CN104047612A - Stretchable combined support structure for deep roadway - Google Patents
Stretchable combined support structure for deep roadway Download PDFInfo
- Publication number
- CN104047612A CN104047612A CN201410293501.3A CN201410293501A CN104047612A CN 104047612 A CN104047612 A CN 104047612A CN 201410293501 A CN201410293501 A CN 201410293501A CN 104047612 A CN104047612 A CN 104047612A
- Authority
- CN
- China
- Prior art keywords
- layer
- contractibility
- concrete
- deep
- metallic framework
- 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.)
- Pending
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a stretchable combined support structure for a deep roadway. The stretchable combined support structure for the deep roadway is composed of three layers. The outermost layer is an anchor net spraying support composed of an anchor rod, an anchor cable, a steel bar net, concrete and the like and mainly plays a role in reinforcement of surrounding rocks and primary support; the middle layer is a flexible layer and rigid layer combined structure composed of two flexible material layers and a rigid material layer in the middle and mainly plays a role in buffering and energy absorption; the innermost layer is a mixed layer composed of a stretchable metal framework and concrete and mainly plays a role in final support. The stretchable combined support structure for the deep roadway is well suitable for supporting a soft rock roadway of a complex geological structure and with deep ground pressure greatly damaged, and the support effect combining rigidity and flexibility is achieved.
Description
Technical field:
The present invention relates to colliery tunnel support field, be particularly useful for complicated geological and deep rock thrust and destroy larger Soft rock tunnel supporting.
Background technology:
Tunnel is the important channel of carrying out the systems such as underground mine transport, ventilation, draining, power supply, is the key point that mine is produced continuity.The good stability of the roadway of shallow pay producing or geological conditions is good, and dynamic pressure breakoff phenomenon is not serious.But along with China's coal-mine resource exploitation develops to deep gradually, complicated condition, geostatic stress is large, the generation frequency of dynamic pressure is more and more, especially for the roadway support of deep weak stratum, its harmfulness also increases further, causes roadway surrounding rock to destroy, collapse and personnel casualty accidents, and Safety of Coal Mine Production is caused to great harm.Although taked in recent years many measures, do not obtained how many achievements for Deep Geological Structures complexity and the larger Soft rock tunnel supporting of ground pressure breaking.Visible, the preventing and controlling task of China's Deep Soft Rock Tunnel is very arduous, has real urgency and long-range important meaning.
To accomplish 2 points for complicated geological and the larger Soft rock tunnel supporting key of deep rock thrust destruction: the first, supporting and protection structure must be controlled the distortion that roadway surrounding rock is larger, the second, to a certain extent appropriateness distortion that must suitable for surrounding rock, can not be very stiff and demanding.And more existing conventional arts all can not meet these 2 requirements substantially well simultaneously, as i iron or U-shaped steel supporting, anchor rete cord or bolt-grouting support, coupling supporting.A kind of deep tunnel contractibility of the present invention composite supporting construction is made up of three layer construction, and particularly intermediate layer has buffering and endergonic effect, can accomplish well above 2 points, the effect that reaches hard and soft and deposit.This invention is to ensureing that Safety of Coal Mine Production has important actual application value.
Summary of the invention:
Problem to be solved by this invention is to provide a kind of complicated geological and larger Soft rock tunnel supporting and protection structure of deep rock thrust destruction of being applicable to.
The technical solution adopted in the present invention is: a kind of deep tunnel contractibility composite supporting construction is made up of three layer construction, and outermost layer is anchor net spray supporting, intermediate layer is flexible and rigid lamination structure, innermost layer are contractibility metallic framework and concrete mixed layer.
Described outermost layer is that anchor net spray supporting is made up of anchor pole, anchor cable, steel mesh reinforcement, concrete etc., and described rock-bolt length is 1.2～1.5m, and spacing is 0.5m left and right, and pretightning force is 40～70kN; Described anchor cable length 5～10m, concrete length is chosen according to engineering specifications, and spacing is not less than 1/3rd of anchor cable length, is generally only arranged in the top country rock in tunnel; The bar diameter of described steel mesh reinforcement is not less than 5mm, and grid is in 120mm × 120mm left and right; Described concrete jet thickness is no less than 200mm.Outermost layer mainly plays reinforce adjoining rock and preliminary support action.
Described intermediate layer is flexible and rigid lamination structure is made up of two layers of flexible material and therebetween one deck rigid material, described flexible material is generally chosen the rubber of high elastic deformation capacity, its outer field rubber layer thickness is 0.4m left and right, and the rubber layer thickness of internal layer is 0.3m left and right; The folded rigid material in described centre is generally chosen steel plate, and its thickness is 80～150mm, and concrete thickness is chosen according to geological structural complexity and ground pressure breaking size degree, and general geological structure is more complicated or ground pressure breaking is larger, and the thickness of steel plate is just thicker.The effect of buffering and energy-absorbing is mainly played in intermediate layer.
Described innermost layer is that the mixed layer that contractibility metallic framework and concrete mix is made up of contractibility metallic framework and concrete, the reinforcing bar that the reinforcing bar that described contractibility metallic framework is is 20mm by diameter and diameter are 10mm is worked out, the reinforcing bar that wherein diameter is 20mm is as girder reinforcing bar, diameter is that the reinforcing bar of 10mm is as connecting reinforcement, connecting reinforcement and girder reinforcing bar are by the space crossed triangle that is woven into, main object is that triangle has stability, thereby ensures the stability of whole support body; Described concrete is injected in above contractibility metallic framework, is connected as a single entity with contractibility metallic framework, and the thickness of injection is not less than 1m.Innermost layer mainly plays final support action.
Advantage and good effect that the present invention has are: a kind of deep tunnel contractibility of the present invention composite supporting construction is made up of three layer construction, particularly intermediate layer has buffering and endergonic effect, complicated geological and deep rock thrust be can be applicable to well and larger Soft rock tunnel supporting, the supporting effect that reaches hard and soft and deposit destroyed.
Brief description of the drawings:
Fig. 1 is that a kind of deep tunnel contractibility of the present invention composite supporting construction is arranged schematic diagram;
Fig. 2 is rubber and the steel plate laminate structures variation schematic diagram in stressed front and back;
Fig. 3 is contractibility metallic framework schematic diagram;
Fig. 4 is contractibility metallic framework cut-away view;
Fig. 5 is contractibility metallic framework connecting board structure figure.
Wherein: 1-anchor pole, 2-anchor cable, 3-shell, the first concrete spray coating of 4-, 5-rubber layer, 6-steel plate layer, 7-steel plate layer junction plate, 8-contractibility metallic framework junction plate, 9-contractibility metallic framework, 10-concrete spray coating, 11-girder reinforcing bar, 12-connecting reinforcement, 13-connecting bolt, 14-attaching nut again.
Detailed description of the invention:
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in detail.
As shown in Figure 1, a kind of deep tunnel contractibility composite supporting construction of the present invention is made up of three layer construction, and outermost layer is anchor net spray supporting, intermediate layer is flexible and rigid lamination structure, innermost layer are contractibility metallic framework and concrete mixed layer.
First be that anchor net spray supporting is carried out in tunnel to digging, taking spacing as 0.5m, left and right is arranged in country rock the anchor pole 1 that is first 1.2～1.5m by length, slip casting is arranged net again, last sprayed mortar, make tunnel superficial part country rock form the shell 3 that thickness is not less than 1m, after the roadway surrounding rock of anchor net spray supporting is basicly stable, then anchor cable 2 is arranged in the top country rock in tunnel, shell 3 is played to reinforcement effect.
Then arrange intermediate layer, i.e. the layout of flexibility and rigid lamination structure.The outside rubber layer 5 that first thickness is about to 0.4m is arranged in above the tunnel inwall after anchor net spray, arrange again steel plate layer 6, its light plate layer 6 is to be stitched together by steel plate layer junction plate 7 by plurality of steel plates, and last layout thickness is again about the inner rubber 5 of 0.3m.As shown in Figure 2, when bump comes interim, its rubber and steel plate laminate structures be in the variation of stressed front and back, can find out that buffering (power is by behind intermediate layer, and stressed to become face stressed by point) and the energy-absorbing (two-layer rubber layer can absorb certain energy) in intermediate layer acts on.
As shown in Fig. 3, Fig. 4, Fig. 5, finally arrange contractibility metallic framework and concrete mixed layer, after first the contractibility metallic framework 9 of having worked out being connected by contractibility metallic framework junction plate 8, be arranged in through in above tunnel after treatment, again to contractibility metallic framework 9 sprayed mortars, form steel bar mesh shell liner structure, play final support action.
Claims (7)
1. a deep tunnel contractibility composite supporting construction is made up of three layer construction, it is characterized in that: outermost layer is anchor net spray supporting, intermediate layer is flexible and rigid lamination structure, innermost layer are contractibility metallic framework and concrete mixed layer.
2. deep tunnel contractibility composite supporting construction as claimed in claim 1, it is characterized in that: described outermost layer is that anchor net spray supporting is made up of anchor pole, anchor cable, steel mesh reinforcement, concrete etc., described rock-bolt length is 1.2～1.5m, and spacing is 0.5m left and right, and pretightning force is 40～70kN; Described anchor cable length 5～10m, concrete length is chosen according to engineering specifications, and spacing is not less than 1/3rd of anchor cable length, is generally only arranged in the top country rock in tunnel; The bar diameter of described steel mesh reinforcement is not less than 5mm, and grid is in 120mm × 120mm left and right; Described concrete sprays and is no less than 200mm.
3. deep tunnel contractibility composite supporting construction as claimed in claim 1, it is characterized in that: described intermediate layer is flexible and rigid lamination structure is made up of two layers of flexible material and therebetween one deck rigid material, described flexible material is generally chosen the rubber of high elastic deformation capacity, its outer field rubber layer thickness is 0.4m left and right, and the rubber layer thickness of internal layer is 0.3m left and right; The folded rigid material in described centre is generally chosen steel plate, and its thickness is 80～150mm.
4. deep tunnel contractibility composite supporting construction as claimed in claim 3, it is characterized in that: the concrete thickness of described steel plate is chosen according to geological structural complexity and ground pressure breaking size degree, general geological structure is more complicated or ground pressure breaking is larger, and the thickness of steel plate is just thicker.
5. deep tunnel contractibility composite supporting construction as claimed in claim 3, is characterized in that: described flexible layer and rigid layer not only refer to rubber layer and steel plate, comprises all flexible materials and rigid material.
6. deep tunnel contractibility composite supporting construction as claimed in claim 1, it is characterized in that: described innermost layer is that contractibility metallic framework and concrete mixed layer are made up of contractibility metallic framework and concrete, the reinforcing bar that the reinforcing bar that described contractibility metallic framework is is 20mm by diameter and diameter are 10mm forms by space crossed triangularity braiding; Described concrete is injected in above contractibility metallic framework, is connected as a single entity with contractibility metallic framework, and the thickness of injection is not less than 1m.
7. deep tunnel contractibility composite supporting construction as described in claim 1 to 6 any one, is characterized in that: described Zhi Fuhe protection structure is shaped as circle, the shape of a hoof, arch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410293501.3A CN104047612A (en) | 2014-06-25 | 2014-06-25 | Stretchable combined support structure for deep roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410293501.3A CN104047612A (en) | 2014-06-25 | 2014-06-25 | Stretchable combined support structure for deep roadway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104047612A true CN104047612A (en) | 2014-09-17 |
Family
ID=51500963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410293501.3A Pending CN104047612A (en) | 2014-06-25 | 2014-06-25 | Stretchable combined support structure for deep roadway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104047612A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673040A (en) * | 2016-03-10 | 2016-06-15 | 安徽理工大学 | Bearing system of deep well high-stress roadway surrounding rock enhanced support and application of bearing system |
| CN106640146A (en) * | 2017-03-07 | 2017-05-10 | 安徽理工大学 | Three-dimensional steel bar net rack and concrete combined lining structure |
| CN106703840A (en) * | 2017-01-10 | 2017-05-24 | 中铁第勘察设计院集团有限公司 | Energy-dissipation support structure for tunnel under large-deformation surrounding rock condition |
| CN111255485A (en) * | 2020-03-03 | 2020-06-09 | 中煤科工集团重庆研究院有限公司 | Deep well roadway supporting structure and construction method |
| CN112523776A (en) * | 2020-11-23 | 2021-03-19 | 安徽理工大学 | Thin bedrock supporting construction |
| CN112647969A (en) * | 2020-12-25 | 2021-04-13 | 山东大学 | Traffic tunnel surrounding rock cooperative control system and construction method |
| CN114165269A (en) * | 2022-02-14 | 2022-03-11 | 山东建筑大学 | Composite support system based on reinforced concrete combined support and spraying arch and construction process thereof |
| CN117307191A (en) * | 2023-11-28 | 2023-12-29 | 中煤科工开采研究院有限公司 | Rock burst roadway anchor-frame-charging coupling support system, method and monitoring system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274795A (en) * | 1988-09-08 | 1990-03-14 | Ichiro Fukai | Tunnel and construction method for tunnel |
| JPH074195A (en) * | 1993-06-14 | 1995-01-10 | Fujita Corp | Starting port closing device for shield machine |
| CN2763513Y (en) * | 2005-01-11 | 2006-03-08 | 姜有 | Flexible building block structure |
| CN103046934A (en) * | 2012-12-14 | 2013-04-17 | 太原理工大学 | Method retaining and protecting soft surrounding rock roadways by placing hole pressure relief materials |
| CN103742178A (en) * | 2014-01-06 | 2014-04-23 | 安徽理工大学 | Deep underground roadway support mechanism |
| CN203925516U (en) * | 2014-06-25 | 2014-11-05 | 安徽理工大学 | A kind of deep tunnel contractibility composite supporting construction |
-
2014
- 2014-06-25 CN CN201410293501.3A patent/CN104047612A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274795A (en) * | 1988-09-08 | 1990-03-14 | Ichiro Fukai | Tunnel and construction method for tunnel |
| JPH074195A (en) * | 1993-06-14 | 1995-01-10 | Fujita Corp | Starting port closing device for shield machine |
| CN2763513Y (en) * | 2005-01-11 | 2006-03-08 | 姜有 | Flexible building block structure |
| CN103046934A (en) * | 2012-12-14 | 2013-04-17 | 太原理工大学 | Method retaining and protecting soft surrounding rock roadways by placing hole pressure relief materials |
| CN103742178A (en) * | 2014-01-06 | 2014-04-23 | 安徽理工大学 | Deep underground roadway support mechanism |
| CN203925516U (en) * | 2014-06-25 | 2014-11-05 | 安徽理工大学 | A kind of deep tunnel contractibility composite supporting construction |
Non-Patent Citations (1)
| Title |
|---|
| 张宗伟: "强挤压围岩隧道施工合理支护问题的探讨", 《铁路长大隧道设计施工技术研讨会论文集》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673040A (en) * | 2016-03-10 | 2016-06-15 | 安徽理工大学 | Bearing system of deep well high-stress roadway surrounding rock enhanced support and application of bearing system |
| CN106703840A (en) * | 2017-01-10 | 2017-05-24 | 中铁第勘察设计院集团有限公司 | Energy-dissipation support structure for tunnel under large-deformation surrounding rock condition |
| CN106640146A (en) * | 2017-03-07 | 2017-05-10 | 安徽理工大学 | Three-dimensional steel bar net rack and concrete combined lining structure |
| CN106640146B (en) * | 2017-03-07 | 2020-02-07 | 安徽理工大学 | Three-dimensional reinforced bar net frame and concrete combined lining structure |
| CN111255485A (en) * | 2020-03-03 | 2020-06-09 | 中煤科工集团重庆研究院有限公司 | Deep well roadway supporting structure and construction method |
| CN112523776A (en) * | 2020-11-23 | 2021-03-19 | 安徽理工大学 | Thin bedrock supporting construction |
| CN112523776B (en) * | 2020-11-23 | 2022-03-08 | 安徽理工大学 | Thin bedrock supporting construction |
| CN112647969A (en) * | 2020-12-25 | 2021-04-13 | 山东大学 | Traffic tunnel surrounding rock cooperative control system and construction method |
| CN112647969B (en) * | 2020-12-25 | 2021-11-23 | 山东大学 | Traffic tunnel surrounding rock cooperative control system and construction method |
| CN114165269A (en) * | 2022-02-14 | 2022-03-11 | 山东建筑大学 | Composite support system based on reinforced concrete combined support and spraying arch and construction process thereof |
| CN117307191A (en) * | 2023-11-28 | 2023-12-29 | 中煤科工开采研究院有限公司 | Rock burst roadway anchor-frame-charging coupling support system, method and monitoring system |
| CN117307191B (en) * | 2023-11-28 | 2024-03-22 | 中煤科工开采研究院有限公司 | Rock burst roadway anchor-frame-charging coupling support system, method and monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104047612A (en) | Stretchable combined support structure for deep roadway | |
| CN105178981B (en) | The closed depth coupling of broken soft rock roadway full-fracture-surfacanchoring-rod, which allows, presses bolt-grouting support method | |
| CN102493821B (en) | Support method for high stress roadway coal-rock mass | |
| CN203145958U (en) | Tunnel double-layer duct piece ring structure | |
| CN104533453A (en) | Substep dynamic coupling support method for roadway fault fracture zone | |
| CN104847381A (en) | Buffer-energy absorption high resistance coupling support method of deep roadway | |
| CN102562091A (en) | Foam concrete shock absorbing structure of tunnel and construction method of foam concrete shock absorbing structure | |
| CN203925516U (en) | A kind of deep tunnel contractibility composite supporting construction | |
| CN104975861A (en) | Non-disturbance type supporting structure used for tunnel vault collapsed cavity processing | |
| CN102562097A (en) | Three-dimensional asymmetrical supporting system | |
| CN204002836U (en) | The high-strength yield supporting structure of heavily stressed broken soft rock chamber | |
| CN205370580U (en) | Deep is moved by force and is carried tunnel scour protection resistance to compression supporting construction | |
| CN107044288A (en) | Prefabricated support lining structure and construction method for large-deformation tunnel in soft rock | |
| CN103628583A (en) | Assembled type movable blast wall | |
| CN210564548U (en) | Tunnel combined supporting system under strong to extremely strong rockburst condition | |
| CN103993893A (en) | Underground construction three-dimensional reinforcing steel bar polypropylene fiber concrete support | |
| CN102287207B (en) | Assembling jacking method in relation to serious collapse of small-section tunnel | |
| CN102619539A (en) | Mining fast energy absorption erosion prevention yielding component | |
| CN109577989B (en) | Novel deep mine shaft wall structure and construction method | |
| CN202360107U (en) | Tunnel foam concrete shock-absorbing structure | |
| CN100425803C (en) | Composite lining suitable for surrounding rock after-deformation | |
| CN207776879U (en) | A kind of deformation buffer structure applied in the larger tunnel of pressure from surrounding rock | |
| CN106522991B (en) | Roadway anchor-shotcrete support flexible integral concrete shotcrete layer and construction method thereof | |
| CN203626351U (en) | Protective wall | |
| CN104632248A (en) | Protection and treatment method for tunnel top karst cave |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140917 |