CN208416561U - A kind of Mountain Tunnels half-open and half-hidden structure - Google Patents
A kind of Mountain Tunnels half-open and half-hidden structure Download PDFInfo
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- CN208416561U CN208416561U CN201820798156.2U CN201820798156U CN208416561U CN 208416561 U CN208416561 U CN 208416561U CN 201820798156 U CN201820798156 U CN 201820798156U CN 208416561 U CN208416561 U CN 208416561U
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Abstract
The utility model relates to a kind of Mountain Tunnels half-open and half-hidden structure, the structure includes open cut tunnel part and dark cavity portion, and dark cavity portion is performed in hillside natural slope hereinafter, open cut tunnel part is located at the hollow part of hillside natural slope or more, on the outside of dark cavity portion；Open cut tunnel part includes that steel grating concrete protects arch and the big abutment wall on the outside of it, and steel grating concrete protects above arch, is backfilled with C20 concrete on the inside of big abutment wall, and backfill C20 concrete top is bottom-up successively to have performed waterproof layer, native rock layers and clay water barrier；The liner structure of open cut tunnel part and dark cavity portion is in overall construction, and steel grating concrete shield arch is covered in outside the liner structure of open cut tunnel part, and arch wall bottom is connect with big abutment wall bottom on the outside of lining cutting.The utility model is suitable for being close to mountain shallow embedding, local hollow Tunnel Engineering, the structure type combined by light and shade and construction way, efficiently solves the technical problem that tunnel is arranged under hazy orographic condition.
Description
Technical field
The utility model Tunnel Design, technical field of construction, and in particular to a kind of Mountain Tunnels half-open and half-hidden structure.
Background technique
China is the country on mountain more than one, and mountain area area greatly exceeds plain regions, accounts for about the whole nation 2/3, mountain range structure
At Chinese geography, the skeleton of China map and Chinese topography.Therefore, the works such as a large amount of railway, highway certainly will be built in mountain area
Journey considers investment reduction or the limitation of other technologies condition, cannot excessively build the big super long tunnel of buried depth, it is difficult to avoid to encounter
It is close to mountain shallow embedding, local hollow Tunnel Engineering, since hillside is generally more steep, and surface is covered with vegetation, can not directly brush
Slope excavates and does open cut tunnel, again hollow in the outer part directly to construct by dark hole engineering method.Such office's work point often becomes control line
The important factor in order of road position even changes the whole trend of route sometimes, brings a series of technical problem.
Summary of the invention
The purpose of the utility model is to provide a kind of Mountain Tunnels half-open and half-hidden structure and its construction methods, to extreme terrain
Under the conditions of Tunnel Engineering structure and construction rationally designed, engineering is completed safely, reach ensure it is whole
The purpose of a impregnable construction of project.
The technology employed by the present utility model is
A kind of Mountain Tunnels half-open and half-hidden structure, it is characterised in that:
The structure includes open cut tunnel part and dark cavity portion, and dark cavity portion is performed in hillside natural slope hereinafter, open cut tunnel portion
Quartile hollow part more than the natural slope of hillside, on the outside of dark cavity portion；
Open cut tunnel part includes that steel grating concrete protects arch and the big abutment wall on the outside of it, and steel grating concrete protects above arch, is big
C20 concrete is backfilled on the inside of abutment wall, backfill C20 concrete top is bottom-up successively have been performed waterproof layer, native rock layers and glued
Native water barrier；
The liner structure of open cut tunnel part and dark cavity portion is in overall construction, and steel grating concrete shield arch is covered in open cut tunnel part
Liner structure outside, arch wall bottom is connect with big abutment wall bottom on the outside of lining cutting.
Big abutment wall bottom inside is provided with pre-buried big abutment wall embedded bar, and arch wall bottom passes through pre-buried big on the outside of tunnel-liner
Abutment wall embedded bar and big abutment wall consolidate.
Big abutment wall wall top is provided with reserved drain hole from inside to outside, with waterproof layer with high.
The hillside face temporary lodging of steel grating concrete shield arch medial end is provided with lock foot support anchors.
The utility model has the advantage that
The utility model is structurally reasonable reliably, construction safety is orderly, efficiently solves a technology of Mountain Tunnels engineering
Problem integrally builds up guarantee project and plays a very important role, has good promotion and practical value.
Detailed description of the invention
Fig. 1 Mountain Tunnels half-open and half-hidden structure schematic diagram.
In figure, 1- spray anchor protection, 2- pipe canopy, the big abutment wall of 3-, the big abutment wall embedded bar of 4-, 5- steel grating concrete shield arch,
6- locks foot support anchors, and 7- backfills C20 concrete, 8- waterproof layer, 9- soil rock layers, 10- clay water barrier, 11- advanced tubule.
Specific embodiment
The utility model is described in detail With reference to embodiment.
The utility model relates to a kind of Mountain Tunnels half-open and half-hidden structures, suitable for being close to mountain shallow embedding, local hollow tunnel
Engineering, the structure type combined by light and shade and construction way, efficiently solve and tunnel are arranged under hazy orographic condition
Technical problem, structure is reasonable, relative ease of constructing, the safety after constructing tunnel and operation can be effectively ensured.
The structure includes open cut tunnel part and dark cavity portion, and dark cavity portion is performed in hillside natural slope hereinafter, open cut tunnel portion
Quartile hollow part more than the natural slope of hillside, on the outside of dark cavity portion.
Open cut tunnel part include steel grating concrete shield arch 5 and its on the outside of big abutment wall 3, steel grating concrete shield arch 5 top,
C20 concrete is backfilled on the inside of big abutment wall 3, backfill C20 concrete seven top is bottom-up successively to have performed waterproof layer 8, native rock layers
9 and clay water barrier 10.
The liner structure of open cut tunnel part and dark cavity portion is in overall construction, and steel grating concrete shield arch 5 is covered in open cut tunnel portion
Outside the liner structure divided, arch wall bottom is connect with big 3 bottom of abutment wall on the outside of lining cutting.3 bottom inside of big abutment wall of open cut tunnel part is set
It is equipped with pre-buried big abutment wall embedded bar 4, arch wall bottom passes through pre-buried big abutment wall embedded bar 4 and big abutment wall 3 on the outside of tunnel-liner
Consolidation.
Big 3 wall top of abutment wall is provided with reserved drain hole from inside to outside, with waterproof layer 8 with high.Steel grating concrete shield arch 5
The hillside face temporary lodging of medial end is provided with lock foot support anchors 6.
The construction method of above-mentioned Mountain Tunnels half-open and half-hidden structure, comprising the following steps:
Step 1: the hollow part-structure in tunnel is first applied；Natural hillside is arranged, is protected, open-cut tunnel structure of constructing；
Step 2: it after open-cut tunnel structure reaches intensity, applies by the dark cavity portion structure of versant, using shallow mining method；
Step 3: carrying out deformation monitoring to slope descent, cracking in real time, has data exception to stop construction and carries out at reinforcing
Reason.
In step 1, open cut tunnel part-structure apply comprising the following steps:
A, preparation of construction removes rubble and loose native stone on hillside, spray anchor protection 1 is performed to slope surface, to guarantee slope
Stablize in face；
B, 3 concrete of big abutment wall on the outside of open cut tunnel, and the pre-buried big abutment wall embedded bar 4 on the inside of wall are first performed, wall top is pre-
Stay drain hole；
C, steel grating concrete shield arch 5, the hillside face temporary lodging at 5 top of steel grating concrete shield arch are performed in open cut tunnel arch
Setting lock foot support anchors 6 are stablized with guaranteeing to protect arch；
D, after 5 intensity of steel grating concrete shield arch reach design requirement, backfill C20 concrete seven, height are performed above it
Sluice hole site at the top of to big abutment wall 3；
E, waterproof layer 8 is applied above backfill C20 concrete seven, rams rock layers 9 of banketing thereon, finally applies clay water barrier 10,
Surface is made into flowing water slope.
In step 2, dark cavity portion structure apply comprising the following steps:
A, dark cavity portion construction is carried out again after open-cut tunnel structure reaches design strength；
B, advance support is applied, advanced tubule 11 is arranged in arch a certain range and pre-pouring grout reinforces massif, applies range
It is adjusted according to actual landform, geological condition；
C, using the soil body on the right side of benching tunnelling method successively step excavation side slope, and steelframe and spray anchor are applied in time into initial stage branch
Shield；
D, it is laid with splash guard and pumping equipment, then performs the inverted arch, arch wall and ditch in tunnel, arch wall on the outside of tunnel-liner
It is attached with the big abutment wall embedded bar 4 of open cut tunnel.
In step 3, reinforce slope descent, the deformation monitorings such as cracking comprising the following steps:
A, settlement measurement measuring point is arranged in earth's surface in tunnel coverage, and appropriate time starts to measure before construction,
Ground settlement measuring point horizontal spacing is generally 2 ~ 5m.Measuring point should be encrypted suitably near tunnel middle line.
B, reinforce observing outside hole, including the sight to earth's surface overall condition, subsidence, slope surface cracking, earth's surface water penetration etc.
It examines.
C, measurement and observation data are analyzed in time, and discovery has abnormal phenomenon that should stop constructing immediately, analyzes reason, adopts
Take necessary security hardening measure.
D, measurement and observation daily should timing, determine number and uninterruptedly carry out, encounter the adverse weathers such as rainy day, to increase secondary
Number, it is ensured that data are timely and effective.
The content of the utility model is not limited to cited by embodiment, and those of ordinary skill in the art are practical new by reading this
Type specification and to any equivalent transformation that technical solutions of the utility model are taken, be the claim institute of the utility model
Cover.
Claims (4)
1. a kind of Mountain Tunnels half-open and half-hidden structure, it is characterised in that:
The structure includes open cut tunnel part and dark cavity portion, and dark cavity portion is performed in hillside natural slope hereinafter, open cut tunnel part position
The hollow part more than the natural slope of hillside, on the outside of dark cavity portion；
Open cut tunnel part includes steel grating concrete shield arch (5) and the big abutment wall (3) on the outside of it, and steel grating concrete shield is encircleed on (5)
C20 concrete is backfilled on the inside of side, big abutment wall (3), backfill C20 concrete (7) top is bottom-up successively to have performed waterproof layer
(8), native rock layers (9) and clay water barrier (10)；
The liner structure of open cut tunnel part and dark cavity portion is in overall construction, and steel grating concrete shield arch (5) is covered in open cut tunnel part
Liner structure outside, arch wall bottom is connect with big abutment wall (3) bottom on the outside of lining cutting.
2. a kind of Mountain Tunnels half-open and half-hidden structure according to claim 1, it is characterised in that:
Big abutment wall (3) bottom inside is provided with pre-buried big abutment wall embedded bar (4), and arch wall bottom passes through pre-buried on the outside of tunnel-liner
Big abutment wall embedded bar (4) and big abutment wall (3) consolidate.
3. a kind of Mountain Tunnels half-open and half-hidden structure according to claim 1, it is characterised in that:
Big abutment wall (3) wall top is provided with reserved drain hole from inside to outside, with waterproof layer (8) with high.
4. a kind of Mountain Tunnels half-open and half-hidden structure according to claim 1, it is characterised in that:
The hillside face temporary lodging of steel grating concrete shield arch (5) medial end is provided with lock foot support anchors (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820798156.2U CN208416561U (en) | 2018-05-28 | 2018-05-28 | A kind of Mountain Tunnels half-open and half-hidden structure |
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| CN201820798156.2U CN208416561U (en) | 2018-05-28 | 2018-05-28 | A kind of Mountain Tunnels half-open and half-hidden structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625879A (en) * | 2018-05-28 | 2018-10-09 | 中铁第勘察设计院集团有限公司 | Mountain Tunnels half-open and half-hidden structure and its construction method |
| CN110318770A (en) * | 2019-06-26 | 2019-10-11 | 中铁二十三局集团第三工程有限公司 | A kind of hazy start tunneling method of vcehicular tunnel |
| CN110747904A (en) * | 2019-11-26 | 2020-02-04 | 山西省交通规划勘察设计院有限公司 | Highway tunnel bias open cut tunnel structural form and construction method thereof |
-
2018
- 2018-05-28 CN CN201820798156.2U patent/CN208416561U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625879A (en) * | 2018-05-28 | 2018-10-09 | 中铁第勘察设计院集团有限公司 | Mountain Tunnels half-open and half-hidden structure and its construction method |
| CN110318770A (en) * | 2019-06-26 | 2019-10-11 | 中铁二十三局集团第三工程有限公司 | A kind of hazy start tunneling method of vcehicular tunnel |
| CN110747904A (en) * | 2019-11-26 | 2020-02-04 | 山西省交通规划勘察设计院有限公司 | Highway tunnel bias open cut tunnel structural form and construction method thereof |
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