CN109555141A - Strong drainage system for ultra-large deep foundation pit and construction method - Google Patents

Strong drainage system for ultra-large deep foundation pit and construction method Download PDF

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Publication number
CN109555141A
CN109555141A CN201811579650.0A CN201811579650A CN109555141A CN 109555141 A CN109555141 A CN 109555141A CN 201811579650 A CN201811579650 A CN 201811579650A CN 109555141 A CN109555141 A CN 109555141A
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slope
foundation pit
gutter
forced
super
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Inventor
吴樟强
卫军明
郭延义
黄时锋
祁真
胡董超
黄飞祥
赵欣
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Shanghai Construction No 2 Group Co Ltd
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Shanghai Construction No 2 Group Co Ltd
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Priority to CN201811579650.0A priority Critical patent/CN109555141A/en
Publication of CN109555141A publication Critical patent/CN109555141A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/06Restraining of underground water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/06Restraining of underground water
    • E02D19/08Restraining of underground water by employing open ditches arranged below the level of the water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/06Restraining of underground water
    • E02D19/10Restraining of underground water by lowering level of ground water
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F3/00Sewer pipe-line systems
    • E03F3/04Pipes or fittings specially adapted to sewers
    • E03F3/046Open sewage channels

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Paleontology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

The invention discloses a strong drainage system for an oversized deep foundation pit and a construction method, relates to the technical field of foundation pit drainage, and is used for solving the problem that surface water such as foundation pit underground water, rainwater and the like causes foundation pit engineering construction in large-area deep foundation pit earthwork excavation. This strong drainage system adopts light-duty well point precipitation to combine the form of the three-layer bright row that catchments, promptly slope top escape canal, slope bottom escape canal and foundation ditch internal drainage canal to correspond respectively and set up the sump pit, transport water toward the upper story layer by layer through setting up strong drainage pump and pipeline, discharge municipal sewage pipe network or river course after the sedimentation tank is handled at last. Through setting up the bright escape canal of multilayer, carry out the forced drainage step by step, the job site has been optimized to reasonable drainage form, and the drainage system is more reasonable.

Description

A kind of forced-ventilated water system and construction method for super-sized foundation pit
Technical field
The present invention relates to drainage of foundation pit technical field, in particular to a kind of forced-ventilated water system for super-sized foundation pit and apply Work method.
Background technique
Foundation pit forced-ventilated water construction technology is mainly used in the deep-foundation pit engineering underground construction full stage.Base pit engineering is by underground Water, earth excavation depth, heavy rain weather etc. influence, and landslide easily occur, generate show slurry, and foundation bearing capacity and soil property are not Meet design requirement, very big security risk is generated to engineering construction.Usually guarantee foundation pit normal construction, pipe well is taken to drop The measure of water, the bright row that catchments excludes underground water, the ponding in soil mass of foundation pit.
Therefore, how one kind is provided and is applied to the strong drainage and construction method of super large ultra-deep type foundation pit, in large area, deep foundation pit soil In square excavation construction, it can effectively solve the problem that the problem of surface water such as foundation pit underground water and rainwater cause Foundation Pit Construction, be The technical issues of those skilled in the art's urgent need to resolve.
Summary of the invention
It is an object of that present invention to provide one kind to be applied to the strong drainage and construction method of super large ultra-deep type foundation pit, in large area, depth In pit earthwork excavation construction, it can effectively solve the problem that the surface water such as foundation pit underground water and rainwater are asked caused by Foundation Pit Construction Topic, while guaranteeing earth excavation and main structure construction progress.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of forced-ventilated water system for super-sized foundation pit, the foundation pit by top of the slope road second level slope to foundation pit platform, To bottom of foundation ditch, the forced-ventilated water system includes: subsequent earth excavation
Top of the slope gutter, the top of the slope gutter are arranged along the foundation pit top of the slope water-stop curtain, the top of the slope gutter It is connected to place river or municipal sewage pipe network;
A top of the slope sump is arranged in the top of the slope gutter in top of the slope sump at spacing intervals;
Light well point, the light well point is between the top of the slope water-stop curtain and the top of the slope gutter;
Bottom of slope gutter, the bottom of slope gutter are set at foundation pit platform;
A bottom of slope sump, the bottom of slope collection is arranged in the bottom of slope gutter in bottom of slope sump at spacing intervals Forced-ventilated water pump is set at well and water is evacuated in the top of the slope gutter by pipeline;
Foundation pit internal drainage ditch, the foundation pit internal drainage ditch are set to the outside of gravity dam, set at the foundation pit internal drainage ditch Forced-ventilated water pump and pipeline is set to send water into the bottom of slope gutter.
Compared with prior art, the present invention is beneficial has the technical effect that
One, the forced-ventilated water system for super-sized foundation pit of the invention, including top of the slope gutter and it is correspondingly arranged top of the slope collection Well, bottom of slope gutter are simultaneously correspondingly arranged bottom of slope sump, further include light well point and foundation pit internal drainage ditch, and pass through forced-ventilated water Pump and pipeline send the water in foundation pit internal drainage ditch into bottom of slope gutter, and the water at bottom of slope sump is evacuated to top of the slope gutter In, to form the bright drainage system of multilayer.By the way that the bright gutter of multilayer is arranged, forced-ventilated water, reasonable drainage pattern are carried out step by step Construction site is optimized, drainage system is more reasonable.The forced-ventilated water system has good be applicable in for complicated base pit engineering Property, it can be ensured that foundation pit is not by the ponding unfavorable factors such as influenced to cause slope failure, ground impaired.When construction site is by sudden and violent After the influence of the unfavourable weathers such as rain, typhoon, multilayer forced-ventilated aqueous systems can effective operation, and in Yu Yi restoring scene construct into Degree, is significantly reduced ponding harm caused by construction site.
Two, the construction method of the forced-ventilated water system for super-sized foundation pit of the invention, it is by foundation pit top of the slope road second level Slope combines three layers using Application of light well point precipitation and catchments bright row's to foundation pit platform then by earth excavation to bottom of foundation ditch Form, i.e. top of the slope gutter, bottom of slope gutter and foundation pit internal drainage ditch, and setting sump is respectively corresponded, by the way that forced-ventilated is arranged Water pump and pipeline finally enter municipal sewage pipe network or river by sedimentation basin processing heel row successively by water up one layer of transport.It should Construction method is easy to operate, reduces the operation difficulty of construction site, at low cost, constructs in large area, deep foundation pit earthwork digging In, it can effectively solve the problem that the problem of surface water such as foundation pit underground water and rainwater cause Foundation Pit Construction, while guaranteeing the earthwork It excavates and main structure construction progress.
Further, top of the slope gutter ring group cheats elongated setting, and solid block is built, cement plaster, and 2% gradient is general Water.To effectively by the water in top of the slope gutter by precipitating heel row into place river or municipal wastewater pipe.
Further, the side slope angle of slope is i=1:1.5, to facilitate gradient flashing.
Further, the side slope is the C20 pea gravel concreten slope protection surface layer with a thickness of 100mm.By the way that slope protection face is arranged Layer, can prevent soil mass of foundation pit from collapsing, guarantee the construction safety of foundation pit.
Further, in order to effectively be drained, the foundation pit internal drainage ditch ring group cheats elongated setting.Bottom four in foundation pit The setting of Zhou Caiyong concrete gutter, that is, form the foundation pit internal drainage ditch of concrete structure, ditch depth 200mm, wide 500mm, toed-out shape Shape, side slope are made of 100mm thickness C20 prefabricated board, and bear down on one 100mmC20 concrete, and bottom of trench uses C20 concreting, thickness 100mm.Further, the top of the slope gutter is closed equipped with concrete cover, and reserved opening.Foundation pit top of the slope is along construction road The gutter 800mm × 800mm, that is, top of the slope gutter is set, is handled using concrete cover closure, and reserved opening can be such that ponding is discharged into In ditch, is handled after through sedimentation basin and be discharged into place river or municipal sewage pipe network.
Further, it is contemplated that the infiltration of base mine water during foundation pit construction is accelerated to improve drainage efficiency The drainage efficiency in top of the slope gutter and bottom of slope gutter a, so that sump is arranged in aforementioned gutter at spacing intervals.When So, in conjunction with construction cost and drainage efficiency, which is 40m~60m.
Further, in order to keep gravity dam more stable, skirt ruggedized construction, the base are additionally provided on the outside of the gravity dam Hole internal drainage ditch side is connect with the gravity dam, and the other side is connect with the skirt ruggedized construction.The gravity dam of foundation pit be for Prevent the soil body from sliding into foundation pit.
The present invention also provides a kind of construction method of forced-ventilated water system for super-sized foundation pit, the construction method packets It includes:
Top of the slope gutter is excavated along construction road in foundation pit top of the slope, and is closed by precast concrete cover, and box out Mouth is connected to the top of the slope gutter with place river or municipal wastewater pipe;
Light well point is set between foundation pit top of the slope water-stop curtain and top of the slope gutter;
Bottom of slope gutter is excavated along foundation pit bottom of slope, and more obvious and bottom of slope collection is arranged in foundation pit corner in ponding in advance Well;
Foundation pit internal drainage ditch and corresponding sump are completed in earth excavation and structure construction procedure;
Forced-ventilated water pump is set at the foundation pit internal drainage ditch and pipeline send water into the bottom of slope gutter, bottom of slope is catchmented Water is evacuated in the top of the slope gutter by Jing Chu setting forced-ventilated water pump and pipeline, to complete the structure of multilayer gutter drainage system It builds.
Detailed description of the invention
Fig. 1 is schematic diagram of the one embodiment of the invention for the forced-ventilated water system of super-sized foundation pit.
In figure:
10- top of the slope gutter, 11- top of the slope water-stop curtain;20- bottom of slope gutter, 21- bottom of slope sump;The light-duty well of 30- Point;40- foundation pit internal drainage ditch;50- gravity dam;60- slope protection surface layer;The skirt 70- ruggedized construction.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to a kind of forced-ventilated water system for super-sized foundation pit proposed by the present invention And construction method is described in further detail.According to following explanation, advantages and features of the invention will be become apparent from.It below will be by Cited embodiment combination attached drawing, the technology contents and feature that the present invention will be described in detail.Need in addition it illustrate, attached drawing is adopted With very simplified form and using non-accurate ratio, only to facilitate, lucidly aid in illustrating the embodiment of the present invention Purpose.For sake of convenience, "upper" described below, "lower" are consistent with the upper and lower direction of attached drawing, but this can't be this hair The limitation of bright technical solution.
Embodiment one
It is illustrated with reference to Fig. 1 the structure composition of the forced-ventilated water system for super-sized foundation pit of the invention.
Referring to FIG. 1, a kind of forced-ventilated water system for super-sized foundation pit, the foundation pit by top of the slope road second level slope extremely Foundation pit platform, subsequent earth excavation to bottom of foundation ditch, the forced-ventilated water system include that Deep Pumped Wells combine the three layers of bright row that catchments Measure specifically includes: top of the slope gutter 10, top of the slope sump, light well point 30, bottom of slope gutter 20, bottom of slope sump 21, base Cheat internal drainage ditch 40, top of the slope gutter 10 is arranged along foundation pit top of the slope water-stop curtain 11, top of the slope gutter 10 and place river or The connection of person's municipal sewage pipe network;One top of the slope sump is set at spacing intervals in top of the slope gutter 10;Light well point 30 Between top of the slope water-stop curtain 11 and top of the slope gutter 10;Bottom of slope gutter 20 is set at foundation pit platform;Bottom of slope gutter 20 In a bottom of slope sump 21 is set at spacing intervals, forced-ventilated water pump and pipeline are set at bottom of slope sump 21 by water and are evacuated to slope In top row ditch 10;Foundation pit internal drainage ditch 40 is set to the outside of gravity dam 50, and forced-ventilated water pump is arranged at foundation pit internal drainage ditch 40 Water is sent into bottom of slope gutter 20 with pipeline.
Specifically, the forced-ventilated water system for super-sized foundation pit of the present embodiment, including top of the slope gutter 10 and correspondence Top of the slope sump is set, and bottom of slope gutter 20 is simultaneously correspondingly arranged bottom of slope sump 21, further includes row in light well point 30 and foundation pit Ditch 40, and given the water in foundation pit internal drainage ditch 40 into bottom of slope gutter 20 by forced-ventilated water pump and pipeline, by bottom of slope collection Water at well 21 is evacuated in top of the slope gutter 10, to form the bright drainage system of multilayer.By the way that the bright gutter of multilayer is arranged, by Grade carries out forced-ventilated water, and reasonable drainage pattern optimizes construction site, and drainage system is more reasonable.The forced-ventilated water system is for multiple Miscellaneous base pit engineering has good applicability, it can be ensured that foundation pit is not influenced to cause slope failure, ground impaired etc. by ponding Unfavorable factor.After construction site is influenced by unfavourable weathers such as heavy rain, typhoons, multilayer forced-ventilated aqueous systems can effective operation, And restoring scene construction speed in Yu Yi, it is significantly reduced ponding harm caused by construction site.
In the present embodiment, it is highly preferred that 10 ring group of top of the slope gutter cheats elongated setting, solid block is built, and cement is smeared Face, 2% gradient flashing.To effectively that the water in top of the slope gutter 10 is dirty by precipitating heel row to place river or municipal administration In water pipe.
In the present embodiment, it is highly preferred that the side slope angle of slope is i=1:1.5, to facilitate gradient flashing.
In the present embodiment, it is highly preferred that side slope is the C20 pea gravel concreten slope protection surface layer 60 with a thickness of 100mm.Pass through Slope protection surface layer 60 is set, can prevent soil mass of foundation pit from collapsing, guarantee the construction safety of foundation pit.
In the present embodiment, it is highly preferred that in order to effectively be drained, 40 ring group of foundation pit internal drainage ditch cheats elongated setting. Bottom surrounding is arranged using concrete gutter in foundation pit, that is, forms the foundation pit internal drainage ditch 40 of concrete structure, ditch depth 200mm, wide 500mm, toed-out shape, side slope are made of 100mm thickness C20 prefabricated board, and bear down on one 100mmC20 concrete, and bottom of trench uses C20 Concreting, thickness 100mm.
In the present embodiment, it is highly preferred that top of the slope gutter 10 is closed equipped with concrete cover, and reserved opening.Foundation pit The gutter 800mm × 800mm, that is, top of the slope gutter is arranged along construction road in top of the slope, is handled using concrete cover closure, and hole to be provided Mouth can be such that ponding is discharged into ditch, handle after through sedimentation basin and be discharged into place river or municipal sewage pipe network.
In the present embodiment, more preferably, it is contemplated that the infiltration of base mine water during foundation pit construction, in order to improve Drainage efficiency accelerates the drainage efficiency in top of the slope gutter 10 and bottom of slope gutter 20, so that aforementioned gutter is at spacing intervals One sump is set.Certainly, in conjunction with construction cost and drainage efficiency, which is 40m~60m.
In the present embodiment, it is highly preferred that in order to keep gravity dam 50 more stable, the outside of gravity dam 50 is additionally provided with skirt and adds Fixing structure 70,40 side of foundation pit internal drainage ditch are connect with gravity dam 50, and the other side is connect with skirt ruggedized construction 70.Skirt reinforces Structure 70 is that hall setting is expired at the three axes agitating pile hole bottom of 5m thickness.The gravity dam 50 of foundation pit is that the soil body is sliding into foundation pit in order to prevent It moves.
With continued reference to FIG. 1, the present embodiment additionally provides a kind of construction party of forced-ventilated water system for super-sized foundation pit Method, the construction method include:
Top of the slope gutter 10 is excavated along construction road in foundation pit top of the slope, and is closed by precast concrete cover, and stay Hole is connected to top of the slope gutter 10 with place river or municipal wastewater pipe;
Light well point 30 is set between foundation pit top of the slope water-stop curtain 11 and top of the slope gutter 10;Light well point 30 is along foundation pit four Week or side sink to the thinner well casing of diameter in the water-bearing layer for being deeper than substrate, and well casing top is connect with general pipeline, pass through general pipeline benefit Underground water is concentrated from well point with pumping equipment and extracts out and drains into corresponding location, original level of ground water is made to be reduced to substrate or less.
Bottom of slope gutter 20 is excavated along foundation pit bottom of slope, and more obvious and bottom of slope is arranged in foundation pit corner in ponding in advance Sump 21;
Foundation pit internal drainage ditch 40 and corresponding sump are completed in earth excavation and structure construction procedure;
Forced-ventilated water pump is set at foundation pit internal drainage ditch 40 and pipeline send water into bottom of slope gutter 20, bottom of slope sump 21 Water is evacuated in top of the slope gutter 10 by place's setting forced-ventilated water pump and pipeline, to complete the building of multilayer gutter drainage system.
The construction method, it then passes through earth excavation to foundation pit by foundation pit top of the slope road second level slope to foundation pit platform Bottom combines the form of the three layers of bright row that catchments, i.e. row in top of the slope gutter, bottom of slope gutter and foundation pit using Application of light well point precipitation Ditch, and setting sump is respectively corresponded, by setting forced-ventilated water pump and pipeline successively by water up one layer of transport, finally pass through Sedimentation basin processing heel row enters municipal sewage pipe network or river.The construction method is easy to operate, and the operation for reducing construction site is difficult Degree, it is at low cost, in large area, deep foundation pit earthwork digging construction, it can effectively solve the problem that the surface water such as foundation pit underground water and rainwater The problem of Foundation Pit Construction is caused, while guaranteeing earth excavation and main structure construction progress.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims Range.

Claims (9)

1. a kind of forced-ventilated water system for super-sized foundation pit, which is characterized in that the foundation pit by top of the slope road second level slope extremely Foundation pit platform, subsequent earth excavation to bottom of foundation ditch, the forced-ventilated water system include:
Top of the slope gutter, the top of the slope gutter are arranged along the foundation pit top of the slope water-stop curtain, the top of the slope gutter and field Area river or municipal sewage pipe network connection;
A top of the slope sump is arranged in the top of the slope gutter in top of the slope sump at spacing intervals;
Light well point, the light well point is between the top of the slope water-stop curtain and the top of the slope gutter;
Bottom of slope gutter, the bottom of slope gutter are set at foundation pit platform;
A bottom of slope sump, the bottom of slope sump is arranged in the bottom of slope gutter in bottom of slope sump at spacing intervals Water is evacuated in the top of the slope gutter by place's setting forced-ventilated water pump and pipeline;
Foundation pit internal drainage ditch, the foundation pit internal drainage ditch are set to the outside of gravity dam, and setting is strong at the foundation pit internal drainage ditch Draining pump and pipeline send water into the bottom of slope gutter.
2. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that the top of the slope gutter Ring group cheats elongated setting, and solid block is built, cement plaster, 2% gradient flashing.
3. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that the side slope angle of slope For i=1:1.5.
4. the forced-ventilated water system according to claim 3 for super-sized foundation pit, which is characterized in that the side slope is thickness For the C20 pea gravel concreten slope protection surface layer of 100mm.
5. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that the foundation pit internal drainage Ditch ring group cheats elongated setting.
6. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that the top of the slope gutter It is closed equipped with concrete cover, and reserved opening.
7. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that a fixed spacing is 40m~60m.
8. the forced-ventilated water system according to claim 1 for super-sized foundation pit, which is characterized in that outside the gravity dam Side is additionally provided with skirt ruggedized construction, and the foundation pit internal drainage ditch side is connect with the gravity dam, and the other side adds with the skirt Fixing structure connection.
9. a kind of construction method of the forced-ventilated water system for super-sized foundation pit characterized by comprising
Top of the slope gutter is excavated along construction road in foundation pit top of the slope, and is closed by precast concrete cover, and box out mouth makes The top of the slope gutter is obtained to be connected to place river or municipal sewage pipe network;
Light well point is set between foundation pit top of the slope water-stop curtain and top of the slope gutter;
Bottom of slope gutter is excavated along foundation pit bottom of slope, and more obvious and foundation pit corner setting bottom of slope is catchmented in ponding in advance Well;
Foundation pit internal drainage ditch and corresponding sump are completed in earth excavation and structure construction procedure;
Forced-ventilated water pump is set at the foundation pit internal drainage ditch and pipeline send water into the bottom of slope gutter, at bottom of slope sump Water is evacuated in the top of the slope gutter by setting forced-ventilated water pump and pipeline, to complete the building of multilayer gutter drainage system.
CN201811579650.0A 2018-12-24 2018-12-24 Strong drainage system for ultra-large deep foundation pit and construction method Pending CN109555141A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112627311A (en) * 2020-12-11 2021-04-09 上海宝冶集团有限公司 Drainage method for building construction in mountainous region with large precipitation
CN118065407A (en) * 2024-04-22 2024-05-24 北京建工四建工程建设有限公司 Temporary slope building construction method for easily-degraded slope

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104110038A (en) * 2014-07-29 2014-10-22 上海市建工设计研究院有限公司 Construction method for large-area pit support structure in deep-sludge type soft soil area
CN206581278U (en) * 2017-02-21 2017-10-24 浙江绿建建筑设计有限公司 Base pit dewatering structure
CN206873477U (en) * 2017-03-31 2018-01-12 青建集团股份公司 A kind of Application of light well point precipitation system
CN209585078U (en) * 2018-12-24 2019-11-05 上海建工二建集团有限公司 Strong drainage system for ultra-large deep foundation pit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104110038A (en) * 2014-07-29 2014-10-22 上海市建工设计研究院有限公司 Construction method for large-area pit support structure in deep-sludge type soft soil area
CN206581278U (en) * 2017-02-21 2017-10-24 浙江绿建建筑设计有限公司 Base pit dewatering structure
CN206873477U (en) * 2017-03-31 2018-01-12 青建集团股份公司 A kind of Application of light well point precipitation system
CN209585078U (en) * 2018-12-24 2019-11-05 上海建工二建集团有限公司 Strong drainage system for ultra-large deep foundation pit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112627311A (en) * 2020-12-11 2021-04-09 上海宝冶集团有限公司 Drainage method for building construction in mountainous region with large precipitation
CN118065407A (en) * 2024-04-22 2024-05-24 北京建工四建工程建设有限公司 Temporary slope building construction method for easily-degraded slope

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Application publication date: 20190402