Foundation pit drainage diversion channel system

Abstract

This utility model relates to a foundation pit drainage diversion channel system, including a confluence channel and a branch channel set on the upper part of the pit wall on one side of the foundation pit. The confluence channel and the branch channel are connected by a branch pipe. The drainage pipe for accumulated water inside the foundation pit extends into the confluence channel and the branch channel respectively. A drainage outlet is provided at the bottom of the confluence channel, and the drainage outlet is connected to the municipal sewage pipe through the confluence pipe. By setting the branch channel and the confluence channel on the upper part of the foundation pit to form a foundation pit drainage diversion channel system, the system can receive and collect the accumulated water in the foundation pit at multiple points, so that the accumulated water can enter the municipal sewage pipe uniformly from a single confluence pipe. This avoids the phenomenon of complex and messy layout of drainage pipes on the road surface at the construction site, and prevents them from being crushed and damaged by construction vehicles, thus ensuring construction safety and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of building engineering, and in particular to a foundation pit drainage diversion channel system. Background Technology

[0002] Water accumulation is generated during foundation pit construction. The sources of this water include: when excavation reaches below the groundwater level, or when there are gaps in the retaining structure or water-stop curtain, groundwater from outside the pit can seep into the pit through soil pores, cracks, or structural defects; rainwater or snowmelt can enter the foundation pit through surface runoff, especially in open-pit foundation pits; and water generated during construction, such as soil moisture seepage during earthwork excavation, water used for concrete curing, and water used for washing machinery and equipment. The accumulated water must be drained in a timely manner to avoid affecting construction safety and efficiency. The utility model patent with application number CN2018110641039 proposes a deep foundation pit drainage system. This drainage system uses water pumps connected to pipes to directly discharge the water collected in the drainage wells into the municipal sewage network outside the foundation pit. However, large foundation pits have many water accumulation points, requiring multiple water pumps and multiple drainage pipes to be arranged in parallel to connect to the municipal drainage network. The drainage pipes usually need to cross the construction road surface above the foundation pit to enter the external network, resulting in complex and chaotic pipelines at the construction site, which are easily damaged by construction vehicles. This system needs to be improved. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a foundation pit drainage diversion channel system.

[0004] The technical solution of this utility model is: a foundation pit drainage diversion channel system, including a confluence channel and a branch channel set on the upper part of the pit wall on one side of the foundation pit. The confluence channel and the branch channel are arranged side by side in a straight line and are connected by a branch pipe. The branch pipe connects the confluence channel and the branch channel in series. The water drainage pipe inside the foundation pit extends into the confluence channel and the branch channel respectively. A drainage outlet is provided at the bottom of the confluence channel, and the drainage outlet is connected to the municipal sewage pipe through the confluence pipe. The confluence pipe is a corrosion-resistant corrugated pipe.

[0005] Preferably, the tributary channel is a square concrete trough. The tributary channel is built on the ground surface, and the tributary pipe is connected to the middle of the side wall of the tributary channel. The sealing of the connection should be ensured, and the tributary pipe and the bottom of the tributary channel form a height difference d1.

[0006] Preferably, the confluence channel is a square concrete trough. The surface of the confluence channel is masonry. Two overflow plates are arranged side by side in the middle of the confluence channel. The overflow plates are made of concrete masonry. A sedimentation tank is formed between the overflow plates and the side wall of the trough. The two sedimentation tanks are the same size. An overflow channel is formed between the two overflow plates. The drain outlet is connected to the overflow channel. A height difference d2 is formed between the upper end of the overflow plate and the branch pipe. A height difference d3 is formed between the bottom of the sedimentation tank and the branch pipe.

[0007] Preferably, the bottom of the overflow trough is provided with a trapezoidal groove, which is located in the middle of the overflow trough, and the drain outlet corresponds to the trapezoidal groove.

[0008] Preferably, both the confluence channel and the tributary channel are provided with overflow holes on the upper part of their sidewalls. The overflow holes are square holes that cover as much of the length of the sidewall as possible and are located on one side of the pit wall.

[0009] Preferably, the branch pipe is a rubber corrugated pipe, with multiple supports evenly provided in the middle of the rubber corrugated pipe to keep it in a horizontal state.

[0010] Preferably, one confluence channel is provided, and multiple branch channels are provided, which are evenly distributed on both sides with the confluence channel as the center. The size of the confluence channel is larger than the size of the branch channels.

[0011] The beneficial technical effects of this utility model are: This utility model forms a foundation pit drainage diversion channel system by setting up tributary channels and confluence channels on the upper part of the foundation pit. The system receives and collects the water in the foundation pit at multiple points, so that the water can enter the municipal sewage pipe through a single confluence pipe. This avoids the phenomenon of complex and chaotic layout of drainage pipes on the road surface at the construction site, and prevents them from being crushed and damaged by construction vehicles, thus ensuring construction safety and efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 yes Figure 1 A schematic diagram of the AA-direction cross-section structure; Figure 3 yes Figure 1 Schematic diagram of the BB-direction cross-section structure; Figure 4 This is a three-dimensional structural diagram of the confluence channel.

[0013] In the diagram, 1. Pit wall, 2. Converging channel, 21. Overflow plate, 22. Sedimentation tank, 23. Overflow channel, 24. Trapezoidal channel, 3. Branch channel, 4. Branch pipe, 5. Converging pipe, 6. Water drainage pipe, 7. Municipal sewage pipe, 81. Overflow hole. Detailed Implementation

[0014] Example 1, see appendix Figure 1 A foundation pit drainage diversion channel system includes a confluence channel 2 and a branch channel 3 located on the upper part of the pit wall 1 on one side of the foundation pit. The confluence channel 2 and the branch channel 3 are arranged on one side of the construction access road and are equipped with guardrails on their outer sides. The confluence channel 2 and the branch channel 3 are connected by a branch pipe 4, which is a rubber corrugated pipe. Its expansion function facilitates the connection between the channels. The water accumulation drainage pipe 6 inside the foundation pit extends into the confluence channel 2 and the branch channel 3 respectively. The lower end of the water accumulation drainage pipe 6 extends into the water collection well, and the upper end is fixedly connected to the channel by a lock or wire binding to ensure drainage stability. A drainage outlet is provided at the bottom of the confluence channel 2. The drainage outlet is connected to the municipal sewage pipe 7 through a confluence pipe 5. The confluence pipe 5 is buried inside the construction road surface, crosses the construction road, and then connects to the municipal sewage pipe 7.

[0015] Both the confluence channel 2 and the branch channel 3 are equipped with overflow holes 81 on the upper side wall. The overflow holes 81 are located on one side of the pit wall 1. The water in the pit is usually accompanied by sediment such as mud and sand. If the confluence channel 2 and the branch channel 3 become blocked during the drainage process, the water will be discharged from the overflow holes 81 and flow back into the pit along the pit wall 1. After clearing the blockage, the water can be discharged again to avoid water overflowing onto the road surface.

[0016] One confluence channel 2 is set up, and multiple branch channels 3 are set up, which are evenly distributed on both sides with the confluence channel 2 as the center. The number of branch channels 3 is arranged according to the scale of the foundation pit. Only one confluence channel 2 is set up, and they are connected to each other in series.

[0017] Example 2, see appendix Figure 2-4 This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that the branch channel 3 is a square concrete trough, and the branch pipe 4 is connected to the middle of the side wall of the branch channel 3. The branch pipe 4 and the bottom of the branch channel 3 form a height difference d1. This height difference d1 creates a sedimentation space at the bottom of the branch channel 3. After the water in the pit enters the branch channel 3, the large particles of silt inside the water will sink into the sedimentation space, preventing large particles of silt from entering the branch pipe 4 and the confluence channel 2.

[0018] The confluence channel 2 is a square concrete tank. Two overflow plates 21 are arranged side-by-side in the middle of the confluence channel 2. A sedimentation tank 22 is formed between the overflow plates 21 and the sidewall of the tank. An overflow trough 23 is formed between the two overflow plates 21. The drain outlet is connected to the overflow trough 23. A height difference d2 is formed between the upper end of the overflow plates 21 and the branch pipe 4, and a height difference d3 is formed between the bottom of the sedimentation tank 22 and the branch pipe 4. After primary sedimentation, the accumulated water enters the overflow trough 23 of the confluence channel 2 from the branch pipe 4 for secondary sedimentation. Smaller particles of silt in the accumulated water settle into the sedimentation tank 22, while the precipitated water enters the overflow trough 23 from the upper end of the overflow plates 21 and then enters the confluence pipe 5 from the overflow trough 23, and finally enters the municipal sewage pipe 7, from which it is discharged from the municipal sewage system.

[0019] The bottom of the overflow trough 23 is provided with a trapezoidal trough 24, and the drain outlet corresponds to the trapezoidal trough 24. After the secondary sedimentation, the water enters the overflow trough 23 and flows through the stepped area around the trapezoidal trough 24. The remaining silt will stay in the stepped area, forming a tertiary filtration, so that most of the silt in the water is filtered out, preventing the water carrying silt from entering the municipal sewage system and causing blockage.

Claims

1. A foundation pit drainage diversion channel system, characterized in that: It includes a confluence channel and a tributary channel located on the upper part of the pit wall on one side of the foundation pit. The confluence channel and the tributary channel are connected by a tributary pipe. The drainage pipe for accumulated water inside the foundation pit extends into the confluence channel and the tributary channel respectively. A drainage outlet is provided at the bottom of the confluence channel, and the drainage outlet is connected to the municipal sewage pipe through the confluence pipe.

2. The foundation pit drainage diversion channel system according to claim 1, characterized in that: The tributary channel is a square concrete trough, and the tributary pipe is connected to the middle of the side wall of the tributary channel. The tributary pipe and the bottom of the tributary channel form a height difference d1.

3. The foundation pit drainage diversion channel system according to claim 1, characterized in that: The confluence channel is a square concrete trough. Two overflow plates are arranged side by side in the middle of the confluence channel. A sedimentation tank is formed between the overflow plates and the side wall of the trough. An overflow channel is formed between the two overflow plates. The drain outlet is connected to the overflow channel. A height difference d2 is formed between the upper end of the overflow plate and the branch pipe. A height difference d3 is formed between the bottom of the sedimentation tank and the branch pipe.

4. The foundation pit drainage diversion channel system according to claim 3, characterized in that: The bottom of the overflow trough is provided with a trapezoidal groove, and the drain outlet corresponds to the trapezoidal groove.

5. The foundation pit drainage diversion channel system according to claim 1, characterized in that: Both the confluence channel and the tributary channel have overflow holes on the upper part of their side walls, which are located on one side of the pit wall.

6. The foundation pit drainage diversion channel system according to claim 1, characterized in that: The aforementioned branch pipe is a rubber corrugated pipe.

7. The foundation pit drainage diversion channel system according to claim 1, characterized in that: One confluence channel is provided, and multiple tributary channels are provided, which are evenly distributed to both sides with the confluence channel as the center.

Images