CN110043295A - It is a kind of first to encircle the Tunnel Landslide processing method filled out afterwards - Google Patents
It is a kind of first to encircle the Tunnel Landslide processing method filled out afterwards Download PDFInfo
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- CN110043295A CN110043295A CN201910334713.4A CN201910334713A CN110043295A CN 110043295 A CN110043295 A CN 110043295A CN 201910334713 A CN201910334713 A CN 201910334713A CN 110043295 A CN110043295 A CN 110043295A
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- landslide body
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- 238000003672 processing method Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 77
- 239000010959 steel Substances 0.000 claims abstract description 77
- 239000004567 concrete Substances 0.000 claims abstract description 25
- 238000007569 slipcasting Methods 0.000 claims abstract description 21
- 238000010276 construction Methods 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 239000004568 cement Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000011378 shotcrete Substances 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims 1
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910000712 Boron steel Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 235000019994 cava Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 210000005239 tubule Anatomy 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- 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
- 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to technical field of building construction, more particularly to a kind of first encircle the Tunnel Landslide processing method filled out afterwards, after interim I-shaped steel arch-shelf is set below the original just branch for closing on landslide body with just Zhi Jinhang reinforcing original to this, operation platform is backfilled at the face for closing on landslide body, and it is after forming slip casting steel tube shed at the top of the landslide body, landslide body is cleared up, the concrete of predetermined thickness is backfilled in the collapsing hole above landslide body later, to the security risk that can not only be effectively reduced in construction, and speed of application can be accelerated, shorten construction period, and then it is effectively saved construction time and economic cost.
Description
Technical field
A kind of encircleing the present invention relates to technical field of building construction more particularly to first the Tunnel Landslide processing method filled out afterwards.
Background technique
Landslide is most common during tunnel excavation, one of most harmful phenomenon, according to the case where Tunnel Landslide not
With must targetedly take corresponding treatment measures, at present both at home and abroad in constructing tunnel using the technique of conventional treatment landslide
Comparative maturity, but the method for conventional treatment landslide also has its limitation in many cases,.For example, being formd in landslide
When biggish landslide cavity, since landslide area is larger, the rock at the position that caves in is extremely unstable, has continue landslide possibility at any time,
Construction speed can not only be delayed, it is also possible to cause casualties, this is that those skilled in the art do not expect to see.
Summary of the invention
In view of the above problems, the invention discloses a kind of Tunnel Landslide processing methods first encircleed and filled out afterwards, wherein packet
Include following steps:
Interim I-shaped steel arch-shelf is arranged in step S1 below the original just branch for closing on landslide body, and in original just branch
Timber wedge is wedged in gap between the interim I-shaped steel arch-shelf to reinforce to original just Zhi Jinhang, and multiple described is faced
When I-steel arch linked together by reinforcing bar；
Step S2 backfills operation platform at the face for closing on the landslide body；
Step S3 forms slip casting steel tube shed at the top of the landslide body；
Step S4 clears up the landslide body；
Step S5, in it is described landslide body above collapsing hole in backfill predetermined thickness concrete.
Above-mentioned first encircles the Tunnel Landslide processing method filled out afterwards, wherein after to original just Zhi Jiagu, the step
Rapid S1 further include:
Per-fore pouring liquid with small pipe technique is carried out in original just branch to reinforce peripheral rock；
The arch springing of the interim I-shaped steel arch-shelf is reinforced.
Above-mentioned first encircles the Tunnel Landslide processing method filled out afterwards, wherein the step S2 backfill the operation platform it
Before further include the steps that it is described landslide body face carry out net spray Seal treatment.
Above-mentioned first encircles the Tunnel Landslide processing method filled out afterwards, wherein the step S3 is specifically included:
Steel tube shed, and the nozzle of the steel tube shed are squeezed at the top of landslide body described in direction under original end just propped up
It is provided with grouting stop-valve；
Grouting pump is used to carry out slip casting to the steel tube shed to form the slip casting steel tube shed.
Above-mentioned first encircles the Tunnel Landslide processing method filled out afterwards, wherein the final grouting pressure value of the grouting pump be 0.5~
1MPa。
Above-mentioned first encircles the Tunnel Landslide processing method filled out afterwards, wherein slip casting is carried out to the steel tube shed using cement slurry,
And accelerator is added in the cement slurry.
Above-mentioned first encircles the Tunnel Landslide processing method filled out afterwards, wherein in the step S4, to the landslide body into
While row cleaning, the landslide body is monitored, to obtain the Settlement Deformation Rules of the landslide body.
Above-mentioned first encircles the Tunnel Landslide processing method filled out afterwards, wherein in the step S5, is on the landslide body
In the collapsing hole of side before fill concrete, further include the steps that presetting several return pipes in collapsing hole, to be returned according to described
The thickness whether slurry pipe has slurries outflow to judge fill concrete.
Above-mentioned first encircles the Tunnel Landslide processing method filled out afterwards, wherein the step S5 further include:
Whether reach predetermined thickness using the thickness of bore detecting fill concrete, if reaching predetermined thickness, in landslide
Segment frame sets I-steel arch, and is after hanging steel mesh on the I-steel arch of the landslide section, to the work of the landslide section
Gunite concrete is on word steel arch-shelf to form shield arch.
Above-mentioned first encircles the Tunnel Landslide processing method filled out afterwards, wherein continues two lining concrete in the landslide section
Construction.
Foregoing invention is with the following advantages or beneficial effects:
The invention discloses a kind of Tunnel Landslide processing methods first encircleed and filled out afterwards, by the original just branch for closing on landslide body
After interim I-shaped steel arch-shelf is arranged to reinforce to original first Zhi Jinhang in lower section, backfills and apply at the face for closing on landslide body
Work platform, and be after forming slip casting steel tube shed at the top of the landslide body, landslide body is cleared up, later above landslide body
Collapsing hole in backfill the concrete of predetermined thickness, so that the security risk in construction can not only be effectively reduced, and can be with
Accelerate speed of application, shorten construction period, and then be effectively saved construction time and economic cost, there is very strong practicability.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, the present invention and its feature, outer
Shape and advantage will become more apparent.Identical label indicates identical part in all the attached drawings.Not can according to than
Example draws attached drawing, it is preferred that emphasis is shows the gist of the present invention.
Fig. 1 is the flow chart for first encircleing the Tunnel Landslide processing method filled out afterwards in the embodiment of the present invention；
Fig. 2 be closed in the embodiment of the present invention landslide body do not cave in Duan Chuzhi reinforce after schematic diagram.
Fig. 3 is the schematic diagram that the landslide section of steel tube shed is provided in the embodiment of the present invention；
Fig. 4 is the schematic diagram of the landslide section in the embodiment of the present invention after concrete backfill.
Specific embodiment
The structure in the present invention is further described with specific embodiment with reference to the accompanying drawing, but not as this
The restriction of invention.
As shown in figures 1-4, the invention discloses a kind of Tunnel Landslide processing method first encircleed and filled out afterwards, include the following steps:
Step S1 faces in original just branch (the first branch for closing on the section of not caving in of landslide body) the lower section setting for closing on landslide body
When I-steel arch, and in the gap between original just branch and interim I-shaped steel arch-shelf wedging timber wedge to original just Zhi Jinhang
It reinforces, and multiple interim I-shaped steel arch-shelfs are linked together by reinforcing bar；I.e. by reinforcing branch to Zhi Jinhang at the beginning of landslide body forward position
Shield, with the expansion for preventing vault face from caving in and the safety for ensuring construction personnel.
In a preferred embodiment of the invention, after to above-mentioned original just Zhi Jiagu, above-mentioned steps S1 is also wrapped
It includes:
Per-fore pouring liquid with small pipe technique is carried out in original just branch to reinforce peripheral rock；
The arch springing of the interim I-shaped steel arch-shelf is reinforced.
It is supported specifically, adding the interim I-steel 3 of I22 type below original just branch 1, between two interim I-shaped steel arch-shelfs 3
The gap 5cm is stayed, with spare 2 wedging of timber wedge, is set between interim I-shaped steel arch-shelf 3Connection reinforcing bar, circumferential spacing 200cm.
It is set in interim I-shaped steel arch-shelf 34 slip casting of advanced tubule of long 4m is to reinforce peripheral rock, advanced tubule 4
Exposed junction is welded in original just branch 1.The arch springing of I-steel arch 3 set depth when on inverted arch concrete at arch springing at that time
40cm eyelet two, lock foot anchoring stock is buried, and bound with iron wire and interim I-shaped steel arch-shelf 3；When the arch springing of I-steel arch 3 exists
When on rock mass, a depth 40cm is dug at arch springing, the hole of each 30cm of length and width is closed after arch springing is put into place, then with C30 concrete
It.
Step S2 backfills operation platform at the face for closing on landslide body, collapses when preventing subsequent daguanpeng construction
The landslide body come, which glides, influences construction safety, i.e., plays back-pressure to face, and be convenient for daguanpeng construction operation.
In a preferred embodiment of the invention, above-mentioned steps S2 further includes to landslide before backfilling operation platform
The face of body carries out the step of net spray Seal treatment.
Specifically, first carrying out 15cm net spray Seal treatment to the face of landslide body 7, and applied being backfilled at the face
Work platform, and the upper surface of operation platform backfilled and the distance between the lower surface of above-mentioned interim I-shaped steel arch-shelf 3 are no more than
3.0m, and the length of the operation platform and width are advisable with meeting 5 job requirements of steel tube shed.To both be convenient for subsequent steel tube shed 5
Operation, and back-pressure is played to landslide body, and then can prevent landslide body downslide when pipe roof construction from influencing construction safety.
Step S3 forms slip casting steel tube shed on landslide body, to reinforce hole top landslide body.
In a preferred embodiment of the invention, above-mentioned steps S3 is specifically included:
Step S31 squeezes into steel tube shed, and the nozzle of steel tube shed from direction landslide body top under above-mentioned original end just propped up
It is provided with grouting stop-valve.
Specifically, after the completion of above-mentioned operation platform fills, first from the end (i.e. original just branch 1 of above-mentioned original just branch 1
Close on landslide section one end) under direction landslide body 7 at the top of squeeze into 53 steel tube sheds 5, the length of every steel tube shed 5
Degree is 20m, wall thickness 6mm, and the spacing between adjacent steel tube shed 5 is 40cm.Then again in the same manner construct 3 sections of 20m,
20m, 23m steel tube shed 5.Specifically, before drilling machine starts drilling in place, by 5 position mark of steel tube shed in face, using precision
The bore angle in the good every hole of instrument controlling.Steel tube shed 5 is using with pipe operation.Pipe boron steel Guan Yuguan wedge is connected before drilling, is bored
Drill bit heads on pipe wedge and is all drilled into when hole, prevent loose slag collapse hole and can not pore-forming installing pipe boron steel pipe, drilling sequences are from top to bottom
Construction, tail end exposed 2m when the first ring is constructed, and install 3 Pin interim steel arch-shelf in the revealed section and pipe dingle end is supported,
And with 25 screw-thread steel of Ф by the two firm welding, temporary steel support need to be fallen on the basis of stabilization, when such as base foundation weakness, first
Pour the bar shaped reinforced concrete base of thick 1m wide 1m, the elongated laying 14mm thick steel plate in top surface, using the powerful support as steel arch-shelf.Pipe
Canopy connector uses screwed connection, and a length of 15cm of screw thread is usedThe long 30cm of mantle fiber steel pipe, to guarantee that stress is equal
Even property, coupling should longitudinally be staggered, the first segment steel pipe 3m long of odd number, the first segment steel pipe 6m long of even number, and each section is equal later
It is managed with 6m.When tubulature, the screw thread between Guan Yuguan will be gone up completely, then use drilling machine jacking, section by section spreading, successively jacking, until arriving
Until position, finally nozzle is welded with steel plate and is blocked, reserves switch and gas vent in order to slip casting, and set in the nozzle of steel tube shed
It is equipped with grouting stop-valve.
Step S32 uses grouting pump to carry out slip casting to the steel tube shed to form above-mentioned slip casting steel tube shed.
Specifically, in above-mentioned steps S31 after the installation is completed to steel tube shed 5, carrying out slip casting immediately.Slip casting uses high-pressure slip-casting
Pump.Pressure injection 1:1 cement grout, has to control grouting pressure, it is preferred that the high-pressure injection pump grouting pressure final pressure value is
0.5~1.0MPa (such as 0.5MPa, 0.6MPa, 7.5MPa or 1.0MPa etc.) continues whole hole after five minutes.Steel tube shed 5 is from arch
Foot should not be too large by root up slip casting, grouting pressure, to prevent face by reaction force, crack be caused to make cement flow
It loses.Since landslide body volume is larger, to prevent cement grout to be lost, reduce dilation angle, certain ratio is added in cement injection
The accelerator of example makes cement grout realize initial set in a relatively short period of time when entering landslide body, to achieve the purpose that save the cost.
Step S4 clears up landslide body.
Specifically, setting side wall drift advance on the right side of tunnel after the completion of above-mentioned 5 slip casting of steel tube shed and gradually excavating landslide body
7, quartering hammer is carried to the body 7 that caves in barrel into broken using digging machine when excavation, landslide body 7 is filled by side-dumping loader, from
Automobile fortune landslide body 7 to Dumping Sites are unloaded to stack.Measurement is monitored to landslide body 7 during excavation, it is 1-2 times daily,
The Settlement Deformation Rules of landslide body 7 are understood in time.Carry out safe emergency.
Step S5, in landslide body above collapsing hole 6 in backfill predetermined thickness concrete.
Specifically, above-mentioned will reserve overfall hole before concrete eight backfill, if concrete eight backfill thickness reaches predetermined thickness
When spending, return pipe just has slurry stream and goes out, and the thickness of so above concrete eight backfill of construction personnel's energy accurate judgement vault is
It is no to reach predetermined thickness.For example, the thickness design that concrete eight backfills in collapsing hole 6 is 100cm, overfall hole is usedSteel pipe production, steel pipe one end is laid in the above 100cm height of 6 vault of collapsing hole, the exposed closure mouth of the other end
Outside, length of steel pipe can need to select according to scene, and steel pipe has to fixation, preferably be completed supporting section arch carry out
Multi-point welding, in addition the laying quantity in overfall hole be 2 or more because the chip off-falling in collapsing hole 6 may cause return pipe damage or
Return pipe, which is squeezed, in concreting process may cause return pipe movement, deformation.After the completion of caving in section excavation, supporting,
Thickness is backfilled by bore detecting concrete eight, the thickness at each position is all larger than 100cm, and landslide segment frame sets I25b i arch
Frame is hung double-deck on I-steelSteel mesh, injection 30cmC25 concrete formed shield arch, after the completion of supporting construction, and
Shi Jinhang bis- serves as a contrast concrete construction.
It should be appreciated by those skilled in the art that those skilled in the art are combining the prior art and above-described embodiment can be with
Realize change case, this will not be repeated here.Such change case does not affect the essence of the present invention, and it will not be described here.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, devices and structures not described in detail herein should be understood as gives reality with the common mode in this field
It applies；Anyone skilled in the art, without departing from the scope of the technical proposal of the invention, all using the disclosure above
Methods and technical content many possible changes and modifications are made to technical solution of the present invention, or be revised as equivalent variations etc.
Embodiment is imitated, this is not affected the essence of the present invention.Therefore, anything that does not depart from the technical scheme of the invention, foundation
Technical spirit of the invention any simple modifications, equivalents, and modifications made to the above embodiment, still fall within the present invention
In the range of technical solution protection.
Claims (10)
1. a kind of first encircle the Tunnel Landslide processing method filled out afterwards, which comprises the steps of:
Interim I-shaped steel arch-shelf is arranged in step S1 below the original just branch for closing on landslide body, and in original just branch and the institute
It states and wedges timber wedge in the gap between interim I-shaped steel arch-shelf to reinforce to original just Zhi Jinhang, and multiple casual labour
Word steel arch-shelf is linked together by reinforcing bar；
Step S2 backfills operation platform at the face for closing on the landslide body；
Step S3 forms slip casting steel tube shed at the top of the landslide body；
Step S4 clears up the landslide body；
Step S5, in it is described landslide body above collapsing hole in backfill predetermined thickness concrete.
2. first encircleing the Tunnel Landslide processing method filled out afterwards as described in claim 1, which is characterized in that original just branch
After reinforcing, the step S1 further include:
Per-fore pouring liquid with small pipe technique is carried out in original just branch to reinforce peripheral rock；
The arch springing of the interim I-shaped steel arch-shelf is reinforced.
3. first encircleing the Tunnel Landslide processing method filled out afterwards as described in claim 1, which is characterized in that the step S2 is being backfilled
Further include the steps that the face to the landslide body carries out net spray Seal treatment before the operation platform.
4. first encircleing the Tunnel Landslide processing method filled out afterwards as described in claim 1, which is characterized in that the step S3 is specifically wrapped
It includes:
Steel tube shed, and the nozzle setting of the steel tube shed are squeezed at the top of landslide body described in direction under original end just propped up
There is grouting stop-valve；
Grouting pump is used to carry out slip casting to the steel tube shed to form the slip casting steel tube shed.
5. first encircleing the Tunnel Landslide processing method filled out afterwards as claimed in claim 4, which is characterized in that the slip casting of the grouting pump
Final pressure value is 0.5~1MPa.
6. first encircleing the Tunnel Landslide processing method filled out afterwards as claimed in claim 4, which is characterized in that using cement slurry to described
Steel tube shed carries out slip casting, and accelerator is added in the cement slurry.
7. first encircleing the Tunnel Landslide processing method filled out afterwards as described in claim 1, which is characterized in that in the step S4,
While clearing up the landslide body, the landslide body is monitored, to obtain the sedimentation and deformation of the landslide body
Rule.
8. first encircleing the Tunnel Landslide processing method filled out afterwards as described in claim 1, which is characterized in that in the step S5,
It is in the collapsing hole above the landslide body before fill concrete, further includes the step for presetting several return pipes in collapsing hole
Suddenly, the thickness whether to there is slurries outflow to judge fill concrete according to the return pipe.
9. first encircleing the Tunnel Landslide processing method filled out afterwards as claimed in claim 8, which is characterized in that the step S5 is also wrapped
It includes:
Whether reach predetermined thickness using the thickness of bore detecting fill concrete, if reaching predetermined thickness, in landslide segment frame
If I-steel arch, and be after hanging steel mesh on the I-steel arch of the landslide section, to the I-steel of the landslide section
Gunite concrete is on arch to form shield arch.
10. first encircleing the Tunnel Landslide processing method filled out afterwards as claimed in claim 9, which is characterized in that in the landslide Duan Ji
The continuous construction for carrying out two lining concrete.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910334713.4A CN110043295A (en) | 2019-04-24 | 2019-04-24 | It is a kind of first to encircle the Tunnel Landslide processing method filled out afterwards |
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| CN201910334713.4A CN110043295A (en) | 2019-04-24 | 2019-04-24 | It is a kind of first to encircle the Tunnel Landslide processing method filled out afterwards |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500120A (en) * | 2019-09-12 | 2019-11-26 | 贵阳建筑勘察设计有限公司 | A kind of tunnel large size landslide emergency immediate processing method |
| CN110748350A (en) * | 2019-10-28 | 2020-02-04 | 中国石油大学(华东) | Method for quickly treating collapse of urban subway tunnel passing through water-rich sand layer section |
| CN110924958A (en) * | 2019-10-25 | 2020-03-27 | 中交第二公路勘察设计研究院有限公司 | Method for treating main tunnel door closing collapse by using service tunnel |
| CN111878121A (en) * | 2020-08-03 | 2020-11-03 | 天津爱纷销科技有限公司 | Tunnel repairing method |
| CN112901207A (en) * | 2021-04-23 | 2021-06-04 | 中交路桥南方工程有限公司 | Treatment method for collapse in tunnel during arch change of secondary lining in sulfate corrosion section of operation tunnel |
| CN113187498A (en) * | 2021-05-13 | 2021-07-30 | 中铁十六局集团第二工程有限公司 | TBM tunnel collapsed cavity backfilling and advanced pipe shed construction method |
| CN113482657A (en) * | 2021-06-21 | 2021-10-08 | 中铁十六局集团第三工程有限公司 | Tunnel fault closed-door collapse processing and reinforcing method |
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Application publication date: 20190723 |