CN108757031A - A kind of compound sealing method in tunnel that goaf tight roof is caving impact - Google Patents
A kind of compound sealing method in tunnel that goaf tight roof is caving impact Download PDFInfo
- Publication number
- CN108757031A CN108757031A CN201810505420.3A CN201810505420A CN108757031A CN 108757031 A CN108757031 A CN 108757031A CN 201810505420 A CN201810505420 A CN 201810505420A CN 108757031 A CN108757031 A CN 108757031A
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- Prior art keywords
- tunnel
- concrete
- goaf
- tight roof
- fire dam
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 150000001875 compounds Chemical class 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 230000003139 buffering effect Effects 0.000 claims abstract description 13
- 238000009412 basement excavation Methods 0.000 claims abstract description 6
- 239000003245 coal Substances 0.000 claims description 5
- 239000011229 interlayer Substances 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 12
- 239000000872 buffer Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 206010033799 Paralysis Diseases 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 230000008092 positive effect Effects 0.000 abstract description 2
- 238000004080 punching Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/103—Dams, e.g. for ventilation
- E21F17/12—Dam doors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention discloses a kind of compound sealing method in tunnel that goaf tight roof is caving impact, first stopping adopting and buffer chamber to the oblique excavation in tunnel both sides respectively near line in two tunnels；Close to buffering chamber edge, triangular concrete fire dam is set；Three layers of steel wire for being sprayed with concrete are uniformly laid with after fire dam by same distance；One layer of normal concrete fire dam is arranged after steel wire again.The present invention is for the goaf with tight roof, tight roof is caving the enormous impact wave to be formed and enters tunnel, it is first subjected to triangular concrete fire dam and buffers the abated effect of chamber, remaining shock wave is subtracted punching and absorption by three layers of flexibility containing concrete steel silk screen, the last impact force for keeping out remaining part by normal concrete fire dam again, the case where there is positive effect to the safety in tunnel and personnel, and then avoid causing equipment paralysis and casualties.
Description
Technical field
The present invention relates to coal mining technology fields, and the tunnel of impact is caving more particularly to a kind of goaf tight roof
Compound sealing method.
Background technology
In process of coal mining, tight roof large area caving can result in many serious consequences, especially top plate
Considerable damage can be generated to tunnel and working face by being caving the impact force to be formed.In the goaf containing tight roof, once top
Plate large area caving will result in and drastically be compressed in the gas short time in goaf, quickly forms and rushes with destructive power is strong
Wave is hit, is discharged into the spaces such as tunnel, equipment paralysis and casualties situation are caused.And it is directed to this case, it is set at present
Closed wall construction be mostly rectangular configuration, and type, bill of materials one.When the shock wave that roof falling over great extent is formed enters lane
Road, the energy of shock wave is much larger than the resistivity of fire dam, and rectangular tight wall forced area is big, all rigid structures,
There is no the sufficient time that wall is made to be buffered, easily destroy, stability and obturation effect are poor, can be to operations such as tunnels
Space forms certain threat.Therefore, tight roof large area caving in goaf forms shock wave and is reached not yet to the destruction in tunnel
To the degree controlled completely.
Invention content
The object of the present invention is to provide a kind of compound sealing methods in tunnel that goaf tight roof is caving impact, to solve
The above-mentioned problems of the prior art can weaken large area tight roof and be caving impact of the compression shock wave to be formed to tunnel
Power avoids causing equipment paralysis and casualties.
To achieve the above object, the present invention provides following schemes：A kind of goaf tight roof of present invention offer is caving
The compound sealing method in tunnel of impact, includes the following steps：
The first step：Stop adopting line near goaf in working face, chamber is buffered to the oblique excavation in both sides from tunnel respectively；
Second step：In close proximity to the rear of the buffering chamber, concrete closed wall is set；
Third walks：It is disposed with concrete steel silk screen, the concrete steel silk screen closing at the concrete closed wall rear
Entire tunnel surface；
4th step：A normal concrete fire dam is arranged at the rear of the concrete steel silk screen.
Preferably, the angle of inclination of the buffering chamber and the horizontal sextant angle in tunnel are 15-20 °, the depth of the chamber
It is highly equal with the height in tunnel for 5m, width 3m.
Preferably, the concrete closed wall be triangular concrete fire dam, the triangular concrete fire dam with
The angle constituted among the buffering chamber of both sides is mutually fitted close.
Preferably, the triangular concrete fire dam gos deep into both sides coal body and fixes and keep close.
Preferably, the interior thickness of the triangular concrete fire dam is 4m, and both sides are reduced successively, forms triangle
Shape.
Preferably, it is spaced 1m after the triangular concrete fire dam and arranges the concrete steel silk screen.
Preferably, the concrete steel silk screen includes three interlayers every the steel wire for being arranged and being sprayed with concrete, the steel wire
The two of net and tunnel help to be fixed with anchor pole, close entire tunnel surface.
Preferably, the wall thickness of the normal concrete fire dam is 2m.
The present invention achieves following technique effect compared with the existing technology：
The goaf tight roof of the present invention is caving the compound sealing method in tunnel of impact, and when goaf, tight roof reaches
Itself carrying energy, the compression shock billow that large area caving is formed enter tunnel, first by the concrete closed wall of triangle and
Both sides buffer the cushioning effect of chamber, and shock wave is made to weaken；Secondly it is acted on by the flexible buffer of 3 layer concrete steel wires, it can
Successively significantly to weaken the impact force of shock wave；Shock wave after decrease carries out absorption resistance by normal concrete fire dam,
The case where achieving the effect that eliminate shock wave jointly, and then avoiding causing equipment paralysis and casualties.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the compound closed overall schematic in tunnel that goaf tight roof of the present invention is caving impact；
Fig. 2 is the structural schematic diagram of concrete steel silk screen；
Fig. 3 is the fixed form schematic diagram of steel wire；
Wherein, 1 stops adopting line；2 goafs；3 tunnels；4 buffering chambers；5 triangular concrete fire dams；6 concrete steel wires
Net；7 normal concrete fire dams；8 concrete；9 steel wires；10 anchor poles.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of compound sealing methods in tunnel that goaf tight roof is caving impact, to solve
The above-mentioned problems of the prior art can weaken large area tight roof and be caving impact of the compression shock wave to be formed to tunnel
Power avoids causing equipment paralysis and casualties.
The compound sealing method in tunnel that goaf tight roof provided by the invention is caving impact, includes the following steps：The
One step：Stop adopting line near goaf in working face, chamber is buffered to the oblique excavation in both sides from tunnel respectively；Second step：?
Concrete closed wall is arranged in rear side against buffering chamber；Third walks：Concrete steel wire is disposed on rear side of concrete closed wall
Net, concrete steel silk screen close entire tunnel surface；4th step：Arrange that a normal concrete is close in the rear side of concrete steel silk screen
Close wall.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
Please refer to Fig.1-3, wherein Fig. 1 is that the goaf tight roof of the present invention tunnel that is caving impact is compound closed whole
Body schematic diagram；Fig. 2 is the structural schematic diagram of concrete steel silk screen；Fig. 3 is the fixed form schematic diagram of steel wire.
As shown in Figs. 1-3, the present invention provides a kind of compound sealing method in tunnel that goaf tight roof is caving impact, packet
Include following steps：
The first step：Stop adopting line 1 near goaf 2 in working face, cave is buffered to the oblique excavation in both sides from tunnel 3 respectively
The horizontal sextant angle of room 4, the angle of inclination and tunnel 3 that buffer chamber 4 is 15-20 °, and the depth of chamber is 5m, width 3m, height
It is equal with the height in tunnel 3.
Second step：Concrete closed wall is set in close proximity to the rear side of buffering chamber 4, concrete closed wall is triangle coagulation
The angle constituted among native fire dam 5, triangular concrete fire dam 5 and the buffering chamber 4 of both sides is mutually fitted close, triangle
Concrete closed wall 5, which gos deep into both sides coal body, to be fixed and keeps close；The interior thickness of triangular concrete fire dam 5 be 4m, two
Side is reduced successively, forms triangle.
Third walks：It is spaced 1m on rear side of concrete closed wall and is disposed with concrete steel silk screen 6, concrete steel silk screen 6 includes
Three interlayers are uniformly injected in every the steel wire 9 for being arranged and being sprayed with concrete eight, concrete eight on steel wire 9, steel wire 9 and tunnel 3
Two help with anchor pole 10 fix, close 3 surface of entire tunnel.
4th step：A normal concrete fire dam 7, normal concrete fire dam 7 are arranged in the rear side of concrete steel silk screen 6
Wall thickness be 2m.
A kind of 2 tight roof of goaf of the present invention is caving the 3 compound sealing method of tunnel of impact, it is to be directed to goaf
2 there are the regions of tight roof, first stopping adopting and buffer cave to the oblique excavation in 3 both sides of tunnel respectively near line 1 in two tunnels 3
Room 4；Close to 4 edge of buffering chamber setting triangular concrete fire dam 5；After fire dam three layers are uniformly laid with by same distance
It is sprayed with the steel wire 9 of concrete eight；One layer of normal concrete fire dam 7 is arranged after steel wire 9 again.The present invention is for hard
The goaf 2 of top plate, tight roof are caving the enormous impact wave to be formed and enter tunnel 3, and it is closed to be first subjected to triangular concrete
The abated effect of wall 5 and buffering chamber 4, remaining shock wave are subtracted punching and suction by three layers of flexibility containing concrete steel silk screen 6
Adduction is finally kept out the impact force of remaining part by normal concrete fire dam 7 again, is had to the safety in tunnel 3 and personnel
Positive effect.
Specific case is applied in the present invention, and principle and implementation of the present invention are described, above example
Illustrate the method and its core concept for being merely used to help understand the present invention；Meanwhile for those of ordinary skill in the art, according to
According to the thought of the present invention, there will be changes in the specific implementation manner and application range.To sum up, the content of the present specification is not answered
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of compound sealing method in tunnel that goaf tight roof is caving impact, it is characterised in that：Include the following steps：
The first step：Stop adopting line near goaf in working face, chamber is buffered to the oblique excavation in both sides from tunnel respectively；
Second step：In close proximity to the rear of the buffering chamber, concrete closed wall is set；
Third walks：It is disposed with concrete steel silk screen at the concrete closed wall rear, the concrete steel silk screen closing is entire
Tunnel surface；
4th step：A normal concrete fire dam is arranged at the rear of the concrete steel silk screen.
2. the compound sealing method in tunnel that goaf tight roof according to claim 1 is caving impact, it is characterised in that：
The angle of inclination of the buffering chamber and the horizontal sextant angle in tunnel are 15-20 °, and the depth of the chamber is 5m, width 3m, height
Degree is equal with the height in tunnel.
3. the compound sealing method in tunnel that goaf tight roof according to claim 1 is caving impact, it is characterised in that：
The concrete closed wall is triangular concrete fire dam, the buffering cave of the triangular concrete fire dam and both sides
The angle constituted among room is mutually fitted close.
4. the compound sealing method in tunnel that goaf tight roof according to claim 3 is caving impact, it is characterised in that：
The triangular concrete fire dam, which gos deep into both sides coal body, to be fixed and keeps close.
5. the compound sealing method in tunnel that goaf tight roof according to claim 3 is caving impact, it is characterised in that：
The interior thickness of the triangular concrete fire dam is 4m, and both sides are reduced successively, forms triangle.
6. the compound sealing method in tunnel that goaf tight roof according to claim 3 is caving impact, it is characterised in that：
It is spaced 1m after the triangular concrete fire dam and arranges the concrete steel silk screen.
7. the compound sealing method in tunnel that goaf tight roof according to claim 1 is caving impact, it is characterised in that：
The concrete steel silk screen includes three interlayers every the steel wire for being arranged and being sprayed with concrete, and the two of the steel wire and tunnel helps to use
Anchor pole is fixed, and entire tunnel surface is closed.
8. the compound sealing method in tunnel that goaf tight roof according to claim 1 is caving impact, it is characterised in that：
The wall thickness of the normal concrete fire dam is 2m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505420.3A CN108757031B (en) | 2018-05-24 | 2018-05-24 | Roadway composite sealing method for caving impact of hard top plate in goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505420.3A CN108757031B (en) | 2018-05-24 | 2018-05-24 | Roadway composite sealing method for caving impact of hard top plate in goaf |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108757031A true CN108757031A (en) | 2018-11-06 |
| CN108757031B CN108757031B (en) | 2020-03-13 |
Family
ID=64005401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810505420.3A Active CN108757031B (en) | 2018-05-24 | 2018-05-24 | Roadway composite sealing method for caving impact of hard top plate in goaf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757031B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392542A (en) * | 2020-11-09 | 2021-02-23 | 太原理工大学 | Goaf roof large-area caving hurricane hazard eliminating device based on deceleration and energy reduction |
| CN113027517A (en) * | 2020-12-08 | 2021-06-25 | 山西工程技术学院 | Method for preventing and controlling shock waves of goaf by rigid-flexible combined structure |
-
2018
- 2018-05-24 CN CN201810505420.3A patent/CN108757031B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392542A (en) * | 2020-11-09 | 2021-02-23 | 太原理工大学 | Goaf roof large-area caving hurricane hazard eliminating device based on deceleration and energy reduction |
| CN113027517A (en) * | 2020-12-08 | 2021-06-25 | 山西工程技术学院 | Method for preventing and controlling shock waves of goaf by rigid-flexible combined structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108757031B (en) | 2020-03-13 |
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