CN115288173A - Foundation pit drainage system and method - Google Patents
Foundation pit drainage system and method Download PDFInfo
- Publication number
- CN115288173A CN115288173A CN202211118470.9A CN202211118470A CN115288173A CN 115288173 A CN115288173 A CN 115288173A CN 202211118470 A CN202211118470 A CN 202211118470A CN 115288173 A CN115288173 A CN 115288173A
- Authority
- CN
- China
- Prior art keywords
- foundation pit
- water
- drainage
- pipe
- side wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Public Health (AREA)
- Health & Medical Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to the technical field of building construction, and aims to solve the problems of low drainage efficiency, easy sand accumulation and pipe blockage, incapability of continuously reducing water in the concrete pouring process of a raft plate and disordered water seepage of the side wall of a foundation pit in the traditional foundation pit drainage mode; the invention arranges the half-filtering water pipes on the side wall of the foundation pit, the bottom of the foundation pit and the post-cast strip, connects the half-filtering water pipes to the drain pipes, effectively organizes disordered leaking water, performs organized drainage on the bottom of the foundation pit, the side wall of the foundation pit and the post-cast strip, and improves water collection efficiency by using height difference and negative pressure; water is pumped and drained to the sedimentation tank through blind well precipitation, underground water is collected and utilized, and water resources are saved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a foundation pit drainage system and a foundation pit drainage method.
Background
In the process of foundation pit construction in areas with abundant groundwater, the foundation pit often needs to be subjected to precipitation in the foundation construction stage, and drainage ditches are arranged in the foundation pit and at the periphery of the foundation pit for surface drainage and precipitation are the most common. Usually, one or more drainage ditches are excavated at the lower part in the foundation pit of the construction area, water is collected in a water collecting well through the drainage ditches, and water is pumped out of the foundation pit by a water pump in the water collecting well so as to achieve the purpose of precipitation. The precipitation mode easily causes sediment to deposit in the drainage ditch and the water collecting well, blocks a water pump and a water pump pipeline and needs frequent maintenance; simultaneously the inside escape canal of construction area also can influence the construction of earthwork excavation, basic cushion, leads to precipitation efficiency not high. If because of the place restriction, the sump pit sets up inside the foundation ditch, then the pipeline of drainage can pass bed course, waterproof layer, basic raft, can not last precipitation at raft concreting in-process, also can influence the raft and pour the quality.
Except the precipitation of foundation ditch bottom, the infiltration of present foundation ditch lateral wall often is unordered drainage, and the seepage point does not have effectual mode to carry out the drainage tissue at each position of foundation ditch lateral wall, and traditional grout shutoff is only temporary solution and permanent solution, can't dredge the rivers of lateral wall, influences the construction safety of foundation ditch.
Disclosure of Invention
The invention aims to provide a foundation pit drainage system and a foundation pit drainage method, and aims to solve the problems that a traditional foundation pit drainage mode is low in drainage efficiency, sand is easy to accumulate to block a pipe, water cannot be continuously reduced in a raft plate concrete pouring process, and disordered water seepage occurs on the side wall of a foundation pit.
The invention is realized by adopting the following technical scheme:
the invention provides a foundation pit drainage system which comprises half-filtering water pipes arranged on the side wall of a foundation pit, the bottom of the foundation pit and a post-pouring belt, wherein water filtering holes are formed in the upper parts of the half-filtering water pipes, the half-filtering water pipes are connected to a negative pressure pump through a water drainage pipe, the negative pressure pump is arranged in a blind well, and the blind well is connected to a sedimentation tank through a pipeline.
According to the invention, the semi-filtration water pipes are arranged on the side wall of the foundation pit, the bottom of the foundation pit and the post-cast strip, and are connected to the drain pipes, so that disordered seepage water is effectively organized, organized drainage is carried out on the bottom of the foundation pit, the side wall of the foundation pit and the post-cast strip, and the water collection efficiency is improved by utilizing the height difference and the negative pressure, so that the problems of low drainage efficiency, easiness in sand accumulation and pipe blockage, incapability of continuously reducing water in the concrete pouring process of a raft, disordered seepage of the side wall of the foundation pit and the like in the prior art are solved.
According to the invention, water is pumped and drained to the sedimentation tank through the blind well dewatering, and underground water is collected and utilized, so that the purpose of saving water resources is achieved.
As a preferred technical scheme:
the semi-filtration water pipe and the drain pipe are positioned below the foundation mat layer.
The follow-up construction is not influenced, the water drainage is not interrupted in the concrete raft plate pouring process, the waterproof layer is not damaged, and the water drainage efficiency can be greatly improved.
As a preferable technical scheme:
the semi-filtration water pipe arranged at the bottom of the foundation pit and the post-pouring belt is wrapped by crushed stones.
As a preferred technical scheme:
be equipped with a plurality ofly on the foundation ditch lateral wall half the strainer, just half the strainer sets up for the slope, half the downward one end of strainer slope is connected to vertical drain pipe, vertical drain pipe is connected to total drain pipe.
As a preferable technical scheme:
the semi-filtration water pipes on the side wall of the foundation pit are arranged at intervals along the depth direction of the foundation pit.
As a preferred technical scheme:
the foundation pit side wall and the foundation pit bottom half filter water pipe is connected to through horizontal drain pipe the total drain pipe.
As a preferred technical scheme:
and a water suction pump is arranged in the sedimentation tank.
The underground water is convenient to be pumped out.
As a preferred technical scheme:
the negative pressure pump may be a submersible pump.
The invention further provides a foundation pit drainage method, which comprises the following steps:
the method comprises the following steps: arranging half-filtering water pipes on the side wall of the foundation pit, the bottom of the foundation pit and the post-cast strip;
wrapping the semi-filtered water pipes at the bottom of the foundation pit and the post-cast strip with gravels, and connecting the semi-filtered water pipes to a main drainage pipe through a horizontal drainage pipe; the semi-filtered water pipe on the side wall of the foundation pit is obliquely arranged and connected to a vertical water drainage pipe, and the vertical water drainage pipe is connected to the main water drainage pipe;
step two: and connecting the main drainage pipe to a negative pressure pump, placing the negative pressure pump in a blind well, and connecting the blind well to a sedimentation tank through a pipeline.
By adopting the method, the water on the side wall of the foundation pit is smoothly discharged into the vertical drain pipe through the half-filtering water pipes by utilizing the height difference between the half-filtering water pipes on the side wall of the foundation pit and is discharged into the main drain pipe through the vertical drain pipe, and the water in the horizontal drain pipe and the vertical drain pipe can more favorably enter the blind well by utilizing the negative pressure action of the negative pressure pump, so that organized high-efficiency water reduction and drainage are realized, the subsequent engineering construction is not influenced.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the invention can utilize the height difference and the negative pressure to realize the organized high-efficiency dewatering and drainage of the foundation pit, the drainage pipeline is embedded under the foundation bed, the subsequent construction is not influenced, the drainage is not interrupted when the raft is poured, the waterproof layer is not damaged, and the dewatering and drainage efficiency can be greatly improved.
Drawings
Fig. 1 is a schematic perspective view of a foundation pit drainage system according to the present invention.
Fig. 2 is a schematic plan structure view of the foundation pit drainage system according to the present invention.
Fig. 3 is a schematic structural view of a half-filtration water pipe according to the present invention.
Fig. 4 is a schematic layout view of the half-filtration water pipes on the side wall of the foundation pit according to the invention.
An icon: 1-half filter water pipe, 2-vertical drain pipe, 3-horizontal drain pipe, 4-total drain pipe, 5-foundation pit bottom, 6-post-cast strip, 7-broken stone, 8-raft, 9-raft reinforcing steel bar, 10-water-stop steel plate, 11-L-shaped angle steel, 12-clay, 13-cover plate, 14-negative pressure pump, 15-blind well, 16-sedimentation tank and 17-water filtering hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 and fig. 2, the present embodiment provides a foundation pit drainage system, including a half-filtered water pipe 1 disposed at a side wall of a foundation pit, a bottom 5 of the foundation pit, and a post-cast strip 6, where the half-filtered water pipe 1 is connected to a negative pressure pump 14 through a drain pipe, the negative pressure pump 14 is disposed in a blind well 15, the blind well 15 is connected to a sedimentation tank 16 through a pipeline, and a water pump is disposed in the sedimentation tank 16. As shown in fig. 3, the half-filtered water pipe 1 is provided at an upper half thereof with a water filtering hole 17.
In this embodiment, half filter pipe 1 with the drain pipe is located under the foundation bed course, does not influence follow-up construction, and uninterrupted drainage does not destroy the waterproof layer, can greatly improve and fall drainage efficiency.
In this embodiment, as shown in fig. 2 and 4, the side wall of the foundation pit is provided with a plurality of the half-filtration water pipes 1, the half-filtration water pipes 1 on the side wall of the foundation pit are uniformly arranged at intervals along the depth direction of the foundation pit, so that water on the side wall of the foundation pit is uniformly discharged into the half-filtration water pipes 1. Half strainer 1 sets up for the slope, the decurrent one end of half strainer 1 slope is connected to vertical drain pipe 2, vertical drain pipe 2 is connected to total drain pipe 4, is convenient for water on the half strainer 1 gets into smoothly in the vertical drain pipe 2, then passes through vertical drain pipe 2 arrange extremely in the total drain pipe 4, total drain pipe 4 with negative pressure pump 14 links to each other.
In this embodiment, after the excavation of the foundation pit is completed, a trench is excavated at the post-cast strip 6, the bottom 5 of the foundation pit, a large amount of water inflow, and the like, and the half-filter water pipes 1 are buried and wrapped with crushed stones 7. The side wall of the foundation pit and the half-filtering water pipes 1 at the bottom 5 of the foundation pit are connected to the main water drainage pipe 4 through horizontal water drainage pipes 3. The horizontal drain pipe 3 is only an example, and a horizontal pipe may not be used.
In this embodiment, the foundation pad layer includes concrete rafts 8, and raft steel bars 9 are provided in the rafts 8. The both sides of post-cast strip 6 are equipped with stagnant water steel sheet 10 and L type angle steel 11 on raft 8, the upper portion of post-cast strip 6 is sealed through apron 13, the lower part of post-cast strip 6 is backfilled through clay 12, half cross strainer 1 and be located the below of clay 12 is wrapped up through rubble 7.
According to the invention, the half-filtering water pipes 1 are arranged at the side wall of the foundation pit, the bottom 5 of the foundation pit and the post-pouring belt 6, the half-filtering water pipes 1 are connected to the drain pipes, disordered leaking water is effectively organized, organized water reduction and drainage are carried out on the bottom 5 of the foundation pit, the side wall of the foundation pit and the post-pouring belt 6, and the water collection efficiency is improved by utilizing the height difference and the negative pressure, so that the problems of low drainage efficiency, easiness in sand accumulation and pipe blockage, incapability of continuous water reduction in the concrete pouring process of a raft, disordered water seepage of the side wall of the foundation pit and the like in the prior art are solved.
The invention pumps and drains water to the sedimentation tank 16 through the blind well 15 precipitation, and collects and utilizes the underground water, thereby achieving the purpose of saving water resources.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A foundation pit drainage system which characterized in that:
include the half strainer that crosses that sets up in foundation ditch lateral wall, foundation ditch bottom and post-cast strip department, the upper portion of half strainer is equipped with the drainage hole, half strainer passes through drain pipe connection to negative pressure pump, the negative pressure pump is arranged in the blind well, the blind well passes through pipe connection to sedimentation tank.
2. A foundation pit drainage system according to claim 1, wherein:
the semi-filtration water pipe and the drain pipe are positioned below the foundation mat layer.
3. The foundation pit drainage system of claim 1, wherein:
the semi-filtration water pipes arranged at the bottom of the foundation pit and the post-pouring belt are wrapped by crushed stones.
4. The foundation pit drainage system of claim 1, wherein:
be equipped with a plurality ofly on the foundation ditch lateral wall half the strainer, just half the strainer sets up for the slope, half the downward one end of strainer slope is connected to vertical drain pipe, vertical drain pipe is connected to total drain pipe.
5. The foundation pit drainage system of claim 4, wherein:
the semi-filtration water pipes on the side wall of the foundation pit are arranged at intervals along the depth direction of the foundation pit.
6. The foundation pit drainage system of claim 4, wherein:
the side wall of the foundation pit and the semi-filtering water pipe at the bottom of the foundation pit are connected to the main drainage pipe through a horizontal drainage pipe.
7. A foundation pit drainage system according to claim 1, wherein:
and a water suction pump is arranged in the sedimentation tank.
8. A foundation pit drainage method is characterized in that: the method comprises the following steps:
the method comprises the following steps: arranging half-filtering water pipes on the side wall of the foundation pit, the bottom of the foundation pit and the post-cast strip;
wrapping the semi-filtered water pipes at the bottom of the foundation pit and the post-cast strip with gravels, and connecting the semi-filtered water pipes to a main drainage pipe through a horizontal drainage pipe; the semi-filtered water pipe on the side wall of the foundation pit is obliquely arranged and connected to a vertical water drainage pipe, and the vertical water drainage pipe is connected to the main water drainage pipe;
step two: and connecting the main drainage pipe to a negative pressure pump, placing the negative pressure pump in a blind well, and connecting the blind well to a sedimentation tank through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211118470.9A CN115288173A (en) | 2022-09-13 | 2022-09-13 | Foundation pit drainage system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211118470.9A CN115288173A (en) | 2022-09-13 | 2022-09-13 | Foundation pit drainage system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115288173A true CN115288173A (en) | 2022-11-04 |
Family
ID=83834348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211118470.9A Pending CN115288173A (en) | 2022-09-13 | 2022-09-13 | Foundation pit drainage system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115288173A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203947484U (en) * | 2014-06-04 | 2014-11-19 | 中国建筑第二工程局有限公司 | Foundation pit drainage and circulating water utilization system |
| CN206256457U (en) * | 2016-12-16 | 2017-06-16 | 天津圣业达地基加固工程有限公司 | A kind of priming device of foundation pit side-wall |
| CN110004935A (en) * | 2019-04-22 | 2019-07-12 | 上海建工一建集团有限公司 | A kind of locally deep pit drain measure trench system and construction method |
| CN110219313A (en) * | 2019-06-05 | 2019-09-10 | 中国五冶集团有限公司 | A kind of underground construction blind shaft drainage system and construction method |
| CN210263099U (en) * | 2019-06-24 | 2020-04-07 | 黄河交通学院 | Foundation ditch lateral wall diversion device |
| CN111101531A (en) * | 2020-01-16 | 2020-05-05 | 商丘师范学院 | Foundation pit drainage system |
| CN112049136A (en) * | 2020-07-23 | 2020-12-08 | 温州京久基础工程有限公司 | Foundation pit drainage device |
| CN213709593U (en) * | 2020-10-20 | 2021-07-16 | 惠州市鸿泰建筑工程有限公司 | Energy-saving foundation pit drainage system |
| CN215906826U (en) * | 2021-09-06 | 2022-02-25 | 中交一公局集团有限公司 | Drainage construction equipment falls in elevartor shaft foundation ditch |
| CN216586625U (en) * | 2021-09-24 | 2022-05-24 | 武汉华太岩土工程有限公司 | Foundation pit drainage structure |
| CN114737589A (en) * | 2022-05-30 | 2022-07-12 | 中国二十二冶集团有限公司 | Foundation pit shallow layer drainage method |
| CN217325442U (en) * | 2022-05-30 | 2022-08-30 | 中国二十二冶集团有限公司 | Foundation pit shallow drainage system |
-
2022
- 2022-09-13 CN CN202211118470.9A patent/CN115288173A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203947484U (en) * | 2014-06-04 | 2014-11-19 | 中国建筑第二工程局有限公司 | Foundation pit drainage and circulating water utilization system |
| CN206256457U (en) * | 2016-12-16 | 2017-06-16 | 天津圣业达地基加固工程有限公司 | A kind of priming device of foundation pit side-wall |
| CN110004935A (en) * | 2019-04-22 | 2019-07-12 | 上海建工一建集团有限公司 | A kind of locally deep pit drain measure trench system and construction method |
| CN110219313A (en) * | 2019-06-05 | 2019-09-10 | 中国五冶集团有限公司 | A kind of underground construction blind shaft drainage system and construction method |
| CN210263099U (en) * | 2019-06-24 | 2020-04-07 | 黄河交通学院 | Foundation ditch lateral wall diversion device |
| CN111101531A (en) * | 2020-01-16 | 2020-05-05 | 商丘师范学院 | Foundation pit drainage system |
| CN112049136A (en) * | 2020-07-23 | 2020-12-08 | 温州京久基础工程有限公司 | Foundation pit drainage device |
| CN213709593U (en) * | 2020-10-20 | 2021-07-16 | 惠州市鸿泰建筑工程有限公司 | Energy-saving foundation pit drainage system |
| CN215906826U (en) * | 2021-09-06 | 2022-02-25 | 中交一公局集团有限公司 | Drainage construction equipment falls in elevartor shaft foundation ditch |
| CN216586625U (en) * | 2021-09-24 | 2022-05-24 | 武汉华太岩土工程有限公司 | Foundation pit drainage structure |
| CN114737589A (en) * | 2022-05-30 | 2022-07-12 | 中国二十二冶集团有限公司 | Foundation pit shallow layer drainage method |
| CN217325442U (en) * | 2022-05-30 | 2022-08-30 | 中国二十二冶集团有限公司 | Foundation pit shallow drainage system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109371918B (en) | Dam structure with permanent combination of multifunctional drainage box culvert and construction method thereof | |
| CN210066791U (en) | A precipitation combined system that is used for foundation ditch pressure release precipitation and dredges precipitation | |
| CN103046565A (en) | Draining method for ultra-deep batholith deep foundation pit | |
| CN111236284A (en) | Basement bottom and periphery underground water drainage method and structure | |
| CN110847199A (en) | Construction method for drainage of underground water of deep foundation pit | |
| CN218148458U (en) | Deep water deep foundation pit drainage system of fissure development rock stratum | |
| CN217325442U (en) | Foundation pit shallow drainage system | |
| CN110185051A (en) | Deep narrow excavation water discharge method | |
| CN214993978U (en) | Quick drainage system of deep foundation pit | |
| CN114775699A (en) | Post-cast strip structure and construction method thereof | |
| CN115288173A (en) | Foundation pit drainage system and method | |
| CN104846837A (en) | Construction method for ultra-deep well pit in surface drainage foundation pit | |
| CN214116866U (en) | Multilayer composite drainage system of abandoned slag yard | |
| CN211898587U (en) | Rear-mounted thin-wall steel pipe water draining device for large bottom plate anti-floating | |
| CN206477347U (en) | The water storage structure of basement | |
| CN220908447U (en) | Prefabricated anti-floating well construction structure | |
| CN220132951U (en) | Basement dewatering seepage-proofing leakage killing well | |
| CN220117401U (en) | Assembled dirt-intercepting and intercepting inspection well | |
| CN218712567U (en) | Pumping and drainage system for maintenance of hydropower station plunge pool | |
| CN218028035U (en) | Basement construction drainage system | |
| CN217758549U (en) | Prefabricated cast-in-place concrete toe wall that combines | |
| CN216195231U (en) | Embedded drainage system of bottom-sealing-free reinforced concrete combined hanging box cofferdam | |
| CN219710364U (en) | Pit-in-pit dewatering system in foundation pit | |
| CN220035481U (en) | Recoverable reuse combined type drainage system of building foundation ditch | |
| CN217352124U (en) | Drainage structure of bridge culvert and roadbed connecting section |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |