Building foundation pit slope crest drainage and water collection system

Abstract

The utility model relates to the technical field of building foundation pit construction, and particularly discloses a building foundation pit slope crest drainage and water collection system which comprises a transition water tank, a drainage connecting pipeline and a water storage tank. The transition water tanks are arranged on the peripheral edge of the slope crest of a foundation pit at intervals, dewatering wells in the foundation pit are connected with the corresponding transition water tanks through drainage hoses, and driving force is provided by a water pump. The adjacent transition water tanks are connected through drainage connecting pipelines; and one transition water tank close to the water storage tank in one group of transition water tanks is communicated with the water storage tank. The water collecting system does not need to carry out earth cutting construction on the periphery of the foundation pit, can be directly assembled on site, and is high in construction speed and low in installation cost.

Description

Technical Field

[0001] The utility model relates to the technical field of building foundation pit construction, in particular to a drainage and water collection system on the slope top of a building foundation pit. Background Art

[0002] Nowadays, basements are commonly installed in house construction and municipal engineering projects, so foundation pit projects are increasingly appearing on construction sites. The safety of the foundation pit is very important for foundation engineering. Especially in the rainy season, a large amount of rain in a short period of time will cause water accumulation in the foundation pit, thus affecting the progress of the project. Poor drainage of the foundation pit may even cause the foundation pit to collapse, resulting in safety accidents. Therefore, it is necessary to set up a drainage system on the top of the foundation pit slope.

[0003] The foundation pit top drainage system is an integral part of the foundation pit project, among which brick-built drainage ditches and cast-in-place drainage ditches are currently widely used in the market. The problem with brick-built drainage ditches is that the workload of on-site masonry is large, and the formed drainage ditches are prone to cracking and leakage due to uneven settlement of the bottom of the ditch, and the maintenance cost is high. The problem with cast-in-place drainage ditches is that the labor input for on-site production is large, the construction period is long, and the construction cost is high.

[0004] In addition, the water in the ground drainage system on the top of the foundation pit is currently directly connected to the municipal sewage network, which cannot effectively reuse water resources, resulting in a waste of water resources; at the same time, it increases the drainage burden of the municipal network.

[0005] Therefore, the utility model provides a drainage and water collection system for the slope top of a building foundation pit. Utility Model Content

[0006] The utility model aims to solve the deficiencies of the above-mentioned background technology and provide a drainage and water collection system for the top of a building foundation pit slope. The system has fast construction speed, the drainage pipe is not easy to crack, the drainage system materials can be recycled, and the use cost is reduced.

[0007] The technical solution of the utility model is as follows:

[0008] A drainage and water collection system for the top of a building foundation pit, comprising a transition water tank, a drainage connecting pipe and a water storage tank;

[0009] A group of transition water tanks are arranged at intervals on the four sides of the foundation pit slope top, and the precipitation wells inside the foundation pit are connected to the corresponding transition water tanks through drainage hoses, and the driving force is provided by a water pump;

[0010] The adjacent transition water tanks are connected via drainage connecting pipes. The drainage connecting pipes should not be set too long, and are generally set to a maximum of 18 meters for easy maintenance.

[0011] A transition water tank in a group of transition water tanks close to the water storage tank is connected to the water storage tank, so that water in the transition water tank is transferred to the water storage tank for supplying water for construction site.

[0012] Furthermore, a sedimentation tank is provided between the transition water tank and the water storage tank, the transition water tank and the sedimentation tank are connected, a driving force is provided by a lifting pump, and the top of the sedimentation tank is connected to the water storage tank through a drainage pipe (no power is required here).

[0013] Furthermore, a supporting structure is provided on the top of the foundation pit slope below the drainage connecting pipe for positioning and supporting the drainage connecting pipe; the supporting structure is a brick structure.

[0014] Furthermore, the transition water tank is an open box body; it includes four side panels and a bottom plate, and two opposite side panels among the four side panels are provided with drainage interfaces for connecting to the drainage connecting pipe.

[0015] Furthermore, the drainage connection pipe is connected to the transition water tank via a quick-connect flange joint, which facilitates system recycling and reuse.

[0016] Furthermore, the precipitation well is connected to a transition water tank closest thereto through a drainage hose.

[0017] Furthermore, the sedimentation tank adopts a three-stage sedimentation tank, which is composed of three independent sedimentation tanks connected by connecting pipes, and is divided into a first sedimentation tank, a second sedimentation tank, and a third sedimentation tank.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1) The system is welded or spliced ​​by steel and can be used for foundation pit drainage and water collection. There is no need to excavate around the foundation pit. It can be assembled directly on site with fast construction speed and low installation cost.

[0020] 2) The main material of the system is steel. The tensile properties of steel enable the system to resist some of the destructive effects of foundation settlement.

[0021] 3) The system is reusable and can be recycled after use and reused in other projects, reducing construction waste and lowering usage costs, which is in line with the concept of green construction.

[0022] 4) The water storage tank of the system can provide water for construction site, reducing the water demand of the site’s tap water network and achieving water conservation to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall arrangement structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the connection between the transition water tank and the drainage connection pipe of the utility model;

[0025] Figure 3 This is a schematic diagram of the connection between the transition water tank and the sedimentation tank of the utility model;

[0026] Figure 4 This is a schematic diagram of the connection between the sedimentation tank and the water storage tank of the utility model;

[0027] In the figure: 1. Transition water tank; 2. Drainage connecting pipe; 3. Precipitation well; 4. Drainage hose; 5. Lifting pump; 6. Sedimentation tank; 7. Water storage tank; 8. Drainage pipe; 9. Support structure. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings of the specification.

[0029] like Figure 1 As shown, a drainage and water collection system for the top of a construction foundation pit is used to discharge the water in the precipitation well 3 in the foundation pit, and collect and store it for reuse.

[0030] A drainage and water collection system for the top of a building foundation pit comprises a transition water tank 1, a drainage connecting pipe 2, a drainage hose 4, a sedimentation tank 6, a water storage tank 7, and a drainage pipe 8;

[0031] The transition water tank 1 is in the shape of a rectangular parallelepiped, and the commonly used specifications are length×width×height 750mm×mm750×500mm. The transition water tank 1 is arranged at the four edges of the top of the foundation pit slope, and a plurality of transition water tanks 1 are arranged at a certain distance.

[0032] The drainage connection pipe 2 is in the shape of a round pipe, and the commonly used specifications are 200mm, 225mm, 250mm, 275mm, and 300mm. Both ends of the drainage connection pipe 2 are connected to the drainage interface of the transition water tank 1 through quick-connect flange joints (or welding).

[0033] The flow of water between the transition water tanks 1 can be powered by the water head difference between the transition water tanks 1; during construction, find a highest point and a lowest point on the top of the foundation pit slope (or set the highest point with bricks), and the transition water tanks 1 can be set in sequence from the highest point to the lowest point, and the transition water tank 1 at the lowest point is close to the sedimentation tank 6.

[0034] The drainage connection pipe 2 should not be set too long, and is generally set to a maximum of 18 meters for easy maintenance. In other words, the distance between the transition water tanks 1 is controlled within 18 meters.

[0035] Brick support structures are respectively arranged near the transition water collection well and in the middle of the drainage connecting pipe 2, and are evenly arranged within 5 meters to reduce deformation of the drainage pipe.

[0036] The sedimentation tank 6 is composed of three independent sedimentation tanks connected by connecting pipes, which are divided into a first sedimentation tank, a second sedimentation tank, and a third sedimentation tank. The common specifications of the first sedimentation tank and the second sedimentation tank are length×width×height 3000mm×1500mm×1500mm, and the common specifications of the third sedimentation tank are length×width×height 2000mm×1500mm×1500mm.

[0037] A lifting pump 5 is arranged between a transition water tank 1 near the sedimentation tank 6 and the sedimentation tank 6 to pump the water in the transition water tank 1 into the sedimentation tank 6 for sedimentation; several transition water tanks 1 are connected by drainage connecting pipes to form a communicating vessel, so it is only necessary to arrange a lifting pump 5 between a transition water tank 1 near the sedimentation tank 6 and the sedimentation tank 6 to realize the water discharge of the entire drainage system.

[0038] The water storage tank 7 is composed of three independent water storage tanks connected by connecting pipes, and the common specifications are length×width×height 3000mm×2000mm×1500mm. The top of the sedimentation tank 6 is connected to the water storage tank 7 through a drainage pipe, which improves the cleanliness of the water in the water storage tank and facilitates the use of water for the site spraying system.

[0039] The transition water tank 1, the tertiary sedimentation tank 6, and the water storage tank 7 are all made of welded steel plates; the upper parts of the two opposite sides of the transition water tank 1, the tertiary sedimentation tank 6, and the water storage tank 7 are provided with lifting rings for easy lifting.

[0040] Note: The foundations of the transition water tank 1, the tertiary sedimentation tank 6, and the water storage tank 7 need to meet the bearing capacity when they are full of water to reduce the possibility of cracking caused by uneven settlement.

[0041] Construction process:

[0042] Material preparation: According to the scope of the foundation pit, prepare a water storage tank 7, a sedimentation tank 6, a drainage connecting pipe 2 of designed length, a transition water tank 1 of designed number, and an appropriate amount of bricks.

[0043] Positioning and laying out: Arrange the positions of transition water tank 1, sedimentation tank 6 and water storage tank 7 on the foundation pit plan, and lay out and position them.

[0044] Lifting materials: according to the positioning and laying out, lift the transition water tank 1, sedimentation tank 6 and water storage tank 7 to the designated positions.

[0045] Elevation adjustment: Starting from the outlet of the highest transition water tank 1, gradually lower the elevation of the water inlet and outlet of the subsequent transition water tank 1. (Note: The highest transition water tank 1 can have multiple outlets, usually 2 outlets)

[0046] Connection system: by welding, the transition water tank 1 is connected to the transition water tank 1, the transition water tank 1 is connected to the sedimentation tank 6, and the sedimentation tank 6 is connected to the water storage tank 7 by pipes;

[0047] Water resource utilization: The water in the final water storage tank 7 can be reasonably utilized as water resources for this project.

[0048] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.

Claims

1. A drainage and water collection system for the top of a building foundation pit, characterized in that: The invention comprises a transition water tank (1), a drainage connection pipe (2) and a water storage tank (7); a group of the transition water tanks (1) are arranged at intervals on the edges of the four sides of the top of the foundation pit slope; the precipitation wells (3) inside the foundation pit are respectively connected to the corresponding transition water tanks (1) through drainage hoses (4), and a water pump provides driving force; adjacent transition water tanks (1) are connected through drainage connection pipes (2); a transition water tank (1) close to the water storage tank (7) in the group of the transition water tanks (1) is connected to the water storage tank (7), so that water in the precipitation well (3) is transferred from the transition water tank (1) to the water storage tank (7) for supplying water to the construction site.

2. A construction foundation pit slope top drainage and water collection system according to claim 1, characterized in that: A sedimentation tank (6) is provided between the transition water tank (1) and the water storage tank (7); the transition water tank (1) and the sedimentation tank (6) are connected, and a driving force is provided by a lifting pump (5); the top of the sedimentation tank (6) is connected to the water storage tank (7) via a drainage pipe (8).

3. A construction foundation pit slope top drainage and water collection system according to claim 1, characterized in that: A support structure (9) is provided below the drainage connection pipe (2) and is used for positioning and supporting the drainage connection pipe (2).

4. A construction foundation pit slope top drainage and water collection system according to claim 1, characterized in that: The transition water tank (1) comprises four side plates and a bottom plate, and two opposite side plates of the four side plates are provided with drainage interfaces for connecting to a drainage connection pipe (2).

5. A construction foundation pit slope top drainage and water collection system according to claim 1, characterized in that: The drainage connection pipe (2) and the transition water tank (1) are connected via a quick-connect flange joint.

6. A construction foundation pit slope top drainage and water collection system according to claim 1, characterized in that: The precipitation well (3) is connected to a transition water tank (1) closest thereto via a drainage hose (4).

7. A construction foundation pit slope top drainage and water collection system according to claim 2, characterized in that: The sedimentation tank (6) adopts a three-stage sedimentation tank.

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