CN110241825A - A kind of reservoir liner pipe rockfill grouting construction method and structure - Google Patents
A kind of reservoir liner pipe rockfill grouting construction method and structure Download PDFInfo
- Publication number
- CN110241825A CN110241825A CN201910603584.4A CN201910603584A CN110241825A CN 110241825 A CN110241825 A CN 110241825A CN 201910603584 A CN201910603584 A CN 201910603584A CN 110241825 A CN110241825 A CN 110241825A
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- pipe
- internal lining
- grouting
- lining pipe
- outlet
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 230000008676 import Effects 0.000 claims abstract description 22
- 239000011440 grout Substances 0.000 claims abstract description 20
- 230000035699 permeability Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000005476 soldering Methods 0.000 claims abstract description 5
- 210000004243 sweat Anatomy 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 241000256135 Chironomus thummi Species 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000011083 cement mortar Substances 0.000 claims description 3
- 238000010348 incorporation Methods 0.000 claims description 3
- 239000000411 inducer Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 230000010412 perfusion Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 2
- 238000010257 thawing Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 108091006146 Channels Proteins 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 201000010041 presbyopia Diseases 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Sewage (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of reservoir liner pipe rockfill grouting construction method and structure, comprising: one, internal lining pipe laying: original is contained into mixed and disorderly substances in pipe, mud silt etc. before internal lining pipe laying and is cleaned out, is drawn from downstream toward upstream end, side weld ddge is applied；Two, internal lining pipe welds: internal lining pipe total interface is using live sweat soldering；Three, packer permeability test: internal lining pipe carries out packer permeability test after installing, and packer permeability test pressure is not less than 0.6MPa, and the duration records pressure condition for 24 hours, every 3h, examines the leakproofness of liner pipe fitting；Four, rockfill grouting: after internal lining pipe traction in place, cavity setting import concrete plug and outlet concrete plug within the scope of internal lining pipe inlet and outlet 1m between former culvert pipe, exhaust pipe and grout pipe need to be reserved when closure, carry out rockfill grouting operation every 48h after the completion of closure.The present invention can make former culvert pipe combine closely with interior lined pipe, block closely knit, be effectively ensured the construction quality of internal lining pipe recovery technique, and it is safe and extend internal lining pipe service life to guarantee that internal lining pipe uses.
Description
Technical field
The present invention relates to a kind of reservoir liner pipe rockfill grouting construction method and structures, belong to rockfill grouting construction method
Field.
Background technique
Earth and rockfill dam dam body culvert pipe is the water release works that China's small reservoir generallys use, and dam body culvert pipe is generally embedded in dam
In body or on the dam foundation.Dam body culvert pipe can have different degrees of structural failure, pipe shaft leakage, tube bottom siltation, pipe through many years operation
The problems such as body faulting of slab ends not only influence reservoir profit point, but also seriously threaten dam safety.Contain for small reservoir dam body
Existing problems are managed, there is culvert pipe centainly more than needed for the cross-section of river, lined pipe can reinforce and change in former culvert pipe
It makes, closure reinforcing is carried out using backfilling material between internal lining pipe and former culvert pipe.
It blocks to reinforce at present and only entrance and outlet is blocked using concrete, the non-grout sealing in middle section, or block not
Closely knit, there are cavitys on top, are easy to produce leakage problems, threaten dam body safety.When entrance head is higher, there is pressure in internal lining pipe
Stream, if interlude grout sealing leakiness, can reduce internal lining pipe safety in utilization and service life.
Summary of the invention
To solve the above problems, the invention proposes a kind of reservoir liner pipe rockfill grouting construction method and structures.
The first object of the present invention is to provide a kind of reservoir liner pipe rockfill grouting construction method, comprising the following steps:
1. internal lining pipe is laid
The building facilities such as former import lying pipe, outlet abutment wall are removed before internal lining pipe laying, and original is contained into mixed and disorderly substances in pipe, mud silt
It etc. cleaning out, is drawn from downstream toward upstream end, side weld ddge is applied；
2. internal lining pipe welds
Internal lining pipe total interface is wanted to add with heating plate close contact using live sweat soldering, tubing butt welding connector
Heat removes heating plate and melting end is docking together rapidly, be cooled to environment temperature to after melting, it is ensured that joint strength is higher than pipe
Body intensity；
3. packer permeability test
Internal lining pipe carries out packer permeability test after installing, packer permeability test pressure is not less than 0.6MPa, the duration for 24 hours, every
3h records pressure condition, examines the leakproofness of liner pipe fitting；
4. rockfill grouting
After internal lining pipe traction in place, coagulation grave is carried out to the cavity within the scope of internal lining pipe inlet and outlet 1m between former culvert pipe
Stifled, respectively import concrete plug and outlet concrete plug, when closure, need to reserve exhaust pipe and grout pipe, after the completion of closure
Rockfill grouting operation is carried out every 48h；
Grouting uses orifice closing formula cycle grouting method, while cementing operations, internal lining pipe is kept to press water state, when grouting
It is carried out from culvert pipe Outlet Section, slurries are gradually upstream perfused from downstream.
Further, at the top of culvert pipe admission section before grouting, the row of Φ 30mm is first placed between former culvert pipe and internal lining pipe
Tracheae, exhaust pipe totally two, length 1.5m.
Further, at the top of culvert pipe Outlet Section before grouting, the plating of Φ 50mm is first placed between former culvert pipe and internal lining pipe
Zinc steel pipe is as grout pipe, and grout pipe totally two, length 10m.
Further, when cementing operations, the overflow situation of exhaust pipe is observed, after 5min is discharged from exhaust pipe in cement grout,
Block exhaust pipe；Every hole requires multiple filling three times, and each intermittent time is not less than 3d；For the first time, it is in the milk for the second time and for the third time
Pressure requirements are 0.1MPa, 0.15MPa, 0.20MPa, start slurry traversing valve after each grouting reaches design pressure, and keep it
Design pressure just stops hole grouting when midge amount per minute is further continued for perfusion 30min less than 1L/min formula.
Further, use cement mortar when being in the milk for the first time, fine silt incorporation is the 20% of siccative weight, second and
Neat slurry is used when third time is perfused.
The second object of the present invention is to provide a kind of reservoir liner pipe rockfill grouting constructing structure, which is characterized in that packet
Include former culvert pipe, internal lining pipe, tube wall rockfill grouting, import concrete plug, outlet concrete plug, exhaust pipe, grout pipe；It is described
Internal lining pipe is located inside former culvert pipe；Import concrete plug setting inducer 1m range between internal lining pipe and former culvert pipe
It is interior；The outlet concrete plug setting is between internal lining pipe and former culvert pipe within the scope of outlet section 1m；The tube wall rockfill grouting
It is set between internal lining pipe, former culvert pipe, import concrete plug and outlet concrete plug；The exhaust pipe setting is mixed in import
Solidifying soil the upper part of the plug；The grout pipe is arranged in outlet concrete the upper part of the plug.
The construction quality of internal lining pipe recovery technique can be effectively ensured in the present invention, complete reservoir dam body culvert pipe renovation technique.One
Kind reservoir liner pipe rockfill grouting construction method can make former culvert pipe combine closely with interior lined pipe, block closely knit, effective guarantor
The construction quality of internal lining pipe recovery technique is demonstrate,proved, it is safe and extend internal lining pipe service life to guarantee that internal lining pipe uses.
Detailed description of the invention
Fig. 1 is that reservoir dam dam body culvert pipe adds inner tube scheme arrangement figure.
Fig. 2 is internal lining pipe rockfill grouting layout drawing.
Fig. 3 is import grouting layout drawing.
Fig. 4 is outlet grouting layout drawing.
In figure: 1 is dam dam body, and 2 be import stilling pool slab, and 3 be export channel, and 4 be former culvert pipe, and 5 be internal lining pipe, and 6 are back
Grouting is filled out, 7 be import concrete plug, and 8 be outlet concrete plug, and 9 be exhaust pipe, and 10 be grout pipe.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
As shown in figures 1-4, a kind of reservoir liner pipe rockfill grouting constructing structure, which is characterized in that including former culvert pipe 4,
Internal lining pipe 5, tube wall rockfill grouting 6, import concrete plug 7, outlet concrete plug 8, exhaust pipe 9, grout pipe 10；In described
Bushing pipe 5 is located inside former culvert pipe 4；The setting of import concrete plug 7 inducer 1m model between internal lining pipe 5 and former culvert pipe 4
In enclosing；The setting of outlet concrete plug 8 is between internal lining pipe 5 and former culvert pipe 4 within the scope of outlet section 1m；The tube wall backfill
Grouting 6 is set between internal lining pipe 5, former culvert pipe 4, import concrete plug 7 and outlet concrete plug 8；The exhaust pipe 9 is set
It sets on 7 top of import concrete plug；The grout pipe 10 is arranged on 8 top of outlet concrete plug.
A kind of reservoir liner pipe rockfill grouting construction method, includes the following steps:
1. pipeline laying
The building facilities such as former import lying pipe, outlet abutment wall should be removed before pipeline laying, by sundries, mud mud in former culvert pipe 4
Sand etc. is cleaned out, and is drawn from downstream toward upstream end, and side weld ddge is applied.
2. pipeline welds
For 5 total interface of internal lining pipe using live sweat soldering, when welding, which should be noted that, prevents excessive temperature distortion.Pipe
Road sweat soldering uses specific purpose tool, and temperature control should be accurate, should put pipe on the same axis before welding.
Tubing butt welding connector is wanted can be with heating plate close contact, and after being heated to thawing, removing heating plate rapidly will fusing
End is docking together, and is cooled to environment temperature, it is ensured that joint strength is higher than pipe shaft intensity.
3. packer permeability test
Internal lining pipe 5 carries out packer permeability test after installing, packer permeability test pressure is not less than 0.6Mpa, the duration for 24 hours, every
3h records pressure condition, examines the leakproofness of 5 connector of internal lining pipe, prevents grouting slurries from entering internal lining pipe 5, causes internal lining pipe 5 stifled
Plug.
4. rockfill grouting
After the traction in place of internal lining pipe 5, concrete closure, respectively import are carried out to the cavity within the scope of pipeline inlet and outlet 1m
Concrete plug 7 and outlet concrete plug 8, when closure, need to reserve exhaust pipe 9 and grout pipe 10, after the completion of closure just every 48h
It can be carried out 6 operation of tube wall rockfill grouting.
At the top of culvert pipe admission section before grouting, the exhaust pipe 9 of Φ 30mm, row are first placed between former culvert pipe 4 and internal lining pipe 5
Tracheae 9 totally two, length 1.5m.At the top of culvert pipe Outlet Section before grouting, Φ first is placed between former culvert pipe 4 and internal lining pipe 5
The coating steel pipe of 50mm is as grout pipe 10, and coating steel pipe 10 totally two, length 10m, 10 outlet section 2m range edge of coating steel pipe
Presbyopia is arranged on periphery, is conducive to be in the milk.
Grouting uses orifice closing formula cycle grouting method.While cementing operations, keeps internal lining pipe 5 to press water state, prevent
Grouting pressure is excessive to cause internal lining pipe 5 to deform.It is carried out when grouting from culvert pipe Outlet Section, slurries are gradually upstream filled from downstream
Note.The overflow situation of exhaust pipe is observed, cement grout blocks exhaust pipe 9 after exhaust pipe discharge 5min.Every hole requires to fill 3 again
Secondary, each intermittent time is not less than 3d.For the first time, second and third time grouting pressure requirements be 0.1MPa, 0.15MPa,
0.20MPa starts slurry traversing valve after each grouting reaches design pressure, and keeps its design pressure, when midge amount per minute is small
Perfusion 30min, which is further continued for, in 1L/min formula just stops hole grouting.
Cement mortar is used when being perfused for the first time, fine silt incorporation is the 20% of siccative weight, and second and third time fill
Neat slurry is used when note.Grout coordinate ratio generally uses the level Four such as 3:1,2:1,1.5:1,1:1.Using denseer when being perfused for the first time
Slurries, second and third time then use diluter slurries.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (6)
1. a kind of reservoir liner pipe rockfill grouting construction method, which comprises the following steps:
1. internal lining pipe is laid
The building facilities such as former import lying pipe, outlet abutment wall are removed before internal lining pipe (5) laying, by the interior sundries of former culvert pipe (4), mud mud
Sand etc. is cleaned out, and is drawn from downstream toward upstream end, and side weld ddge is applied；
2. internal lining pipe welds
Internal lining pipe (5) total interface using live sweat soldering, want to heat with heating plate close contact by tubing butt welding connector
It to thawing, removes heating plate and melting end is docking together rapidly, be cooled to environment temperature, it is ensured that joint strength is higher than pipe shaft
Intensity；
3. packer permeability test
Internal lining pipe (5) carries out packer permeability test after installing, packer permeability test pressure is not less than 0.6MPa, the duration for 24 hours, every 3h
Pressure condition is recorded, the leakproofness of internal lining pipe (5) connector is examined；
4. rockfill grouting
After internal lining pipe (5) traction in place, the cavity within the scope of internal lining pipe (5) inlet and outlet 1m between former culvert pipe (4) is mixed
Solidifying grave is stifled, respectively import concrete plug (7) and outlet concrete plug (8), and when closure need to reserve exhaust pipe (9) and filling
Slurry pipe (10) carries out rockfill grouting (6) operation every 48h after the completion of closure；
Grouting uses orifice closing formula cycle grouting method, while cementing operations, internal lining pipe (5) is kept to press water state, when grouting
It is carried out from culvert pipe Outlet Section, slurries are gradually upstream perfused from downstream.
2. a kind of reservoir liner pipe rockfill grouting construction method according to claim 1, it is characterised in that: culvert pipe import
Before profile head grouting, the exhaust pipe (9) of Φ 30mm is first placed between former culvert pipe (4) and internal lining pipe (5), exhaust pipe (9) is altogether
Two, length 1.5m.
3. a kind of reservoir liner pipe rockfill grouting construction method according to claim 1, it is characterised in that: culvert pipe outlet
Before profile head grouting, the coating steel pipe of Φ 50mm is first placed between former culvert pipe (4) and internal lining pipe (5) as grout pipe
(10), grout pipe (10) totally two, length 10m.
4. a kind of reservoir liner pipe rockfill grouting construction method according to claim 1, it is characterised in that: cementing operations
When, the overflow situation of exhaust pipe (9) is observed, after 5min is discharged from exhaust pipe (9) in cement grout, is blocked exhaust pipe (9)；It wants in every hole
Ask multiple filling three times, each intermittent time is not less than 3d；For the first time, second and third time grouting pressure requirements be 0.1MPa,
0.15MPa, 0.20MPa start slurry traversing valve after each grouting reaches design pressure, and keep its design pressure, when per minute
Midge amount is further continued for perfusion 30min less than 1L/min formula and just stops hole grouting.
5. a kind of reservoir liner pipe rockfill grouting construction method according to claim 4, it is characterised in that: fill for the first time
Cement mortar is used when slurry, fine silt incorporation is the 20% of siccative weight, and second and third time use neat slurry when being perfused.
6. a kind of reservoir liner pipe rockfill grouting constructing structure characterized by comprising
Former culvert pipe (4),
It is internal to be located at former culvert pipe (4) for internal lining pipe (5)；
Import concrete plug (7), setting is between internal lining pipe (5) and former culvert pipe (4) within the scope of inducer 1m；
Outlet concrete plug (8), setting is between internal lining pipe (5) and former culvert pipe (4) within the scope of outlet section 1m；
It is stifled to be set to internal lining pipe (5), former culvert pipe (4), import concrete plug (7) and outlet concrete for tube wall rockfill grouting (6)
Between head (8)；
Exhaust pipe (9) is arranged on import concrete plug (7) top；
Grout pipe (10) is arranged on outlet concrete plug (8) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603584.4A CN110241825B (en) | 2019-07-05 | 2019-07-05 | Backfill grouting construction method and structure for reservoir lining pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910603584.4A CN110241825B (en) | 2019-07-05 | 2019-07-05 | Backfill grouting construction method and structure for reservoir lining pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110241825A true CN110241825A (en) | 2019-09-17 |
| CN110241825B CN110241825B (en) | 2024-04-12 |
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ID=67891001
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910603584.4A Active CN110241825B (en) | 2019-07-05 | 2019-07-05 | Backfill grouting construction method and structure for reservoir lining pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647435A (en) * | 2019-10-11 | 2021-04-13 | 上海友为工程设计有限公司 | Improved plugging method for through-dike culvert |
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|---|---|---|---|---|
| JPH1182865A (en) * | 1997-09-08 | 1999-03-26 | Sekisui Chem Co Ltd | Lining method for pipe culvert |
| JP2001159476A (en) * | 1999-09-22 | 2001-06-12 | Sekisui Chem Co Ltd | Lining construction method for existing pipe passage |
| US6719493B1 (en) * | 1999-07-13 | 2004-04-13 | Friedrich Meyer | Method and system for encasing an endless, laid pipeline conduit with backfill concrete |
| CN102486247A (en) * | 2010-12-02 | 2012-06-06 | 杨兵 | Water supply and drainage pipeline repair technique adopting size film lining method |
| WO2014012305A1 (en) * | 2012-07-17 | 2014-01-23 | 中国长江三峡集团公司 | Method for repairing large diameter concrete water-supply pipe |
| CN107165168A (en) * | 2017-07-13 | 2017-09-15 | 中国电建集团华东勘测设计研究院有限公司 | Full closure underground chamber backfill, consolidation grouting pipeline layout |
| CN206707725U (en) * | 2017-02-18 | 2017-12-05 | 中铁华铁工程设计集团有限公司 | A kind of Tunnel Second Lining vault backfills Grouting Pipe |
| CN208965598U (en) * | 2018-08-17 | 2019-06-11 | 中国电建集团华东勘测设计研究院有限公司 | The Anti-seeping technology structure of grout curtain and underground chamber intersection area |
| CN210658362U (en) * | 2019-07-05 | 2020-06-02 | 长江勘测规划设计研究有限责任公司 | Construction structure for backfill grouting of lining pipeline of reservoir |
-
2019
- 2019-07-05 CN CN201910603584.4A patent/CN110241825B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1182865A (en) * | 1997-09-08 | 1999-03-26 | Sekisui Chem Co Ltd | Lining method for pipe culvert |
| US6719493B1 (en) * | 1999-07-13 | 2004-04-13 | Friedrich Meyer | Method and system for encasing an endless, laid pipeline conduit with backfill concrete |
| JP2001159476A (en) * | 1999-09-22 | 2001-06-12 | Sekisui Chem Co Ltd | Lining construction method for existing pipe passage |
| CN102486247A (en) * | 2010-12-02 | 2012-06-06 | 杨兵 | Water supply and drainage pipeline repair technique adopting size film lining method |
| WO2014012305A1 (en) * | 2012-07-17 | 2014-01-23 | 中国长江三峡集团公司 | Method for repairing large diameter concrete water-supply pipe |
| CN206707725U (en) * | 2017-02-18 | 2017-12-05 | 中铁华铁工程设计集团有限公司 | A kind of Tunnel Second Lining vault backfills Grouting Pipe |
| CN107165168A (en) * | 2017-07-13 | 2017-09-15 | 中国电建集团华东勘测设计研究院有限公司 | Full closure underground chamber backfill, consolidation grouting pipeline layout |
| CN208965598U (en) * | 2018-08-17 | 2019-06-11 | 中国电建集团华东勘测设计研究院有限公司 | The Anti-seeping technology structure of grout curtain and underground chamber intersection area |
| CN210658362U (en) * | 2019-07-05 | 2020-06-02 | 长江勘测规划设计研究有限责任公司 | Construction structure for backfill grouting of lining pipeline of reservoir |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647435A (en) * | 2019-10-11 | 2021-04-13 | 上海友为工程设计有限公司 | Improved plugging method for through-dike culvert |
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| CN110241825B (en) | 2024-04-12 |
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