CN207728370U - A kind of advanced jacking of floor device of gob side entry retaining - Google Patents
A kind of advanced jacking of floor device of gob side entry retaining Download PDFInfo
- Publication number
- CN207728370U CN207728370U CN201820017437.XU CN201820017437U CN207728370U CN 207728370 U CN207728370 U CN 207728370U CN 201820017437 U CN201820017437 U CN 201820017437U CN 207728370 U CN207728370 U CN 207728370U
- Authority
- CN
- China
- Prior art keywords
- side entry
- gob side
- cast
- place concrete
- concrete pile
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of advanced jacking of floor devices of gob side entry retaining, including several cast-in-place concrete piles, the first advance of each cast-in-place concrete pile is set on the bottom plate of gob side entry, the other end of each cast-in-place concrete pile is set in basement rock, each walking for prop of the cast-in-place concrete pile by gob side entry lane is arranged to the midline, realize the gob side entry retaining in coal road road of keeping on file, later stage roadside support body sinkage and roof delamination amount are small, roadway deformation amount is small, it ensure that the ventilation section of later stage gob side entry, roadside support body bottom is hard concrete after bottom is played in tunnel, roadside support body stability higher.
Description
Technical field
The utility model belongs to coal mining reinforcement technique field, is related to a kind of advanced jacking of floor device of gob side entry retaining.
Background technology
Gob-side entry retaining support technology is that during coal working face is mined, (or two) tunnel of this working face is protected
It stays, is serviced for subsequent work face.In order not to cause the waste of coal and be conducive to assistant conveyance, return airway is generally all adopted
Top coal is stayed with along bottom driving, but tunnelling speed is low, coal slabbing easily occurs for top plate, in order to improve driving speed and improve peace
Quan Xing, part tunnel tunnel coal of keeping on file using edge top and stay lane roadside support body to be located at pine the gob side entry retaining in such tunnel
On soft ground coal, stay the roadside support body depression of lane later stage, roof delamination is serious, and roadway deformation amount is big, cause later maintenance at
This is excessively high, and severe patient leads to that lane is stayed to fail.
Utility model content
The purpose of this utility model is to provide a kind of advanced jacking of floor devices of gob side entry retaining, solve in the prior art
It keeps on file the gob side entry retaining in coal road road, later stage roadside support body sinkage, roof delamination amount and the big problem of roadway deformation amount.
The utility model the technical scheme adopted is that a kind of advanced jacking of floor device of gob side entry retaining, including several
The first advance of cast-in-place concrete pile, each cast-in-place concrete pile is set on the bottom plate of gob side entry, and each concrete fills
The other end of note stake is set in basement rock, and each cast-in-place concrete pile is set to the midline along walking for the prop by gob side entry lane
It sets.
The utility model is also characterized by
Cast-in-place concrete pile is two rows.
Two rows of cast-in-place concrete piles are symmetrical arranged to the midline along walking for prop.
The spacing of two rows of cast-in-place concrete piles is 300mm~1000mm, and array pitch is 300mm~1500mm.
The depth that each cast-in-place concrete pile gos deep into basement rock is 500mm~1000mm.
The utility model has the beneficial effects that：A kind of advanced jacking of floor device of gob side entry retaining, coagulation is set by staying in advance
Native bored concrete pile, the double arrangement of cast-in-place concrete pile across pitch, walking for double cast-in-place concrete pile are walked with roadside support body to the midline
It overlaps to the midline, cooperation lag working face, which stays, sets roadside support body, realizes the gob side entry retaining in coal road road of keeping on file, later stage lane collateral branch
Watch box sinkage and roof delamination amount are small, and roadway deformation amount is small, ensure that the ventilation section of later stage gob side entry, tunnel play bottom
Roadside support body bottom is hard concrete, roadside support body stability higher later.
Description of the drawings
Fig. 1 is a kind of advanced jacking of floor device floor map of gob side entry retaining of the utility model；
Fig. 2 is a kind of advanced jacking of floor device sectional schematic diagram of gob side entry retaining of the utility model.
In figure, 1. cast-in-place concrete piles, 2. props, 3. ground coal, 4. basement rock, 5. gob side entries, 6. goafs.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of advanced jacking of floor device of gob side entry retaining of the utility model, as depicted in figs. 1 and 2, including several coagulations
The first advance of native bored concrete pile 1, each cast-in-place concrete pile 1 is set on the bottom plate of gob side entry 5, each filling concrete
The other end of stake 1 is set in basement rock 4, and prop 2 of each cast-in-place concrete pile 1 by 5 lane of gob side entry is walked to the midline
Setting.
Cast-in-place concrete pile 1 is two rows.
Two rows of cast-in-place concrete piles 1 are symmetrical arranged to the midline along walking for prop 2.
The spacing of two rows of cast-in-place concrete piles 1 is 300mm~1000mm, and array pitch is 300mm~1500mm.
The depth that each cast-in-place concrete pile 1 gos deep into basement rock 4 is 500mm~1000mm.
A kind of application method of gob side entry retaining advanced stand device of the utility model is：Gob side entry retaining first advance is with edge
Walking for 5 roadside support body 2 of empty tunnel is arranged symmetrically two rows of cast-in-place concrete piles 1 to the midline, 1 first advance of cast-in-place concrete pile
It being set on 5 bottom plate of gob side entry, the spacing of cast-in-place concrete pile 1 is 300mm~1000mm, and array pitch is 300mm~1500mm,
The distance that cast-in-place concrete pile 1 gos deep into basement rock 4 is 500mm~1000mm.
The strength grade of cast-in-place concrete pile 1 is identical as the strength grade of prop 2, in the trend of cast-in-place concrete pile 1
Line 7 overlaps to the midline with walking for roadside support body 2, after roadside support body 2 waits for the advance of the face, is seated stable concrete
On bored concrete pile 1, after later stage gob side entry 5 plays bottom, the bottom of roadside support body 2 is hard concrete, be ensure that by lane
The stability of prop 2 so that the deflection of gob side entry 5 reduces, and substantially increases similar 4 tunnel of coal of keeping on file and implements to stay along sky
The feasibility in lane.
A kind of advanced jacking of floor device of gob side entry retaining of the utility model, sets cast-in-place concrete pile, coagulation by staying in advance
The native double arrangement of bored concrete pile across pitch, the walking to walk with roadside support body to the midline of double cast-in-place concrete pile overlap to the midline, match
Close lag working face to stay and sets roadside support body, realize the gob side entry retaining in coal road road of keeping on file, later stage roadside support body sinkage with
And roof delamination amount is small, roadway deformation amount is small, ensure that the ventilation section of later stage gob side entry, tunnel play roadside support after bottom
Body bottom is hard concrete, roadside support body stability higher.
Claims (5)
1. a kind of advanced jacking of floor device of gob side entry retaining, which is characterized in that including several cast-in-place concrete piles (1), each
The first advance of the cast-in-place concrete pile (1) is set on the bottom plate of gob side entry (5), each cast-in-place concrete pile
(1) the other end is set in basement rock (4), and each cast-in-place concrete pile (1) is along the prop by gob side entry (5) lane
(2) walk is arranged to the midline.
2. the advanced jacking of floor device of a kind of gob side entry retaining according to claim 1, which is characterized in that the concrete fills
It is two rows to note stake (1).
3. the advanced jacking of floor device of a kind of gob side entry retaining according to claim 2, which is characterized in that two rows of coagulations
Native bored concrete pile (1) is symmetrical arranged to the midline along walking for prop (2).
4. the advanced jacking of floor device of a kind of gob side entry retaining according to claim 3, which is characterized in that two rows of coagulations
The spacing of native bored concrete pile (1) is 300mm~1000mm, and array pitch is 300mm~1500mm.
5. the advanced jacking of floor device of a kind of gob side entry retaining according to claim 4, which is characterized in that each coagulation
The depth that native bored concrete pile (1) gos deep into basement rock (4) is 500mm~1000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820017437.XU CN207728370U (en) | 2018-01-05 | 2018-01-05 | A kind of advanced jacking of floor device of gob side entry retaining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820017437.XU CN207728370U (en) | 2018-01-05 | 2018-01-05 | A kind of advanced jacking of floor device of gob side entry retaining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207728370U true CN207728370U (en) | 2018-08-14 |
Family
ID=63085115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820017437.XU Expired - Fee Related CN207728370U (en) | 2018-01-05 | 2018-01-05 | A kind of advanced jacking of floor device of gob side entry retaining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207728370U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273700A (en) * | 2019-08-01 | 2019-09-24 | 贵州大学 | It is a kind of to control red shale tunnel strength bolt-grouting support structure and its construction method |
-
2018
- 2018-01-05 CN CN201820017437.XU patent/CN207728370U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273700A (en) * | 2019-08-01 | 2019-09-24 | 贵州大学 | It is a kind of to control red shale tunnel strength bolt-grouting support structure and its construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180814 Termination date: 20200105 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |