CN110130922A - A kind of construction method of line tunnel portal - Google Patents
A kind of construction method of line tunnel portal Download PDFInfo
- Publication number
- CN110130922A CN110130922A CN201910546808.2A CN201910546808A CN110130922A CN 110130922 A CN110130922 A CN 110130922A CN 201910546808 A CN201910546808 A CN 201910546808A CN 110130922 A CN110130922 A CN 110130922A
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- 238000010276 construction Methods 0.000 title claims abstract description 50
- 239000004567 concrete Substances 0.000 claims abstract description 37
- 239000007921 spray Substances 0.000 claims abstract description 18
- 238000009412 basement excavation Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 230000005641 tunneling Effects 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 239000011241 protective layer Substances 0.000 abstract description 5
- 238000004162 soil erosion Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 7
- 238000009415 formwork Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- 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
-
- 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
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Geology (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of construction methods of line tunnel portal, comprising the following steps: carries out stage excavation to hole using excavator in the face-upward slope peripheral hardware intercepting ditch at construction hole and gutter；Open cut tunnel and portal section are from top to bottom carried out using hand fit's excavator；When excavating absolute altitude corresponding to dark hole advance support, advance support construction is carried out immediately；Before start tunneling, route two sides set reinforcing pile respectively at the upright excavation face of light and shade boundary；Portal construction is carried out after the completion of open cut tunnel or lining of tunnel portal section.In the construction method, first in construction hole face-upward slope peripheral hardware intercepting ditch, gutter, washing away to avoid side slope causes Falling Rocks, unstability to collapse.In the construction process, it carries out slope surface spray concrete protective layer to be connected with former slope surface, prevents slope surface weathering, cause soil erosion.
Description
Technical field
The present invention relates to Shield Construction Technique fields, more particularly, to a kind of construction method of line tunnel portal.
Background technique
Shield is a kind of advanced engineering machinery quickly built for tunnel, with the continuous increasing of domestic Metro Tunnel
Add, the operating condition of shield-tunneling construction becomes increasingly complex.
In geology construction, it can be related to constructing to the stratum of different geological conditions, shield-tunneling construction is usually according to ground
The hardness of layer divides, including ground consisting of hard rock boring mode and soft rock strata boring mode.
During constructing tunnel, entrance construction is particularly important, and rainwater washes away hole, is easy to cause Falling Rocks, loses
It is steady to collapse.With the weathering of hole slope surface, water and soil stream is easily caused.
The above-mentioned accident for how avoiding hole is those skilled in the art's technical problem urgently to be solved.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of construction methods of line tunnel portal.
The application provides a kind of construction method of line tunnel portal, comprising the following steps:
S1: face-upward slope peripheral hardware intercepting ditch and gutter at construction hole；
S2: stage excavation is carried out to hole using excavator；
S3: open cut tunnel and portal section are from top to bottom carried out using hand fit's excavator；
S4: when excavating absolute altitude corresponding to dark hole advance support, advance support construction is carried out immediately；
S5: before start tunneling, route two sides set reinforcing pile respectively at the upright excavation face of light and shade boundary；
S6: portal construction is carried out after the completion of open cut tunnel or lining of tunnel portal section.
Optionally, in step S4, in conjunction with side slope landform, slope surface anchor pole, steel mesh spray concrete as provisional protection；Bian Yang
Slope brush slope is layered progress from top to bottom, carries out anchoring stock net-spraying supporting.
Optionally, in step S5, hole earthwork evacuation, which reaches, forms step at tunnel mileage, performs dark hole set arch and peace
Leading truck is filled, lead pipe-shed support is performed on step, tunnel cutting is carried out after the completion of Shed-pipe Advanced Support performs.
Optionally, it in step S5, is excavated into hole section and keeps short drilling depth, weak blast, strong supporting, just sprayed concrete after excavation, use
Steel arch-shelf assembling machine erects steelframe, sprays concrete again after installation system anchor pole, linked network.
Optionally, in step S3, open cut tunnel carries out base treatment after the completion of excavating, and after base bearing capacity reaches predetermined value, applies
Make inverted arch, after inverted arch concrete final set, fills concrete.
Optionally, in step S6, portal headwall and aileron concrete placing use bracket and custom built forms, and pumping concrete enters mould；Hole
After the completion of door, hole waterproof and water drainage system is performed.
Technical solution of the present invention has the advantage that compared with prior art
In the construction method, first in construction hole face-upward slope peripheral hardware intercepting ditch, gutter, washing away to avoid side slope leads to side
Slope falling rocks, unstability are collapsed.In the construction process, it carries out slope surface spray concrete protective layer to be connected with former slope surface, prevents slope surface weathering, cause
Soil erosion.
Specific embodiment
It is described in detail below in conjunction with specific embodiment.It should be understood that specific embodiment party described herein
Formula is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In a kind of specific embodiment, the present invention provides a kind of construction method of line tunnel portal, including it is following
Step:
Step S1: face-upward slope peripheral hardware intercepting ditch and gutter at construction hole；
Step S2: stage excavation is carried out to hole using excavator；
Step S3: open cut tunnel and portal section are from top to bottom carried out using hand fit's excavator；
Step S4: when excavating absolute altitude corresponding to dark hole advance support, advance support construction is carried out immediately；
Step S5: before start tunneling, route two sides set reinforcing pile respectively at the upright excavation face of light and shade boundary；
Step S6: portal construction is carried out after the completion of open cut tunnel or lining of tunnel portal section.
In the construction method, first in construction hole face-upward slope peripheral hardware intercepting ditch, gutter, washes away and lead to avoid side slope
Falling Rocks, unstability are caused to collapse.In the construction process, it carries out slope surface spray concrete protective layer to be connected with former slope surface, prevents slope surface weathering,
Cause soil erosion.
In a kind of specific embodiment, in step S4, in conjunction with side slope landform, slope surface anchor pole, steel mesh, spray concrete as
Provisional protection；Face-upward slope brush slope is layered progress from top to bottom, carries out anchoring stock net-spraying supporting.
In conjunction with side slope landform degree of stability, slope surface anchor pole, steel mesh, spray concrete are as provisional protection, to ensure peace of constructing
Entirely.
Face-upward slope brush slope is layered progress from top to bottom, and every 2~3m of layer height carries out anchoring stock net-spraying supporting with excavating in time.
It carries out slope surface spray concrete protective layer to be connected with former slope surface, prevents slope surface weathering, cause soil erosion, side slope protection is caused to be damaged
It is bad.Cut-and-cover tunnel, portal excavate, and avoid carrying out in the rainy day.
In another specific embodiment, in step S5, hole earthwork evacuation, which reaches, forms step at tunnel mileage,
Dark hole set arch and installation leading truck are performed, lead pipe-shed support is performed on step, hole is carried out after the completion of Shed-pipe Advanced Support performs
Body excavates.
Further, it in step S5, is excavated into hole section and keeps short drilling depth, weak blast, strong supporting, just sprayed concrete after excavation, adopt
Steelframe is erected with steel arch-shelf assembling machine, sprays concrete again after installation system anchor pole, linked network.
It is excavated into hole section and keeps short drilling depth, weak blast, strong supporting, quick-fried using manually boring using operation platform, excavator is matched
It attaches together carrier aircraft and digs dress, spray concrete carries out in two times, that is, just spray after excavating erects steelframe, installation system anchor using steel arch-shelf assembling machine
It sprays after bar, linked network, closes in time again, guarantee supporting quality.
In above-mentioned each specific embodiment, in step S3, open cut tunnel carries out base treatment, base bearing capacity after the completion of excavating
After reaching predetermined value, inverted arch is applied, after inverted arch concrete final set, fills concrete.
Open cut tunnel lining cutting is after the completion of inverted arch is filled from light and shade hole intersection to the lining cutting of tunnel portal direction.Open cut tunnel arch wall lining cutting
It is all made of formwork jumbo and makees internal model, combined steel makees external mold, disposable form.Open cut tunnel lining cutting and tunnel portal construction terminate
The backfill construction of hole top is carried out afterwards.Open cut tunnel backfills placement in layers after the completion of waterproof layer applies, and left and right alternating is symmetrical to backfill.
Specifically, portal headwall and aileron concrete placing use bracket and custom built forms, and pumping concrete enters mould in step S6；Hole
After the completion of door, hole waterproof and water drainage system is performed.
Portal construction carries out after the completion of open cut tunnel or lining of tunnel portal section；Portal headwall and aileron concrete placing using bracket and are determined
Pallet, concrete are pumped into mould, poker vibrator vibrates, and presses using automatic gauge blending station production outside hole, the transport of concrete transport vehicle
It is required that carrying out the maintenance work of bricklaying.
A kind of specific embodiment is as follows:
Hole cubic metre of earth uses excavator stage excavation, and dump truck is transported to spoil disposal area；The cubic meter of stone controls weak blast using shallow bore hole, excavates
Machine or loading machine dress quarrel, dump truck are transported to spoil disposal area.
Cut-and-cover tunnel, portal excavate before, first construction hole face-upward slope outside cut, gutter, washed away to avoid side slope,
Falling Rocks, unstability are caused to collapse.Open cut tunnel and portal section are excavated from top to bottom to be carried out using hand fit's excavator.Meet individually compared with
Big boulder or a small amount of hard rock, air drill drilling, micro- dose disintegrate, and pneumatic pick repairs chisel profile or non-electric control photoface exploision, must not disturb
Dynamic side slope, influences stability of slope.Loading machine or excavator dress quarrel, dump truck transport directly to required location and unload quarrel.Side slope is opened
It digs the gradient and presses design drawing slope, when excavating absolute altitude corresponding to dark hole advance support, carry out advance support construction immediately.In conjunction with side
Hillside fields shape degree of stability, slope surface anchor pole, steel mesh, spray concrete are as provisional protection, to ensure construction safety.
Face-upward slope brush slope is layered progress from top to bottom, and every 2~3m of layer height carries out anchoring stock net-spraying supporting with excavating in time.
It carries out slope surface spray concrete protective layer to be connected with former slope surface, prevents slope surface weathering, cause soil erosion, side slope protection is caused to be damaged
It is bad.Cut-and-cover tunnel, portal excavate, and avoid carrying out in the rainy day.
Before start tunneling, stablize to ensure that slope is faced upward in outlet, route two sides set No. 1 respectively at the upright excavation face of light and shade boundary
With No. 2 pre-reinforcement stakes, No. 1 stake diameter 3.0m × 3.0m, No. 2 stake diameter 3.5m × 2.5m, long stake is 26m, has been performed to hole stake
Finish and hole excavation construction can be carried out after reaching design strength.
Hole earthwork evacuation, which reaches, forms step at tunnel mileage, dark hole set arch and installation leading truck are performed, in step
On perform lead pipe-shed support, tunnel cutting is carried out after the completion of Shed-pipe Advanced Support performs.
It is excavated into hole section and keeps short drilling depth, weak blast, strong supporting, quick-fried using manually boring using operation platform, excavator is matched
It attaches together carrier aircraft and digs dress, spray concrete carries out in two times, that is, just spray after excavating erects steelframe, installation system anchor using steel arch-shelf assembling machine
It sprays after bar, linked network, closes in time again, guarantee supporting quality.
Open cut tunnel carries out base treatment after the completion of excavating, base bearing capacity can apply inverted arch, filling concrete after reaching requirement, fill out
Concrete placings are filled to carry out after inverted arch concrete final set.
Open cut tunnel lining cutting is after the completion of inverted arch is filled from light and shade hole intersection to the lining cutting of tunnel portal direction.Open cut tunnel arch wall lining cutting
It is all made of formwork jumbo and makees internal model, combined steel makees external mold, disposable form.Open cut tunnel lining cutting and tunnel portal construction terminate
The backfill construction of hole top is carried out afterwards.Open cut tunnel backfills placement in layers after the completion of waterproof layer applies, and left and right alternating is symmetrical to backfill.
Portal construction carries out after the completion of open cut tunnel or lining of tunnel portal section；Portal headwall and aileron concrete placing using bracket and are determined
Pallet, concrete are pumped into mould, poker vibrator vibrates, and presses using automatic gauge blending station production outside hole, the transport of concrete transport vehicle
It is required that carrying out the maintenance work of bricklaying.After the completion of portal, hole waterproof and water drainage system is performed in time.
The construction method of line tunnel portal provided by the present invention is described in detail above.Tool used herein
Principle and implementation of the present invention are described for body example, the above embodiments are only used to help understand this hair
Bright method and its core concept.It should be pointed out that for those skilled in the art, not departing from the present invention
, can be with several improvements and modifications are made to the present invention under the premise of principle, these improvement and modification also fall into right of the present invention
It is required that protection scope in.
Claims (6)
1. a kind of construction method of line tunnel portal, which comprises the following steps:
S1: face-upward slope peripheral hardware intercepting ditch and gutter at construction hole；
S2: stage excavation is carried out to hole using excavator；
S3: open cut tunnel and portal section are from top to bottom carried out using hand fit's excavator；
S4: when excavating absolute altitude corresponding to dark hole advance support, advance support construction is carried out immediately；
S5: before start tunneling, route two sides set reinforcing pile respectively at the upright excavation face of light and shade boundary；
S6: portal construction is carried out after the completion of open cut tunnel or lining of tunnel portal section.
2. the construction method of line tunnel portal as described in claim 1, which is characterized in that in step S4, in conjunction with side slope landform,
Slope surface anchor pole, steel mesh spray concrete as provisional protection；Face-upward slope brush slope is layered progress from top to bottom, carries out anchoring stock net-spraying branch
Shield.
3. the construction method of line tunnel portal as claimed in claim 2, which is characterized in that in step S5, the hole cubic metre of earth and stone is opened
It digs to reach and forms step at tunnel mileage, perform dark hole set arch and installation leading truck, lead pipe-shed support is performed on step,
Shed-pipe Advanced Support carries out tunnel cutting after the completion of performing.
4. the construction method of the line tunnel portal as described in claim 3, which is characterized in that in step S5, excavated into hole section
It keeps short drilling depth, weak blast, strong supporting, concrete is just sprayed after excavation, steelframe is erected using steel arch-shelf assembling machine, installation system anchor pole,
Concrete is sprayed after linked network again.
5. such as the construction method of the described in any item line tunnel portals of Claims 1-4, which is characterized in that in step S3, open cut tunnel
Base treatment is carried out after the completion of excavating, after base bearing capacity reaches predetermined value, applies inverted arch, after inverted arch concrete final set, fills concrete.
6. the construction method of the line tunnel portal as described in claim 5, which is characterized in that in step S6, portal headwall and
Aileron concrete placing uses bracket and custom built forms, and pumping concrete enters mould；After the completion of portal, hole waterproof and water drainage system is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910546808.2A CN110130922A (en) | 2019-06-24 | 2019-06-24 | A kind of construction method of line tunnel portal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910546808.2A CN110130922A (en) | 2019-06-24 | 2019-06-24 | A kind of construction method of line tunnel portal |
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| Publication Number | Publication Date |
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| CN110130922A true CN110130922A (en) | 2019-08-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910546808.2A Pending CN110130922A (en) | 2019-06-24 | 2019-06-24 | A kind of construction method of line tunnel portal |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424460A (en) * | 2019-08-22 | 2019-11-08 | 中铁隧道集团三处有限公司 | A kind of tunnel open excavation construction technology |
| CN110645003A (en) * | 2019-10-17 | 2020-01-03 | 中铁二局集团有限公司 | Completely weathered granite bias steep slope tunnel entry construction method |
| CN110863838A (en) * | 2019-12-11 | 2020-03-06 | 湖北省路桥集团有限公司 | Complex weak surrounding rock tunnel entry structure and construction method |
| CN110939455A (en) * | 2019-12-18 | 2020-03-31 | 浙江大学城市学院 | Construction method of tunnel portal structure |
| CN111472811A (en) * | 2020-04-17 | 2020-07-31 | 中国人民解放军63921部队 | Assembled integral GFRP-framework concrete mouth lining structure for rapid repair of tunnel mouth and rapid repair method |
| CN111926856A (en) * | 2020-07-01 | 2020-11-13 | 中铁二院重庆勘察设计研究院有限责任公司 | Tunnel entering construction method based on longitudinal anti-skid open cut tunnel structure |
| CN112901204A (en) * | 2021-02-25 | 2021-06-04 | 中铁二十五局集团第五工程有限公司 | Safe construction method for cliff tunnel |
| CN114086969A (en) * | 2021-11-30 | 2022-02-25 | 广西路桥工程集团有限公司 | Tunnel entering construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104278993A (en) * | 2013-07-11 | 2015-01-14 | 福州市规划设计研究院 | Construction method of unsymmetrical loading tunnel heterotropic hole |
| CN105156121A (en) * | 2015-10-08 | 2015-12-16 | 中铁二十五局集团第五工程有限公司 | Construction method of large-cross section loess tunnel cave entering shallow buried section |
| CN207598248U (en) * | 2017-12-11 | 2018-07-10 | 中铁二院成都勘察设计研究院有限责任公司 | A kind of Mountainous high speed railway tunnel protects bridge open-cut tunnel structure |
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2019
- 2019-06-24 CN CN201910546808.2A patent/CN110130922A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278993A (en) * | 2013-07-11 | 2015-01-14 | 福州市规划设计研究院 | Construction method of unsymmetrical loading tunnel heterotropic hole |
| CN105156121A (en) * | 2015-10-08 | 2015-12-16 | 中铁二十五局集团第五工程有限公司 | Construction method of large-cross section loess tunnel cave entering shallow buried section |
| CN207598248U (en) * | 2017-12-11 | 2018-07-10 | 中铁二院成都勘察设计研究院有限责任公司 | A kind of Mountainous high speed railway tunnel protects bridge open-cut tunnel structure |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424460A (en) * | 2019-08-22 | 2019-11-08 | 中铁隧道集团三处有限公司 | A kind of tunnel open excavation construction technology |
| CN110645003A (en) * | 2019-10-17 | 2020-01-03 | 中铁二局集团有限公司 | Completely weathered granite bias steep slope tunnel entry construction method |
| CN110863838A (en) * | 2019-12-11 | 2020-03-06 | 湖北省路桥集团有限公司 | Complex weak surrounding rock tunnel entry structure and construction method |
| CN110863838B (en) * | 2019-12-11 | 2021-08-20 | 湖北省路桥集团有限公司 | Complex weak surrounding rock tunnel entry structure and construction method |
| CN110939455A (en) * | 2019-12-18 | 2020-03-31 | 浙江大学城市学院 | Construction method of tunnel portal structure |
| CN111472811A (en) * | 2020-04-17 | 2020-07-31 | 中国人民解放军63921部队 | Assembled integral GFRP-framework concrete mouth lining structure for rapid repair of tunnel mouth and rapid repair method |
| CN111472811B (en) * | 2020-04-17 | 2021-06-01 | 中国人民解放军63921部队 | Assembled integral GFRP-framework concrete mouth lining structure for rapid repair of tunnel mouth and rapid repair method |
| CN111926856A (en) * | 2020-07-01 | 2020-11-13 | 中铁二院重庆勘察设计研究院有限责任公司 | Tunnel entering construction method based on longitudinal anti-skid open cut tunnel structure |
| CN112901204A (en) * | 2021-02-25 | 2021-06-04 | 中铁二十五局集团第五工程有限公司 | Safe construction method for cliff tunnel |
| CN114086969A (en) * | 2021-11-30 | 2022-02-25 | 广西路桥工程集团有限公司 | Tunnel entering construction method |
| CN114086969B (en) * | 2021-11-30 | 2024-02-20 | 广西路桥工程集团有限公司 | Tunnel entering construction method |
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Application publication date: 20190816 |