CN106640130A - Side-top arch collapse cavity supporting system and method for super-large-section tunnel in plateau region - Google Patents
Side-top arch collapse cavity supporting system and method for super-large-section tunnel in plateau region Download PDFInfo
- Publication number
- CN106640130A CN106640130A CN201611017025.8A CN201611017025A CN106640130A CN 106640130 A CN106640130 A CN 106640130A CN 201611017025 A CN201611017025 A CN 201611017025A CN 106640130 A CN106640130 A CN 106640130A
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- China
- Prior art keywords
- vault
- arch
- support system
- chamber
- section
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000004567 concrete Substances 0.000 claims abstract description 23
- 238000009412 basement excavation Methods 0.000 claims description 21
- 231100000241 scar Toxicity 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a side-top arch collapse cavity supporting system and method for a super-large-section tunnel in a plateau region. The aim of primary supporting of a side-top arch collapse cavity in a portal of the super-large-section tunnel in the plateau region is achieved. According to the system, the arch top collapse cavity (2) is formed in the arch top of a large-section excavated portal outline (1); a main arch supporting system (3) is arranged under the arch top of the large-section excavated portal outline; an auxiliary arch supporting frame (4) is fixedly welded to a main arch frame of the main arch supporting system (3); an anchor cable supporting system (5) is arranged at the outer edge of the arch top collapse cavity (2); an anchor rod supporting system (6) is arranged on the top of the arch top collapse cavity (2); and the rock surface of the large-section excavated portal outline (1) and the rock surface of the arch top collapse cavity (2) are provided with primary supporting concrete jet layers (7). By means of the system and method, the aim of primary supporting of the super-large-section tunnel in a water-rich rock stratum in the plateau region is achieved, and the effects that field construction is easy, supporting is stable and the project period is shortened are achieved.
Description
Technical field
The present invention relates to a kind of tunnel support system, more particularly to a kind of Super-large-section tunnel occurs collapsing behind chamber after excavating,
Support system and method for protecting support to hole Ti Ta chambers.
Background technology
When excavating Super-large-section tunnel in the rich water rock stratum of highlands, barrel country rock is complicated, the meeting in digging process
Run into each class surrounding rock.Because tunnel cross-section is larger, there is the erosion of rock crack water, after the completion of excavation, have at side and roof arch again
When can occurrence of large-area landslide, formation collapses chamber.When preliminary bracing is carried out to hole body, if to large-area chamber of collapsing using traditional
When anchor pole, reinforced mesh and gunite concrete preliminary bracing, it may appear that supporting is unstable, the concrete easily caused in injection is whole
Body slump.In addition, highlands severe cold region, to the chamber of collapsing at the top of the body of big cross section hole remediation is carried out, there is operation pressure
Greatly, the problem of construction period length.
The content of the invention
Chamber support system and method for protecting support the invention provides a kind of highlands Super-large-section tunnel side and roof arch collapses, solve
Side and roof arch in highlands Super-large-section tunnel hole body collapses the difficult problem of chamber preliminary bracing.
The present invention is to solve above technical problem by the following technical programs：
A kind of highlands Super-large-section tunnel side and roof arch collapses chamber support system, including large cross section excavation hole body profile, is breaking greatly
Face is excavated and has vault at the vault of hole body profile and collapse chamber, and in large cross section excavation hole, the scar and vault of body profile collapses the rock in chamber
Preliminary bracing concrete ejection layer is provided with face, main arch support is provided with immediately below the vault of large cross section excavation hole body profile
System, is fixedly welded with subarch bracing frame on the main arch of main arch support system, arranges on the outer ledge that vault collapses chamber
There is cable support system, anchor support system is provided with the top of vault collapses chamber.
Concrete Filled body is provided between the main arch and preliminary bracing concrete ejection layer of main arch support system, it is main
Bow member and subarch bracing frame are enclosed in Concrete Filled body.
A kind of highlands Super-large-section tunnel side and roof arch collapses chamber method for protecting support, comprises the following steps：
The first step, excavation Super-large-section tunnel hole body, form large cross section excavation hole body profile, and in big cross section hole, the vault of body occurs
There is vault to collapse chamber, on the scar that vault collapses chamber preliminary bracing concrete is sprayed, carry out scar closing；
Cable support system is performed at second step, the abutment wall of large cross section excavation hole body profile on the outside of vault collapses chamber；In vault
Collapse and perform anchor support system at the top of chamber；
3rd step, in the body of Super-large-section tunnel hole install main arch support system, main arch support system top install subarch
Collapse against vault the crag in chamber on bracing frame, the top for making subarch bracing frame；
4th step, ejection supporting concrete layer, closing subarch and main arch, reach main arch and subarch and the closely knit combination of crag, are formed
One supports overall.
The total inventive concept of the present invention is：First carrying out just spray concrete to the crag of the cavity that collapses on the main arch of supporting in the early stage is carried out
Closing, then, using prestressed anchor supporting is carried out, and finally constructs subarch support, the mixed mud of top of chamber injection that collapses after support
Soil, makes collapse chamber and vault one stable support system of formation.Before processing is being carried out to the cavity that collapses, first abutment wall must carried out
Cable bolting, to play the support action for strengthening opposite side dike-rock body.
The present invention solves a preliminary bracing difficult problem for Super-large-section tunnel in the rich water rock stratum of highlands, performs with scene
Simply, material less investment, stable and the saving duration the effect of supporting.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in detail：
A kind of highlands Super-large-section tunnel side and roof arch collapses chamber support system, excavates Super-large-section tunnel hole body, forms big disconnected
Hole body profile 1 is excavated in face, at the body wall rock loosening of hole, can be had vault at the vault of large cross section excavation hole body profile 1 and be collapsed
Chamber 2, when the vault area of chamber 2 that collapses is larger, when depth is deeper, can have a strong impact on the preliminary bracing for having excavated hole body, make using tradition
Preliminary bracing measure, it is impossible to play expected effect, and new landslide hidden danger can be produced；In large cross section excavation hole body profile 1
Scar and vault collapse chamber 2 scar on first spray preliminary bracing concrete, anchor cable is set on the outer ledge that vault collapses chamber 2
Support body system 5, plays a part of stable vault and collapses the present position abutment wall of chamber 2, and at the collapse top in chamber 2 of vault anchor support system is performed
6, collapsed the effect in chamber 2 with reaching firm vault, then, the mounted master immediately below the vault of large cross section excavation hole body profile 1
Fixed welding subarch bracing frame 4 on the main arch of arch brace system 3, makes collapse to the vault rock mass in chamber 2 of subarch bracing frame 4 play
Support is acted on, and finally, ejection supporting concrete layer 7 closes subarch and main arch.
Concrete Filled body is provided between the main arch and preliminary bracing concrete ejection layer 7 of main arch support system 3,
Main arch and subarch bracing frame 4 are enclosed in Concrete Filled body.
Super-large-section tunnel hole body is excavated, large cross section excavation hole body profile 1 is formed, at the body wall rock loosening of hole, can be big
Abutment wall is had at the abutment wall of section excavation hole body profile 1 to collapse chamber, and cable support body is performed on the outer ledge that abutment wall collapses chamber
System, performs anchor support system in abutment wall collapses chamber, and subarch bracing frame is performed in abutment wall collapses chamber, last ejection supporting coagulation
Soil layer, closing subarch and main arch.
A kind of highlands Super-large-section tunnel side and roof arch collapses chamber method for protecting support, comprises the following steps：
The first step, Super-large-section tunnel hole body is excavated, form large cross section excavation hole body profile 1, the vault of body goes out in big cross section hole
Existing vault collapses chamber 2, and on the scar that vault collapses chamber 2 preliminary bracing concrete is sprayed, and carries out scar closing；
Second step, vault collapse the large cross section excavation hole body profile 1 in the outside of chamber 2 abutment wall at perform cable support system 5；In arch
The top for pushing up chamber 2 of collapsing performs anchor support system 6；
3rd step, in the body of Super-large-section tunnel hole main arch support system 3 is installed, installs secondary at the top of main arch support system 3
Collapse against vault the crag in chamber 2 on arch brace frame 4, the top for making subarch bracing frame 4；
4th step, ejection supporting concrete layer 7, closing subarch and main arch, reach main arch and subarch and the closely knit combination of crag, are formed
One supports overall.
Claims (3)
1. a kind of highlands Super-large-section tunnel side and roof arch collapses chamber support system, including large cross section excavation hole body profile（1）,
Large cross section excavation hole body profile（1）Vault at have vault and collapse chamber（2）, it is characterised in that in large cross section excavation hole body wheel
It is wide（1）Vault immediately below be provided with main arch support system（3）, in main arch support system（3）Main arch on be fixedly welded with
Subarch bracing frame（4）, collapse chamber in vault（2）Outer ledge on be provided with cable support system（5）, collapse chamber in vault（2）'s
Top is provided with anchor support system（6）, in large cross section excavation hole body profile（1）Scar and vault collapse chamber（2）Scar on
It is provided with preliminary bracing concrete ejection layer（7）.
2. a kind of highlands Super-large-section tunnel side and roof arch according to claim 1 collapses chamber support system, and its feature exists
In in main arch support system（3）Main arch and preliminary bracing concrete ejection layer（7）Between be provided with Concrete Filled body,
Main arch and subarch bracing frame（4）In being enclosed in Concrete Filled body.
3. a kind of highlands Super-large-section tunnel side and roof arch collapses chamber method for protecting support, comprises the following steps：
The first step, excavation Super-large-section tunnel hole body, form large cross section excavation hole body profile（1）, in the vault of big cross section hole body
Have vault to collapse chamber（2）, collapse chamber in vault（2）Scar on spray preliminary bracing concrete, carry out scar closing；
Second step, collapse chamber in vault（2）The large cross section excavation hole body profile in outside（1）Abutment wall at perform cable support system
（5）；Collapse chamber in vault（2）Top perform anchor support system（6）；
3rd step, in the body of Super-large-section tunnel hole install main arch support system（3）, in main arch support system（3）Top peace
Dress subarch bracing frame（4）, make subarch bracing frame（4）Top collapse chamber against vault（2）Crag；
4th step, ejection supporting concrete layer（7）, subarch and main arch are closed, reach main arch and subarch and the closely knit combination of crag, shape
Support overall into one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611017025.8A CN106640130A (en) | 2016-11-19 | 2016-11-19 | Side-top arch collapse cavity supporting system and method for super-large-section tunnel in plateau region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611017025.8A CN106640130A (en) | 2016-11-19 | 2016-11-19 | Side-top arch collapse cavity supporting system and method for super-large-section tunnel in plateau region |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106640130A true CN106640130A (en) | 2017-05-10 |
Family
ID=58808678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611017025.8A Pending CN106640130A (en) | 2016-11-19 | 2016-11-19 | Side-top arch collapse cavity supporting system and method for super-large-section tunnel in plateau region |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106640130A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814736A (en) * | 2020-12-31 | 2021-05-18 | 新疆北新路桥集团股份有限公司 | Tunnel collapse treatment method |
| CN113107536A (en) * | 2021-04-20 | 2021-07-13 | 中国安能集团第三工程局有限公司 | Side roof arch cavity collapse supporting system and method for fault fracture zone diversion tunnel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203321531U (en) * | 2013-06-27 | 2013-12-04 | 中国水电顾问集团成都勘测设计研究院 | Lining processing structure for underground cavern after collapse of top arch |
| CN203867593U (en) * | 2014-06-08 | 2014-10-08 | 衢州市优德工业设计有限公司 | Underground construction roadway pressure yielding supporting system |
| CN104975861A (en) * | 2015-07-21 | 2015-10-14 | 招商局重庆交通科研设计院有限公司 | Non-disturbance type supporting structure used for tunnel vault collapsed cavity processing |
| CN204851291U (en) * | 2015-08-11 | 2015-12-09 | 中国电建集团贵阳勘测设计研究院有限公司 | Tunnel collapse supporting construction |
| CN206299389U (en) * | 2016-11-19 | 2017-07-04 | 中铁二十一局集团第六工程有限公司 | Highlands Super-large-section tunnel side and roof arch collapses chamber support system |
-
2016
- 2016-11-19 CN CN201611017025.8A patent/CN106640130A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203321531U (en) * | 2013-06-27 | 2013-12-04 | 中国水电顾问集团成都勘测设计研究院 | Lining processing structure for underground cavern after collapse of top arch |
| CN203867593U (en) * | 2014-06-08 | 2014-10-08 | 衢州市优德工业设计有限公司 | Underground construction roadway pressure yielding supporting system |
| CN104975861A (en) * | 2015-07-21 | 2015-10-14 | 招商局重庆交通科研设计院有限公司 | Non-disturbance type supporting structure used for tunnel vault collapsed cavity processing |
| CN204851291U (en) * | 2015-08-11 | 2015-12-09 | 中国电建集团贵阳勘测设计研究院有限公司 | Tunnel collapse supporting construction |
| CN206299389U (en) * | 2016-11-19 | 2017-07-04 | 中铁二十一局集团第六工程有限公司 | Highlands Super-large-section tunnel side and roof arch collapses chamber support system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814736A (en) * | 2020-12-31 | 2021-05-18 | 新疆北新路桥集团股份有限公司 | Tunnel collapse treatment method |
| CN112814736B (en) * | 2020-12-31 | 2023-01-31 | 新疆北新路桥集团股份有限公司 | Tunnel collapse treatment method |
| CN113107536A (en) * | 2021-04-20 | 2021-07-13 | 中国安能集团第三工程局有限公司 | Side roof arch cavity collapse supporting system and method for fault fracture zone diversion tunnel |
| CN113107536B (en) * | 2021-04-20 | 2024-05-03 | 中国安能集团第三工程局有限公司 | Supporting system and method for side-roof arch collapse cavity of fracture-zone diversion tunnel |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170510 |
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| WD01 | Invention patent application deemed withdrawn after publication |