CN205154181U - A supporting construction that is used for grooving method construction in advance in tunnel - Google Patents
A supporting construction that is used for grooving method construction in advance in tunnel Download PDFInfo
- Publication number
- CN205154181U CN205154181U CN201520830923.XU CN201520830923U CN205154181U CN 205154181 U CN205154181 U CN 205154181U CN 201520830923 U CN201520830923 U CN 201520830923U CN 205154181 U CN205154181 U CN 205154181U
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- advance
- lining cutting
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Abstract
The utility model relates to a supporting construction that is used for grooving method construction in advance in tunnel. The grooving method is before tunnel soil body excavation in advance, forms a continuous lining cutting in advance through grooving equipment in advance and struts, and furthest reduces the disturbance that tunnel excavation produced to the country rock, reduces the construction risk. The utility model discloses vertically build multichannel lining cutting in advance in country rock hunch portion inboard, the per pass is lining cutting tail end overlap joint to the top of the adjacent head end of lining cutting in advance, and all are executed and done the shotcrete screed -coat in the lining cutting inboard in advance, two linings of arch wall have been builded to shotcrete screed -coat inboard, country rock inverted arch portion has builded the inboard inverted arch and has just propped up and two linings of inverted arch, with the two lining cyclization concatenations of lining cutting in advance, shotcrete screed -coat and arch wall, supporting construction leads to long the setting along the tunnel. The utility model discloses can execute before tunnel excavation and make plain concrete or steel fiber concrete lining cutting structure in advance, reduce tunnel excavation and to the disturbance that the country rock produced, guarantee to carry on tunnel excavation under the condition of strutting, reduce the construction and subside, reduce the construction risk.
Description
Technical field
The utility model belongs to tunnel traffic field of engineering technology, is specifically related to a kind of supporting and protection structure for pre-cut channel process construction in tunnel.
Background technology
Along with China's tunnel construction is fast-developing, tunnel construction problems faced gets more and more, in the complicated geological country rock such as weak, broken, build tunnel also get more and more, how to reduce the disturbance of tunnel excavation to around rock (soil) body, control constructing tunnel sedimentation and deformation and just seem particularly important.
Pre-cut channel process, before tunnel soil body excavation, forms a pre-liner supporting structure of continuous print by precutting trough equipment, reduces the disturbance that tunnel excavation produces country rock to greatest extent, controls constructing tunnel sedimentation and deformation, reduce construction risk.Can tunneling boring Rapid Excavation be carried out under the protection of pre-lining cutting, reduce the duration, even can reduce investment.
Summary of the invention
The purpose of this utility model is to provide a kind of supporting and protection structure for pre-cut channel process construction in tunnel, is applicable to weakness, fragmented rock body tunnel.
The technical scheme that the utility model adopts is:
For a supporting and protection structure for pre-cut channel process construction in tunnel, it is characterized in that:
Inside country rock arch, longitudinally construct the pre-lining cutting of multiple tracks, per pass pre-lining cutting tail end snaps into the top of adjacent pre-lining cutting head end, has performed sprayed mortar leveling layer inside all pre-lining cutting;
Arch wall two lining has been constructed inside sprayed mortar leveling layer;
Construct inverted arch inside country rock inverted arch portion just to prop up and inverted arch two lining, served as a contrast into ring with pre-lining cutting, sprayed mortar leveling layer and arch wall two and splice.
Inverted arch just props up inside inner side and sprayed mortar leveling layer coplanar, serves as a contrast inner side coplanar inside inverted arch two serves as a contrast with arch wall two.
Described supporting and protection structure is elongated setting along tunnel.
The utility model has the following advantages:
The utility model effectively can reduce the disturbance that tunnel excavation produces country rock, controls constructing tunnel sedimentation and deformation, reduces construction risk.
Accompanying drawing explanation
Fig. 1 is the utility model longitudinal section.
Fig. 2 is Fig. 1 I-I cross section.
Fig. 3 is Fig. 1 II-II cross section.
In figure, the pre-lining cutting of 1-, the adjacent pre-lining cutting of 2-, 3-sprayed mortar leveling layer, 4-arch wall two serves as a contrast, and 5-inverted arch two serves as a contrast, and 6-inverted arch just props up, 7-country rock;
The L1-cutting at one time degree of depth, L2-just serves as a contrast lap length in advance.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in detail.
A kind of supporting and protection structure for pre-cut channel process construction in tunnel that the utility model relates to, the elongated setting along tunnel, soil body cutting grooving is carried out with the mechanical reaping hook that precutting trough equipment is special in country rock 7, pre-lining cutting 1 is constructed while cutting soil, longitudinally the pre-lining cutting 1 of multiple tracks is constructed inside country rock 7 arch, adjacent pre-just reserved certain lap length between lining 1, per pass pre-lining cutting 1 tail end snaps into the top of adjacent pre-lining cutting 1 head end, has performed sprayed mortar leveling layer 3 inside all pre-lining cutting 1.Construct arch wall two inside sprayed mortar leveling layer 3 and serve as a contrast 4.Constructed inside country rock 7 inverted arch portion inverted arch just prop up 6 and inverted arch two serve as a contrast 5, serve as a contrast 4 one-tenth rings with pre-lining cutting 1, sprayed mortar leveling layer 3 and arch wall two and splice.Country rock 7 is close in pre-lining cutting 1, and sprayed mortar leveling layer 3 is close to pre-lining cutting 1, and arch wall two serves as a contrast 4 and is close to sprayed mortar leveling layer 3.Inverted arch just prop up 6 inside with sprayed mortar leveling layer 3 inside coplanar, inverted arch two is coplanar inside serving as a contrast 4 with arch wall two inside serving as a contrast 5.
Pre-lining cutting 1, sprayed mortar leveling layer 3, arch wall two serve as a contrast 4, inverted arch just prop up 6 and inverted arch two serve as a contrast 5 for plain concrete or steel fiber reinforced concrete structure.
The utility model can apply plain concrete or the pre-liner structure of steel fibrous concrete before tunnel excavation, reduces the disturbance that tunnel excavation produces country rock, ensures to carry out tunnel excavation under support conditions, reduces construction settlement, reduces construction risk.
Content of the present utility model is not limited to cited by embodiment, and the conversion of those of ordinary skill in the art by reading the utility model manual to any equivalence that technical solutions of the utility model are taked, is claim of the present utility model and contains.
Claims (3)
1., for a supporting and protection structure for pre-cut channel process construction in tunnel, it is characterized in that:
Inside country rock (7) arch, longitudinally construct the pre-lining cutting of multiple tracks (1), the pre-lining cutting of per pass (1) tail end snaps into the top of adjacent pre-lining cutting (1) head end, and all pre-lining cutting (1) inner sides have performed sprayed mortar leveling layer (3);
Sprayed mortar leveling layer (3) inner side has been constructed arch wall two and has been served as a contrast (4);
Construct inverted arch inside country rock (7) inverted arch portion and just propped up (6) and inverted arch two serves as a contrast (5), served as a contrast (4) with pre-lining cutting (1), sprayed mortar leveling layer (3) with arch wall two and become ring to splice.
2. a kind of supporting and protection structure for pre-cut channel process construction in tunnel according to claim 1, is characterized in that:
Coplanar with sprayed mortar leveling layer (3) inner side inside inverted arch just props up (6), inverted arch two serves as a contrast (5) inner side and serves as a contrast inside (4) coplanar with arch wall two.
3. a kind of supporting and protection structure for pre-cut channel process construction in tunnel according to claim 1, is characterized in that:
Described supporting and protection structure is elongated setting along tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520830923.XU CN205154181U (en) | 2015-10-26 | 2015-10-26 | A supporting construction that is used for grooving method construction in advance in tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520830923.XU CN205154181U (en) | 2015-10-26 | 2015-10-26 | A supporting construction that is used for grooving method construction in advance in tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205154181U true CN205154181U (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520830923.XU Active CN205154181U (en) | 2015-10-26 | 2015-10-26 | A supporting construction that is used for grooving method construction in advance in tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205154181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843342A (en) * | 2018-08-15 | 2018-11-20 | 中铁第勘察设计院集团有限公司 | Realize the assembled preliminary bracing structure of tunnel quick closure |
-
2015
- 2015-10-26 CN CN201520830923.XU patent/CN205154181U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843342A (en) * | 2018-08-15 | 2018-11-20 | 中铁第勘察设计院集团有限公司 | Realize the assembled preliminary bracing structure of tunnel quick closure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180521 Address after: No. 10, Fuxing Road, Haidian District, Beijing Co-patentee after: China Railway First Survey & Design Institute Group Co., Ltd. Patentee after: CHINA RAILWAY CORPORATION Address before: 710043 Xiying Road, Xi'an, Xi'an, Shaanxi Patentee before: China Railway First Survey & Design Institute Group Co., Ltd. |