectively, surrounds the surrounding of coal road 6
It is embedded with the more grouted anchor bars 3 extended respectively into the argillaceous siltstoue layer 5 at 6 top of coal seam 2 and coal road and the high-strength anchors of Duo Gen
Bar 4.
In the utility model, the thickness of two layers of gunite layer 7 is respectively 30~40mm.
More grouted anchor bars 3 and Duo Gen high strength anchor bars 4 are radially and interleaved is distributed in the surrounding of coal road 6.
The length of more grouted anchor bars 3 is respectively 2400mm.
More a diameter of of high strength anchor bar 4 are respectively 22mm, and the spacing of adjacent two high strength anchor bars is 600mm.
The utility model is further described below in conjunction with attached drawing：
After the driving of entity coal road 6, quickly whitewashing closed perimeter rock coal body is carried out immediately, it is high to mix and stir material using pulp shooting machine
Speed is ejected on rock coal body face, is bonded on rock coal body face through repeated stock densification, and rapid condensation is simultaneously closely connected cementing with rock coal body
It is integrally formed, to country rock surface with drag, roadway surrounding rock is made to be in the favo(u)red state of three received strength, prevent rock coal mass strength from disliking
Change, ensure the self-strength of rock coal body, while playing the role of blocking rock coal body internal crack water and preventing rock coal body weathering.Spray
It uses grout layer, thickness control to provide initial strength support in 30~40mm, for follow-up supporting when slurry, is in addition due to roof and floor
Lithology is soft, water-swellable softening, it is necessary to quick closure.After the whitewashing closing of coal road 6, more high strength anchor bars 4, diameter point are beaten immediately
Not Wei 22mm, spacing 600mm, since rock coal body is soft, it is necessary to increase the length of more high strength anchor bars 4, length control exists
More than 2.2m；After beating excessive root high strength anchor bar 4, steel wire rope is hung immediately, and forming wire-rope into interlocking-wire flower is pressed in the pallet of more high strength anchor bars 4
Under, to improve the flexibility of spray-up；Then the second gunite is carried out, thickness is still controlled in 30~40mm, improves tunnel again
Support strength；After carrying out release to country rock（General 3 to 5 days）, beat more grouted anchor bars 3, the hole depth of more grouted anchor bars 3
3000mm respectively, the length of more grouted anchor bars 3 is respectively 2400mm, and hole sealing depth is respectively 300~400mm, and is implemented steady
Pressure, pressure control slip casting, pressure control in 1.5MPa hereinafter, slip casting finds slurries when splitting slight leakage by spray-up surface, should temporarily immediately
Stop slip casting, then continue slip casting, when finding that slurries split slight leakage by spray-up surface again, shows rock coal body internal grouting blot
The crack of involved range is already filled with；The coal road 6 for so often tunneling 1800mm, recycles the above process, until at lane.
In embodiment, the utility model is in view of entity coal road in three soft formations, and tunnel has country rock soft, stable
Property it is poor, deformation is big, mining influence is big the features such as, by closed perimeter rock coal body technology of quickly whitewashing, improve rock coal body from
Body intensity, blocking crevice water prevents rock coal body weathering, and initial strength support is provided for follow-up supporting.
In embodiment, the utility model further implements entity coal road deep hole sealing technology, implements voltage stabilizing, control to rock coal body
Pressure grouting keeps rock coal body fully cementing, increases support circle carrying range, improves supporting effect of roadway.
Basic principles, main features, and advantages of the present invention has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (5)
1. a kind of supporting construction of three soft formations entity coal road includes coal road and is located at the shale flour sand of coal road bottom
The argillaceous siltstoue layer of rock stratum, the coal seam of both sides and top, it is characterised in that：The surrounding of the coal road with the coal seam and coal
The position that argillaceous siltstoue layer at the top of lane is in contact is formed with two layers of gunite layer by whitewashing respectively, surrounds the four of the coal road
It is embedded with the more grouted anchor bars extended respectively into the argillaceous siltstoue layer at the top of the coal seam and coal road week and Duo Gen is high-strength
Anchor pole.
2. the supporting construction of three soft formations entity coal road according to claim 1, it is characterised in that：Two layers of gunite layer
Thickness be respectively 30~40mm.
3. the supporting construction of three soft formations entity coal road according to claim 1, it is characterised in that：The more slip castings
Anchor pole and Duo Gen high strength anchor bars are radially and interleaved is distributed in the surrounding of the coal road.
4. the supporting construction of three soft formations entity coal road according to claim 1, it is characterised in that：The more slip casting anchors
The length of bar is respectively 2400mm.
5. the supporting construction of three soft formations entity coal road according to claim 1, it is characterised in that：The more high-strength anchors
The a diameter of of bar is respectively 22mm, and the spacing of adjacent two high strength anchor bars is 600mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721752428.7U CN207686743U (en) | 2017-12-15 | 2017-12-15 | The supporting construction of three soft formation entity coal roads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721752428.7U CN207686743U (en) | 2017-12-15 | 2017-12-15 | The supporting construction of three soft formation entity coal roads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207686743U true CN207686743U (en) | 2018-08-03 |
Family
ID=62998025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721752428.7U Expired - Fee Related CN207686743U (en) | 2017-12-15 | 2017-12-15 | The supporting construction of three soft formation entity coal roads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207686743U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645002A (en) * | 2019-09-29 | 2020-01-03 | 淮北工业建筑设计院有限责任公司 | Support method for coal mine tunnel |
-
2017
- 2017-12-15 CN CN201721752428.7U patent/CN207686743U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645002A (en) * | 2019-09-29 | 2020-01-03 | 淮北工业建筑设计院有限责任公司 | Support method for coal mine tunnel |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180803 |