CN209244567U - Deep-lying tunnel construction rock burst prevention and control drilling arragement construction - Google Patents
Deep-lying tunnel construction rock burst prevention and control drilling arragement construction Download PDFInfo
- Publication number
- CN209244567U CN209244567U CN201821830650.9U CN201821830650U CN209244567U CN 209244567 U CN209244567 U CN 209244567U CN 201821830650 U CN201821830650 U CN 201821830650U CN 209244567 U CN209244567 U CN 209244567U
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- Prior art keywords
- rock burst
- rock
- deep
- hole
- prevention
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- Expired - Fee Related
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- 239000011435 rock Substances 0.000 title claims abstract description 87
- 230000002265 prevention Effects 0.000 title claims abstract description 34
- 238000010276 construction Methods 0.000 title claims abstract description 33
- 238000005553 drilling Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 201000004569 Blindness Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a kind of deep-lying tunnel construction rock burst prevention and control drilling arragement constructions, it drills including multiple rock burst prevention and control, rock burst prevention and control drill by one or more pressure break holes, several pressure relief vents and side wall slot hole are constituted, pressure break hole extends from working face along the rock burst region for being parallel to canal axes direction towards front, pressure relief vent extends towards the rock burst region in front of side at an angle from working face and canal axes, side wall slot hole lags behind working face, and extend to vertical canal axes towards lateral rock burst region, oval groove body and a large amount of microfissure are formed in tunnel side wall rock mass；Tunnel rock burst intersegmental part is goed deep into rock burst prevention and control drilling.The utility model changes the integrality of country rock to a certain extent, can release the high-stress state of country rock, reduces rock burst generation intensity and even is eliminated rock burst.
Description
Technical field
The utility model belongs to the underground engineering fields such as traffic, mine, water conservancy and hydropower, and in particular to a kind of deep-lying tunnel is applied
Work rock burst prevention and control drilling arragement construction, releases rock mass suitable for the deep tunnel with the medium and above rockburst intensity in advance and answers
Power, softening country rock, prevention and control rock burst hazard.
Background technique
In deep during tunnel excavation, the energy of the rock mass accumulation under high-stress state discharges suddenly, causes to enclose
Rock destroys, and fractured rock is dished out, i.e. generation rock burst often can cause casualties, the destruction of equipment damage and construction, sternly
Ghost image rings construction speed, increases tunnel maintenance cost.Therefore, before deep-lying tunnel is excavated to rock burst section, prevention and control should be taken to arrange
It applies to reduce rock burst occurrence probability and rock burst intensity grade, it is ensured that the construction safety of rock blasting region.
The features such as there are blindness and randomness, is arranged in traditional deep-lying tunnel rock burst prevention and control drilling, and stress relieving is bored
Hole aperture is small, and coverage is limited；Charge explosion is taken to release strain method, it is broken to will cause irreversible damage to reservation country rock
Bad, influencing tunnel is stability.Practice have shown that existing rock burst preventing control method is difficult to obtain ideal effect.
Summary of the invention
The purpose of this utility model is the deficiency existing for arragement construction that drills for above-mentioned existing deep-lying tunnel rock burst prevention and control,
A kind of deep-lying tunnel construction rock burst prevention and control drilling arragement construction is provided, to reduce and bore while release tunnel stress in advance
Hole number guarantees the safety of construction personnel, mechanical equipment, it is ensured that safely and fast passes through rock burst section.
To achieve the goals above, the utility model adopts the following technical solution: a kind of deep-lying tunnel rock burst prevention and control drilling
Arragement construction, including multiple rock burst prevention and control drilling, rock burst prevention and control drilling by one or more pressure break holes, several pressure relief vents and
Side wall slot hole is constituted, and the pressure break hole extends from working face along the rock burst region for being parallel to canal axes direction towards front,
The pressure relief vent extends towards the rock burst region in front of side at an angle from working face and canal axes, and side wall slot hole is stagnant
Afterwards in working face, and extend to vertical canal axes towards lateral rock burst region, forms elliptical slot in tunnel side wall rock mass
Body and a large amount of microfissure；Tunnel rock burst intersegmental part is goed deep into the rock burst prevention and control drilling；Pressure break hole and pressure relief vent are in rock burst section
Interior depth is not less than 20m, and depth of the side wall rock burst prevention and control hole in rock burst section is not less than 10m.
Further, borehole bottom location spacing in pressure break hole is 20 ~ 40m, and pressure relief vent borehole bottom location spacing is 5 ~ 8m, and slot hole is whole
Hole site spacing is 8 ~ 12m, and pressure break hole sealing of hole segment length is not less than 15m.
Further, pressure break hole and slot hole aperture are 89 ~ 120mm, and release bore dia is 75mm ~ 108mm.
The utility model, can be in tunnel excavation contour line by constructing advanced pressure break hole and pressure relief vent in rock burst section
A large amount of release hole and through crack are formed in rock mass, it, can be in tunnel side wall by lagging the side wall slot hole of working face
The elliptical slot that certain length is formed in rock mass, is formed simultaneously a large amount of microfissure, changes the complete of country rock to a certain extent
Whole property can release the high-stress state of country rock, reduce rock burst generation intensity and even be eliminated rock burst.
High pressure water is injected by pressure break hole and implements pressure break, and while releasing high-stress state, high pressure water passes through pressure break shape
At microfissure enter in rock mass, side wall slot hole be used as slot high pressure water also can enter the advance of the face formation crack
In, play the role of softening on a large scale that country rock, to reduce country rock brittle.
In addition to this, slot, pressure break are formed slot, gap can absorb after causing surrounding rock failure during tunnel excavation
Remaining energy, plays buffer function, is effectively reduced or eliminates rock burst danger.It drills compared to conventional tunnel rock burst prevention and control
Arragement construction, this rock burst prevention and control drilling arragement construction are with the obvious advantage.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the utility model deep-lying tunnel construction rock burst prevention and control drilling arragement construction.
Fig. 2 is the profilograph of the utility model deep-lying tunnel construction rock burst prevention and control drilling arragement construction.
In figure: 1- tunnel, 2- pressure break hole, 3- pressure relief vent, 4- slot hole, 5- rock burst section, 6- lag working face distance, 7- peace
Full distance.
Specific embodiment
The utility model will be further described for embodiment in reference to the accompanying drawing.
A kind of deep-lying tunnel construction rock burst prevention and control drilling arragement construction, including by one or more pressure break holes 2, several releases
Multiple rock burst prevention and control drilling that hole 3 and side wall slot hole 4 are constituted, wherein pressure break hole 2 is parallel to 1 axis side of tunnel from working face edge
To the extension of rock burst region 5 towards front, pressure relief vent 3 is from working face and 1 axis of tunnel at an angle towards the rock burst in front of side
Region 5 extends, and side wall slot hole 4 lags working face certain distance 6, and vertical 1 axis of tunnel extends towards lateral rock burst region 5,
Each rock burst prevention and control drilling is goed deep into inside 1 rock burst section 5 of tunnel, and the depth of pressure break hole 2 and pressure relief vent 3 in rock burst section is not less than
20m, 4 drilling depth of side wall slot hole are not less than 10m.
The utility model by adopting the above technical scheme, in practical application, pressure break hole 2 of constructing first, and implement waterpower
Fracturing methods, pressure relief vent 3 of secondly constructing, after advance of the face certain distance 6, side wall slot hole 4 of constructing again；Pressure break hole 2
Borehole bottom location spacing is 20 ~ 40m, and 3 borehole bottom location spacing of pressure relief vent is 5 ~ 8m, and 4 borehole bottom location spacing of slot hole is 8 ~ 12m, pressure
2 sealing of hole segment length of ceasma is not less than 15m；The pressure break hole 2 and 4 aperture of slot hole are 89 ~ 120mm, and 3 diameter of pressure relief vent is 75mm
~108mm；The quantity of all kinds of rock burst prevention and control drillings depends on the factors such as 1 cross dimensions of tunnel and rockburst intensity；The working face is answered
It is promoted in the case where the rock burst prevention and control drilling safe distance 7 of no less than 10m is protected.
Although combining attached drawing above describes embodiments of the present invention, those skilled in the art can also be with
It makes a variety of changes or modifies in the range of appended claims, these modifications and variations are understood as in model of the invention
Within enclosing and being intended to.
Claims (5)
- Arragement construction, including multiple rock burst prevention and control drilling 1. a kind of deep-lying tunnel construction rock burst prevention and control drill, it is characterised in that: institute It states rock burst prevention and control drilling to be made of one or more pressure break holes, several pressure relief vents and side wall slot hole, the pressure break hole works certainly Face extends along the rock burst region for being parallel to canal axes direction towards front, and the pressure relief vent is from working face and canal axes in one Determine angle to extend towards the rock burst region in front of side, side wall slot hole lags behind working face, and to vertical canal axes towards side To rock burst region extend, oval groove body and a large amount of microfissure are formed in tunnel side wall rock mass；The rock burst prevention and control are bored Tunnel rock burst intersegmental part is goed deep into hole.
- The arragement construction 2. deep-lying tunnel construction rock burst prevention and control according to claim 1 drill, it is characterised in that: the pressure break The depth of hole and pressure relief vent in rock burst section is not less than 20m.
- The arragement construction 3. deep-lying tunnel construction rock burst prevention and control according to claim 1 drill, it is characterised in that: the side wall Depth of the slot hole in rock burst section is not less than 10m.
- The arragement construction 4. deep-lying tunnel construction rock burst prevention and control according to claim 1 drill, it is characterised in that: the pressure break Hole borehole bottom location spacing is 20 ~ 40m, and pressure relief vent borehole bottom location spacing is 5 ~ 8m, and slot hole borehole bottom location spacing is 8 ~ 12m, pressure Ceasma sealing of hole segment length is not less than 15m.
- The arragement construction 5. deep-lying tunnel construction rock burst prevention and control according to claim 1 drill, it is characterised in that: the pressure break Hole and slot hole aperture are 89 ~ 120mm, and release bore dia is 75mm ~ 108mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821830650.9U CN209244567U (en) | 2018-11-08 | 2018-11-08 | Deep-lying tunnel construction rock burst prevention and control drilling arragement construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821830650.9U CN209244567U (en) | 2018-11-08 | 2018-11-08 | Deep-lying tunnel construction rock burst prevention and control drilling arragement construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209244567U true CN209244567U (en) | 2019-08-13 |
Family
ID=67527371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821830650.9U Expired - Fee Related CN209244567U (en) | 2018-11-08 | 2018-11-08 | Deep-lying tunnel construction rock burst prevention and control drilling arragement construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209244567U (en) |
-
2018
- 2018-11-08 CN CN201821830650.9U patent/CN209244567U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190813 |