CN206608188U - A kind of U-shaped steel supporting construction in control pole weak seam tunnel - Google Patents
A kind of U-shaped steel supporting construction in control pole weak seam tunnel Download PDFInfo
- Publication number
- CN206608188U CN206608188U CN201621205350.2U CN201621205350U CN206608188U CN 206608188 U CN206608188 U CN 206608188U CN 201621205350 U CN201621205350 U CN 201621205350U CN 206608188 U CN206608188 U CN 206608188U
- Authority
- CN
- China
- Prior art keywords
- shaped steel
- anchor pole
- leg anchor
- steel bracket
- supporting construction
- 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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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 50
- 239000010959 steel Substances 0.000 title claims abstract description 50
- 230000008093 supporting effect Effects 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 239000011435 rock Substances 0.000 abstract description 5
- 230000000116 mitigating effect Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000035899 viability Effects 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a kind of U-shaped steel supporting construction in control pole weak seam tunnel, it is characterised in that：Traditional U-shaped steel bracket is used in extremely soft seam tunnel（1）Apply lock leg anchor pole on the basis of supporting（2）And destressing borehole（3）, lock leg anchor pole（2）And destressing borehole（3）It is arranged at U-shaped steel bracket（1）Between, lock leg anchor pole（2）Away from 300 ~ 500mm of roadway floor, leg anchor pole is locked（2）Array pitch is with U-shaped steel bracket array pitch；Destressing borehole（3）Array pitch is with U-shaped steel bracket array pitch.On the one hand the supporting construction improve the bearing capacity of support, on the other hand certain Free up Memory is reserved for the bulking deformation of country rock, pressure of the mitigation on U-shaped steel bracket, the deflection in tunnel is efficiently controlled, both synergies, respective advantage can be given full play to, the supporting effect of U-shaped steel bracket is effectively improved.
Description
Technical field
The utility model is related to a kind of U-shaped steel supporting construction in control pole weak seam tunnel, belongs to colliery tunnel support
Field.
Background technology
In recent years, with increasingly complicated, the extremely soft seam (the uniaxial compressive strength ＜ 5MPa of coal sample) of coal mining condition
Mining problem is increasing.Due to coal seam extremely loose crushing, suspension roof support has that anchor force is low, anchoring quality is insecure asks
Topic, not only supporting effect is poor, and top plate is taken risks in the presence of collapsing, and very big hidden danger, therefore, extremely soft seam lane are brought to safety in production
The application of suspension roof support is very limited in road.Such tunnel generally uses Telescopic U-shaped steel bracket support, not only in driving
Surrouding rock deformation is violent during influence, and still keeps quick rheology after stress distribution tends to stabilization, is needed in viability multiple
Reprocess, the safety and high efficiency of serious restriction coal resources.With being continuously increased for mining depth, the maintenance issues in this kind of tunnel
It will more protrude, and therefore, be badly in need of finding a kind of reasonable effective supporting construction of control extremely soft seam deformation of the surrounding rock in tunnel, can
The drastic deformation of mining induced roadway is controlled, continuous and effective of the supporting construction in tunnel viability is can guarantee that again.
Utility model content
The problem of especially roadway support of deep-well extremely soft seam is present in order to solve current colliery tunnel support, this practicality is new
Type provides a kind of U-shaped steel supporting construction in control pole weak seam tunnel, and the supporting construction, which can solve existing supporting construction, to be present
The problem of, while the bearing capacity and stability of supporting construction can be improved.It is convenient and simple in construction technology, with extensive
Practicality.
To reach above-mentioned purpose, the utility model uses following technical scheme：A kind of control pole weak seam tunnel it is U-shaped
Steel supporting construction, lock leg anchor pole and release are applied on basis of the extremely soft seam tunnel using traditional U-shaped steel bracket supporting
Drilling, lock leg anchor pole and destressing borehole are arranged between U-shaped steel bracket, and lock leg anchor pole locks leg anchor away from 300 ~ 500mm of roadway floor
Bar array pitch is with U-shaped steel bracket array pitch；Destressing borehole array pitch is with U-shaped steel bracket array pitch.
Described lock leg rock-bolt length 2000 ~ 3000mm, a diameter of 18 ~ 22mm；Wherein bottom row locks leg anchor pole away from lane
Road 300 ~ 500mm of bottom plate, 10 ~ 25 ° of the angle with horizontal direction, remaining lock leg anchor pole horizontal direction arrangement.
Deep 3000 ~ the 5000mm of described destressing borehole, aperture is 80 ~ 120mm；The folder that top pressure relief drills with horizontal direction
10 ~ 15 ° of angle arrangement, remaining destressing borehole horizontal direction arrangement.
Adjacent two lock leg anchor poles share a girder steel and are fixed between two U-shaped steel brackets.
Further, as a kind of specific structure type, U-shaped support described in the utility model is U29 or U36 types
Steel, lock leg anchor pole indulges muscle twisted steel anchor rod using left-handed nothing, and destressing borehole can directly be constructed using mining-drilling machine, simple side
Just.
Compared with prior art, the beneficial effects of the utility model are：Compared with single U-shaped steel supporting, leg anchor pole is locked
A certain size balancing force can be applied to U-shaped steel bracket, the moment of flexure in portion of reduction support side improves the stability in portion of side；Simultaneously
For extremely soft seam tunnel bulking deformation it is big the characteristics of, construct major diameter destressing borehole, pressure of the mitigation on U-shaped steel bracket
Power, both act synergistically, have played respective advantage, be integrally improved the working effect of U-shaped support.
Brief description of the drawings：
Fig. 1 is a kind of U-shaped steel supporting construction in this practical control pole weak seam tunnel；
Fig. 2 is Fig. 1 side view；
In figure：1-U shape steel brackets；2- locks leg anchor pole；3- destressing boreholes；4- girder steels.
Embodiment
An example of the present utility model is further described below in conjunction with the accompanying drawings：
Apply lock leg anchor pole 2 and destressing borehole 3 on the basis of the U-shaped supporting of steel bracket 1.Bottom row lock leg anchor pole 2
Away from 300 ~ 500mm of roadway floor, 10 ~ 25 ° of the angle with horizontal direction, length is 2000 ~ 3000mm；Remaining water of lock leg anchor pole 2
Square to arrangement, 18 ~ 22mm of bolt diameter, 500 ~ 700mm of spacing.Top pressure relief drilling 3 and 10 ~ 15 ° of the angle of horizontal direction
Arrangement, 3000 ~ 5000mm of length, remaining horizontal direction of destressing borehole 3 arrangement, aperture is 80 ~ 120mm, 600 ~ 800mm of spacing.
A kind of U-shaped steel supporting construction specific implementation method in control pole weak seam tunnel, including step：
1st, by roadway excavation to design section, U-shaped steel bracket 1,500 ~ 800mm of array pitch are set up.
2nd, construction lock leg anchor pole 2, the lock leg anchor pole of bottommost and the angle of horizontal direction are 10 ~ 25 °, remaining lock leg anchor pole
Horizontally disposed, spacing is 500 ~ 700mm, and array pitch is consistent with U-shaped steel bracket array pitch, adjacent two between two U-shaped steel brackets 1
Lock leg anchor pole 2 shares a girder steel 4 and is fixed, and girder steel 4 is processed using waste and old U-shaped steel or channel-section steel.
3rd, construction destressing borehole 3,80 ~ 100mm of bore diameter, 3000 ~ 5000mm of hole depth, wherein one row's destressing borehole of top
Angle with horizontal direction is 10 ~ 15 °.Remaining destressing borehole is arranged horizontally, and array pitch is consistent with U-shaped steel bracket array pitch.
The utility model provides a kind of U-shaped steel supporting construction in control pole weak seam tunnel, and extremely soft seam tunnel uses U
The serious interior shifting of roadway's sides, bottom plate are heaved strongly during shaped steel supporting, and rack bearing ability is substantially reduced.Applying lock leg anchor pole can be with
Canopy leg is in restrained condition, the stability and bearing capacity of support be improved significantly, while destressing borehole of constructing can drop
The stress concentration level of country rock near low tunnel, while certain Free up Memory can also be reserved for the bulking deformation of country rock, delays
The pressure that solution is acted on U-shaped steel bracket, improves the maintenance effects of support.The release that drills acts synergistically with lock leg anchor pole, can be with
Respective advantage is given full play to, effectively the stabilization in control extremely soft seam tunnel.More difficult high stress is safeguarded in metallic support
Tunnel, strong workings subject to dy namic pressure etc. are with a wide range of applications.
Claims (4)
1. a kind of U-shaped steel supporting construction in control pole weak seam tunnel, it is characterised in that：In extremely soft seam tunnel using tradition
U-shaped steel bracket（1）Apply lock leg anchor pole on the basis of supporting（2）And destressing borehole（3）, lock leg anchor pole（2）Bored with release
Hole（3）It is arranged at U-shaped steel bracket（1）Between, lock leg anchor pole（2）Away from 300 ~ 500mm of roadway floor, leg anchor pole is locked（2）The same U of array pitch
Shape steel bracket array pitch；Destressing borehole（3）Array pitch is with U-shaped steel bracket array pitch.
2. a kind of U-shaped steel supporting construction in control pole weak seam tunnel according to claim 1, it is characterised in that：Institute
The lock leg anchor pole stated（2）Length 2000 ~ 3000mm, a diameter of 18 ~ 22mm；Wherein bottom row locks leg anchor pole（2）Away from tunnel bottom
300 ~ 500mm of plate, 10 ~ 25 ° of the angle with horizontal direction, remaining lock leg anchor pole（2）Horizontal direction is arranged.
3. a kind of U-shaped steel supporting construction in control pole weak seam tunnel according to claim 1, it is characterised in that：Institute
The destressing borehole stated（3）Deep 3000 ~ 5000mm, aperture is 80 ~ 120mm；Top pressure relief drills（3）With the angle 10 of horizontal direction
~ 15 ° of arrangements, remaining destressing borehole（3）Horizontal direction is arranged.
4. a kind of U-shaped steel supporting construction in control pole weak seam tunnel according to claim 1 or 2, it is characterised in that：
Two U-shaped steel brackets（1）Between adjacent two locks leg anchor poles（2）Share a girder steel（4）It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621205350.2U CN206608188U (en) | 2016-11-09 | 2016-11-09 | A kind of U-shaped steel supporting construction in control pole weak seam tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621205350.2U CN206608188U (en) | 2016-11-09 | 2016-11-09 | A kind of U-shaped steel supporting construction in control pole weak seam tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206608188U true CN206608188U (en) | 2017-11-03 |
Family
ID=60170882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621205350.2U Expired - Fee Related CN206608188U (en) | 2016-11-09 | 2016-11-09 | A kind of U-shaped steel supporting construction in control pole weak seam tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206608188U (en) |
-
2016
- 2016-11-09 CN CN201621205350.2U patent/CN206608188U/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 |
Granted publication date: 20171103 |