CN108487276A - A kind of embed-type shallow-layer combined water drain pipe and construction method - Google Patents
A kind of embed-type shallow-layer combined water drain pipe and construction method Download PDFInfo
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- CN108487276A CN108487276A CN201810392984.0A CN201810392984A CN108487276A CN 108487276 A CN108487276 A CN 108487276A CN 201810392984 A CN201810392984 A CN 201810392984A CN 108487276 A CN108487276 A CN 108487276A
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- water drain
- combined water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 137
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 230000008595 infiltration Effects 0.000 claims abstract description 31
- 238000001764 infiltration Methods 0.000 claims abstract description 31
- 238000001914 filtration Methods 0.000 claims abstract description 26
- 239000010410 layer Substances 0.000 claims description 62
- 239000004567 concrete Substances 0.000 claims description 32
- -1 Polypropylene Polymers 0.000 claims description 15
- 239000004743 Polypropylene Substances 0.000 claims description 15
- 229920001155 polypropylene Polymers 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 239000011241 protective layer Substances 0.000 claims description 8
- 238000004078 waterproofing Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 239000002199 base oil Substances 0.000 claims description 5
- 238000001223 reverse osmosis Methods 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 abstract description 7
- 238000013022 venting Methods 0.000 abstract description 2
- 239000002689 soil Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000004746 geotextile Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
The invention discloses a kind of embed-type shallow-layer combined water drain pipes, including filter pipe and seal ring and well casing；Multiple filtration holes are set on the filter pipe, and for collecting the infiltration in foundation pit, seal ring is arranged at the top of filter pipe, and for preventing the upward bleed-through that seeps water, well casing that the top of seal ring is arranged, well casing is connected to filter pipe.The seepage in underground in foundation pit is collected using shallow-layer combined water drain, using water pump venting foundation pit, seal ring effectively prevents the upward inverse-seepage problem of infiltration in catch pit simultaneously, it does not need and carries out dewatering construction and low-cost in the case of professional, the needs of underground engineering part shallow-layer precipitation can be met.
Description
Technical field
The present invention relates to construction waterproof field, specially a kind of embed-type shallow-layer combined water drain pipe and construction method.
Background technology
Recently as China's construction industry and other growing continuously and fast comprising basic job engineering, underground work
Journey is more and more, and scale is also increasing.For underground engineering due to complex geologic conditions, difficulty of construction is big.A part of underground engineering
Level of ground water is higher, therefore during project construction, often wants lowering of watertable.
What is be commonly used has precipitation method to have：Bright ditch add sump row drop method, light well point method, ejector well point method,
Pipe well points method, deep well points method and comprehensive well-point method, water-stop curtain method etc..These methods not only need a large amount of artificial, machineries,
And because complex process need professional carry out dewatering construction cause it is costly.
Problem in view of the prior art, it is necessary to a kind of dewatering device of simple structure is designed, it can be in no professional people
Precipitation is carried out in the case of member to apply, and the method that operating expenses is low, can meet the needs of underground engineering part shallow-layer precipitation.
Invention content
For problems of the prior art, a kind of embed-type shallow-layer combined water drain pipe of present invention offer and construction party
Seepage in underground is collected by method in foundation pit embedded set combined water drain pipe, and foundation pit then is discharged by water pump in drainpipe.The group
Closing drainpipe can quickly solve the problems, such as that foundation pit seeps water, and meet the needs of underground engineering part shallow-layer precipitation.
The present invention is to be achieved through the following technical solutions：
A kind of embed-type shallow-layer combined water drain pipe, including filter pipe and seal ring and well casing；It is arranged on the filter pipe more
A filtration hole, for collecting the infiltration in foundation pit, seal ring is arranged at the top of filter pipe, for preventing the upward bleed-through that seeps water,
The top of seal ring is arranged in well casing, and well casing is connected to filter pipe.
Preferably, the also horizontal connection of the lower part of the filter pipe has multiple water filter well branch pipes, is collected for increasing filter pipe
The area of infiltration is provided with filtration hole on water filter well branch pipe.
Preferably, the water filter well branch pipe is multiple, and multiple water filter well branch pipe circumference uniform distributions are in the lower part that water filter well is responsible for.
Preferably, the seal ring is more than 200mm at a distance from nearest filtration hole
Preferably, the water filter well branch pipe diameter is more than 300mm.
Preferably, the diameter of the well casing is more than 600mm.
Preferably, the aperture of the filtration hole is less than the diameter of gravel in foundation pit.
The present invention also provides a kind of construction methods of combined water drain pipe, include the following steps：
Step 1 excavates catch pit in the infiltration area of foundation pit；
Combined water drain pipe is placed in catch pit by step 2, and water plug is placed in combined water drain pipe and is drawn water,
Seal ring is set to be located at water level line or more；
Step 3, combined water drain pipe surrounding is backfilled using gravel in step 2 catch pit, and the backfill height of gravel layer is higher than
Highest filtration hole；
At least one layer of waterproof layer is arranged at the top of gravel layer in step 4；
Step 5 takes out the water plug in combined water drain pipe, is closed to combined water drain pipe.
Preferably, the concrete construction method of waterproof layer includes the following steps in step 4：
1) it is laid with first layer Polypropylene at the top of gravel layer and carries out first time water-proofing treatment；
2) the casting concrete bed course on first layer Polypropylene, and will be in seal ring Transducers Embedded in Concrete bed course；
3) second of water-proofing treatment is carried out in concrete cushion upper berth second layer Polypropylene；
4) the casting concrete protective layer on second layer Polypropylene.
Preferably, further comprising the steps of, the well casing of concrete cover, foundation pit bed course and combined water drain pipe is integrally brushed
Cold base oil, and set up defences water layer and concrete water-proof protective layer on cold base oil upper berth.
Preferably, further comprising the steps of, pour raft board concrete on fish tail and waterproof layer, and by the well of combined water drain pipe
Pipe is embedded in raft board concrete.
Compared with prior art, the present invention has technique effect beneficial below：
A kind of combined water drain pipe provided by the invention, is arranged filtration hole on filter pipe, and combined water drain pipe is embedded in collection
In puddle, infiltration enters the lower part of filter pipe by filtration hole, is extracted out the water of the lower part of filter pipe by water pump, while filtering
Seal ring is arranged in the top of water pipe, effectively prevents the upward reverse osmosis of infiltration in catch pit.The apparatus structure is simple, and operation is just
Victory can handle infiltration under the premise of not needing professional, meet the needs of underground engineering part shallow-layer precipitation.
Filter pipe branch pipe is set in the lower part of filter pipe, improves the speed collected and seeped water in foundation pit.
The aperture of filtration hole is less than the diameter of gravel, prevents gravel by drainage blockage.
The construction method of combined water drain pipe provided by the invention, combined water drain pipe is embedded in foundation pit, then uses gravel
Stone backfills, and ensures that infiltration can be entered through gravel in filter pipe, while multilayer flashing processing is done at the top of gravel, effectively
It prevents underground water reverse osmosis from going out earth's surface, is then integrally doing a waterproof with main building and protective layer is set, be completed at the same time after drawing water,
By combined water drain duct occlusion, water-proofing treatment then is carried out at the critical point to combined water drain pipe, using combined water drain pipe combination multilayer
The construction method of waterproof layer perfectly solves the problems, such as underground water reverse osmosis.
Description of the drawings
Fig. 1 is the front view of combined water drain pipe of the present invention；
Fig. 2 is the vertical view of combined water drain pipe of the present invention；
Fig. 3 is the construction drawing of combined water drain pipe of the present invention.
In figure：1, well casing；2, seal ring；3, water filter well is responsible for；4, water filter well branch pipe；5, filtration hole 6, drainage layer；7, gravel
Rock layers；8, first layer Polypropylene；9 concrete cushions；10, second layer Polypropylene；11, pea gravel concreten；12, waterproof layer；13, it mixes
Solidifying soil fish tail and waterproof layer.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings, described to be explanation of the invention rather than limit
It is fixed.
As illustrated in fig. 1 and 2, a kind of embed-type shallow-layer combined water drain pipe, including well casing 1, seal ring 2, water filter well supervisor 3,
Water filter well branch pipe 4, filtration hole 5.
Wherein, water filter well supervisor 3 is embedded in the bottom of catch pit in foundation pit vertically, and water filter well supervisor 3 is bottom lock
The structure of barreled, water filter well are responsible on 3 side wall and are provided with multiple filtration holes 5, and the infiltration in soakaway enters through filtered water bore 5
Into water filter well supervisor 3, the diameter of adjustment water filter well supervisor 3 is determined according to infiltration area, water velocity size.
Water filter well supervisor 3 top be arranged seal ring 2, and seal ring be at a distance from highest filtration hole on filter pipe
200mm；The upward reverse osmosis of catch pit lower part infiltration, the steel plate thickness of seal ring 2 is prevented to be not less than 3mm, ensure certain rigidity, protect
Card service personnel can normal stand in above, facilitating construction.The top of seal ring 2 is connected with well casing 1, and water pump passes through under well casing 1
The bottom for entering water filter well supervisor 3 pulls water out, and the size of well casing 1 is determined according to displacement size, but no less than 600mm.Well
Thickness of pipe wall requires to be more than or equal to 2mm, and to have preferable rigidity.
It is multiple in the lower horizontal setting of water filter well supervisor 3 in order to further increase the speed collected and seeped water in catch pit
Multiple rows of filtration hole 5 is arranged on water filter well branch pipe 4 for water filter well branch pipe 4, and the end of water filter well branch pipe 4 is using infiltration non-woven geotextile
It is closed.Multiple water filter well branch pipes 4 are simultaneously collected the infiltration in foundation pit, greatly improve the collection efficiency of infiltration.
For water filter well supervisor 3 with water filter well branch pipe 4 preferably using connection is tilted, the one end of water filter well supervisor 3 far from water filter well supervisor 3 is upward
It tilts, the infiltration for being conducive to collect in water filter well supervisor 3 can be left in water filter well supervisor 3.
It is preferred that using 4 water filter well branch pipes 4, circumference uniform distribution is in the lower end of water filter well supervisor 3, water filter well branch pipe 4 and drainage
Well supervisor 3, which uses, to be welded to connect.The aperture of water filter well supervisor 3 is more than 300mm.
Filtration hole enters water-filtering well tube by the infiltration in catch pit, and drainage aperture should be less than the grain of filled drainage stone
Diameter prevents stone from blocking filtration hole.
The non-woven geotextile that seeps water has outstanding filtering, isolation, reinforcement protection effect, tensile strength height, good penetrability, resistance to
It is high temperature, anti-freezing, ageing-resistant, corrosion-resistant；Effect is to prevent the sundries such as soil, sandstone from entering in water-filtering well tube.
Below by taking elevator seeps water as an example, the construction method of the embed-type shallow-layer combined water drain pipe is carried out detailed
Illustrate, as shown in Figure 3.
Step 1, catch pit is excavated in the infiltration area of elevator in foundation pit, and the depth of catch pit designs hole bottom mark for elevator
Relative superiority or inferiority 1.3m.
Step 2, the drainage layer 6 for being laid with 300mm thickness using gravel in the bottom of catch pit, then place combined water drain pipe, gravel
The grain size of stone is 30mm~50mm.
Step 3, drainage gravel is filled out in root on the outside of combined water drain pipe, while placing water pump in combined water drain pipe and starting to take out
Water, for the water level line of infiltration less than 500mm under foundation pit absolute altitude, seal ring is located at water level line or more.
Step 4, combined water drain pipe surrounding uses grain size to be backfilled to filter pipe most for 30mm~50mm gravels in catch pit
High drainage hole site, that is, position, the grain size of the gravel of gravel layer 7 are more than the diameter of filtration hole at 200mm under seal ring.
Step 5 is laid with first layer Polypropylene 8 at the top of gravel layer 7 and carries out first time water-proofing treatment, prevent underground water to
Upper infiltration, the then casting concrete bed course 9 on first layer Polypropylene, and by seal ring Transducers Embedded in Concrete bed course 9, then mixed
9 upper berth second layer Polypropylene 10 of solidifying soil padding carries out second of water-proofing treatment, finally does coagulation again on second layer Polypropylene 10
Protective soil layer, concrete cover are 100mm thickness pea gravel concreten 11.
Since there are gap, small part infiltration can be along tube wall after long-time between first layer Polypropylene and combined water drain pipe
It permeates up, seal ring can prevent water from continuing up infiltration, so that the water that infiltration comes up is changed infiltration direction, along concrete cushion
9 horizontal direction infiltration, due to being also equipped with the second waterproof layer on concrete cushion 9, effectively prevents groundwater seepage
Into foundation pit.
Step 6 extracts water pump in combined water drain pipe out, closes to combined water drain pipe, is poured in combined water drain pipe
C35 or more rank water-tight concretes, water-tight concrete are poured to the nozzle of combined water drain pipe.
Step 7 integrally brushes the well casing of concrete cover 11, foundation pit bed course and combined water drain pipe cold base oil, and whole
Be laid with waterproof layer 12, the then casting concrete fish tail and waterproof layer 13 on waterproof layer 12, waterproof layer 12 using SBS waterproof rolls into
Row is laid with, and concrete water-proof protective layer 13 is pea gravel concreten protective layer.Further setting waterproof layer 12 ensures that underground water cannot
It penetrates into elevator.
Step 8 pours raft board concrete on concrete water-proof protective layer 13, and the well casing of combined water drain pipe is embedded in
In raft board concrete.
Seepage in underground in foundation pit is collected by the combined water drain pipe and its construction method using shallow-layer combined water drain,
Using water pump venting foundation pit, while seal ring effectively prevents the upward inverse-seepage problem of infiltration in catch pit, it does not need professional people
Member carries out dewatering construction and expense is extremely low, can meet the needs of underground engineering part shallow-layer precipitation.
The above content is merely illustrative of the invention's technical idea, and protection scope of the present invention cannot be limited with this, every to press
According to technological thought proposed by the present invention, any change done on the basis of technical solution each falls within claims of the present invention
Protection domain within.
Claims (10)
1. a kind of embed-type shallow-layer combined water drain pipe, which is characterized in that including filter pipe, seal ring (2) and well casing (1)；
Multiple filtration holes (5) are set on the filter pipe, and for collecting the infiltration in catch pit, seal ring (2) is arranged in drainage
The top of pipe, for preventing infiltration reverse osmosis upwards, well casing (1) is arranged in the top of seal ring (2), well casing (1) and filter pipe
Connection.
2. a kind of embed-type shallow-layer combined water drain pipe according to claim 1, which is characterized in that the lower part of the filter pipe is also
Horizontal connection has multiple water filter well branch pipes (4), and the area of infiltration is collected for increasing filter pipe, and water filter well branch pipe is arranged on (4)
There is filtration hole.
3. a kind of embed-type shallow-layer combined water drain pipe according to claim 1, which is characterized in that the seal ring (2) with most
The vertical range of close filtration hole is more than 200mm.
4. a kind of embed-type shallow-layer combined water drain pipe according to claim 2, which is characterized in that the water filter well branch pipe (4)
Diameter is more than 300mm, and the diameter of well casing (1) is more than 600mm.
5. a kind of embed-type shallow-layer combined water drain pipe according to claim 2, which is characterized in that the water filter well branch pipe (4)
It tilts and connects with water filter well supervisor (3), ensure that the infiltration in water filter well branch pipe (4) can be flow to certainly in water filter well supervisor (3).
6. a kind of embed-type shallow-layer combined water drain pipe according to claim 1, which is characterized in that the hole of the filtration hole (5)
Diameter is less than the diameter of backfill gravel.
7. the construction method of combined water drain pipe described in a kind of claim 1, which is characterized in that include the following steps：
Step 1 excavates catch pit in the infiltration area of foundation pit；
Combined water drain pipe is placed in catch pit by step 2, and water plug is placed in combined water drain pipe and is drawn water, makes to stop
Water ring is located at water level line or more；
Step 3, combined water drain pipe surrounding is backfilled using gravel in step 2 catch pit, and the backfill height of gravel layer (7) is higher than most
High filtration hole (5)；
At least one layer of waterproof layer is arranged at the top of gravel layer (7) in step 4；
Step 5 takes out the water plug in combined water drain pipe, is closed to combined water drain pipe.
8. the construction method of combined water drain pipe according to claim 7, which is characterized in that the specific of waterproof layer is applied in step 4
Work method includes the following steps：
1) it is laid with first layer Polypropylene (8) at the top of gravel layer (7) and carries out first time water-proofing treatment；
2) the casting concrete bed course (9) on first layer Polypropylene (8), and will be in seal ring Transducers Embedded in Concrete bed course；
3) second of water-proofing treatment is carried out in concrete cushion (9) upper berth second layer Polypropylene (10)；
4) the casting concrete protective layer on second layer Polypropylene (10).
9. the construction method of combined water drain pipe according to claim 8, which is characterized in that further include to concrete cover,
The well casing of foundation pit bed course and combined water drain pipe integrally brushes cold base oil, and sets up defences water layer (12) and concrete water-proof on cold base oil upper berth
Protective layer (13).
10. the construction method of combined water drain pipe according to claim 9, which is characterized in that further include being protected in concrete water-proof
Raft board concrete is poured on sheath (13), and the well casing of combined water drain pipe is embedded in raft board concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810392984.0A CN108487276A (en) | 2018-04-27 | 2018-04-27 | A kind of embed-type shallow-layer combined water drain pipe and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810392984.0A CN108487276A (en) | 2018-04-27 | 2018-04-27 | A kind of embed-type shallow-layer combined water drain pipe and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN108487276A true CN108487276A (en) | 2018-09-04 |
Family
ID=63313203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810392984.0A Pending CN108487276A (en) | 2018-04-27 | 2018-04-27 | A kind of embed-type shallow-layer combined water drain pipe and construction method |
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| CN (1) | CN108487276A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868832A (en) * | 2019-01-23 | 2019-06-11 | 温州谦全建设有限公司 | A kind of foundation pit Yield rainfall relation device and its construction method |
| CN110004935A (en) * | 2019-04-22 | 2019-07-12 | 上海建工一建集团有限公司 | A local deep pit diversion drainage ditch system and construction method |
| CN110820778A (en) * | 2019-10-25 | 2020-02-21 | 陕西神州实业有限公司 | Local precipitation construction method for foundation pit |
| CN111021383A (en) * | 2019-12-03 | 2020-04-17 | 中国二十冶集团有限公司 | Deep foundation pit pressure-bearing drainage device and application method thereof |
| CN111549808A (en) * | 2020-04-30 | 2020-08-18 | 同济大学 | Telescopic antenna type tree root filter pipe dewatering well and method for drilling bottom expansion |
| CN112709246A (en) * | 2020-12-25 | 2021-04-27 | 上海二十冶建设有限公司 | Treatment method for local water burst of foundation pit |
| CN113089704A (en) * | 2021-04-09 | 2021-07-09 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Water guide structure for foundation pit dewatering of sand bed foundation |
| CN115142482A (en) * | 2022-07-04 | 2022-10-04 | 中国十九冶集团有限公司 | Later-stage anti-floating reinforcement treatment method for basement |
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| CN202730778U (en) * | 2012-07-02 | 2013-02-13 | 上海长凯岩土工程有限公司 | Well sealing structure of relief well in foundation pit |
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| CN103967028A (en) * | 2014-05-27 | 2014-08-06 | 江苏南通三建集团有限公司 | Immersed tube drainage structure and method for handling suddenly-produced foundation pit water bursting and fountains through immersed tube drainage structure |
| CN104563145A (en) * | 2015-01-21 | 2015-04-29 | 江苏盐城二建集团有限公司 | Rock foundation small guide pipe partial water level lowering device and implementation method thereof |
| CN204590051U (en) * | 2015-04-27 | 2015-08-26 | 山西四建集团有限公司 | One is foundation pit dewatering device among a small circle |
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| JPS5718032U (en) * | 1980-06-30 | 1982-01-29 | ||
| JPH09328742A (en) * | 1996-06-10 | 1997-12-22 | Mitsui Eng & Shipbuild Co Ltd | Groundwater level lowering method |
| CN103161172A (en) * | 2012-05-29 | 2013-06-19 | 中国二十二冶集团有限公司 | Elevator shaft bottom precipitation construction method |
| CN202730778U (en) * | 2012-07-02 | 2013-02-13 | 上海长凯岩土工程有限公司 | Well sealing structure of relief well in foundation pit |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868832A (en) * | 2019-01-23 | 2019-06-11 | 温州谦全建设有限公司 | A kind of foundation pit Yield rainfall relation device and its construction method |
| CN110004935A (en) * | 2019-04-22 | 2019-07-12 | 上海建工一建集团有限公司 | A local deep pit diversion drainage ditch system and construction method |
| CN110820778A (en) * | 2019-10-25 | 2020-02-21 | 陕西神州实业有限公司 | Local precipitation construction method for foundation pit |
| CN111021383A (en) * | 2019-12-03 | 2020-04-17 | 中国二十冶集团有限公司 | Deep foundation pit pressure-bearing drainage device and application method thereof |
| CN111021383B (en) * | 2019-12-03 | 2021-06-01 | 中国二十冶集团有限公司 | Deep foundation pit pressure-bearing drainage device and application method thereof |
| CN111549808A (en) * | 2020-04-30 | 2020-08-18 | 同济大学 | Telescopic antenna type tree root filter pipe dewatering well and method for drilling bottom expansion |
| CN112709246A (en) * | 2020-12-25 | 2021-04-27 | 上海二十冶建设有限公司 | Treatment method for local water burst of foundation pit |
| CN113089704A (en) * | 2021-04-09 | 2021-07-09 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Water guide structure for foundation pit dewatering of sand bed foundation |
| CN115142482A (en) * | 2022-07-04 | 2022-10-04 | 中国十九冶集团有限公司 | Later-stage anti-floating reinforcement treatment method for basement |
| CN115142482B (en) * | 2022-07-04 | 2024-02-13 | 中国十九冶集团有限公司 | Later-stage anti-floating reinforcement treatment method for basement |
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Application publication date: 20180904 |