A pressure equalization safety system for a plurality of sump units in a basement

Abstract

The utility model belongs to underground engineering construction technical field, concretely relates to a basement multiple water collecting unit's pressure equalizing safety system. Water collecting unit includes water collecting well, filter well and horizontal water guide pipe, water collecting well sets up in concrete protective layer, and correspondingly is arranged with recessed portion, filter well sets up in the soil below concrete cushion, and correspondingly is arranged with horizontal portion, the top opening of filter well is adjacent with the concrete cushion below the horizontal portion of concrete bottom plate, water collecting well is located in one side of filter well, and is linked through horizontal water guide pipe, the bottom wall of water collecting well is lower than the bottom wall of filter well, water collecting unit is provided with a plurality of two two distance, and the filter well of two adjacent water collecting units is linked through horizontal setting water -permeable blind pipe, and the horizontal water guide pipe of two adjacent groups of water collecting units is linked through horizontal setting circulation pressure equalizing common pipe. Avoid one or more water collecting units failure when causing anti -floating accident.

Description

Technical Field

[0001] This utility model belongs to the field of underground engineering construction technology, specifically relating to a pressure equalization safety system for multiple water collection units in a basement. Background Technology

[0002] When the buoyancy force exerted by groundwater on a building exceeds the downward pressure on the building, the building will experience a buoyancy failure. For buildings in areas with highly permeable strata, such as areas with abundant groundwater, buoyancy prevention measures typically involve anti-buoyancy anchors or piles. However, in areas with impermeable or weakly permeable strata, groundwater is generally underdeveloped. After backfilling and covering the foundation pit, a small amount of surface water seeps down the pit and cannot drain, causing the groundwater level within the building area to gradually rise, even reaching the outdoor ground level, exhibiting a "water basin effect." Economical buoyancy prevention measures generally employ drainage and pressure relief methods to lower the groundwater level below the maximum design level.

[0003] The implementation cases of the "Technical Standard for Drainage, Pressure Relief and Anti-buoyancy of Basements in Impermeable Soil Layers in Sichuan Province" (DBJ51 / T140-2020) have certain shortcomings. Specifically, the sump wells in some water collection units operate at a high frequency, while those in others operate at a very low frequency. This leads to the overuse of sump well resources in some water collection units and excessive idleness in others.

[0004] Existing groundwater collection and drainage systems consist of multiple original collection units arranged in pairs, such as Figure 1 As shown, the original water collection unit 3 includes an original water collection well 301 and an original water filter well 302 arranged adjacent to each other. The concrete base slab 2 includes a recessed portion, and a horizontal portion connected to its own sidewall is provided on the outer side of the upper end of the recessed portion. The recessed portion of the concrete base slab 2 serves as the original water collection well 301. The concrete protective layer 1 is provided adjacent to the upper part of the horizontal portion of the concrete base slab 2, and the concrete cushion layer 14 is provided adjacent to the lower part of the concrete base slab 2. The original water filter well 302 is provided adjacent to the lower part of the concrete cushion layer 14 and is arranged correspondingly to the bottom of the original water collection well 301. The original filter well 302 is equipped with original filter material 303. The original collection well 301 and the original filter well 302 are connected by a vertical water pipe 304. The lower end of the vertical water pipe 304 is located in the original filter material 303. The corresponding section of the vertical water pipe 304 and the original filter material 303 have through holes. The upper end of the vertical water pipe 304 is equipped with the original overflow valve 305 located in the original collection well 301. The original filter wells 302 in two adjacent original collection units 3 are connected by a horizontal trench.

[0005] Existing groundwater collection and drainage systems have the following technical problems: First, since the original filter well 302 is located below the original collection well 301, it has the disadvantages of inconvenience and difficulty in construction.

[0006] Second, when the concrete cushion layer 14 is poured on top of the foundation bearing layer and the concrete is vibrated, cement slurry will enter the horizontal trench through the gaps, causing the horizontal trench to become blocked. As a result, during the subsequent water collection process, the original filter wells 302 of multiple original water collection units 3 cannot be connected through the horizontal trench, causing one or more original water collection units 3 to fail, while the remaining original water collection units 3 operate under overload. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a pressure equalization safety system for multiple water collection units in a basement, so as to avoid buoyancy accidents caused by the failure of one or more water collection units.

[0008] The technical solution adopted by this utility model to solve its technical problem is: a pressure equalization safety system for multiple water collection units in a basement, including a concrete protective layer, a concrete base slab, a concrete cushion layer and water collection units; The concrete protective layer, concrete base slab, and concrete cushion layer are arranged adjacent to each other from top to bottom; the concrete base slab includes a recessed portion, and a horizontal portion connected to its own sidewall is provided on the outer side of the upper end of the recessed portion. The water collection unit includes a water collection well, a water filter well, and a horizontal water guide pipe. The water collection well is located within the concrete protective layer and is arranged corresponding to the recessed portion. The water filter well is located in the soil below the concrete cushion layer and is arranged corresponding to the horizontal portion. The top opening of the water filter well is adjacent to the concrete cushion layer below the horizontal portion of the concrete base slab. The water collection well is located on one side of the water filter well and is connected to it via the horizontal water guide pipe. The bottom wall of the water collection well is lower than the bottom wall of the water filter well. The water collection units are arranged in pairs at intervals, and the filter wells of two adjacent water collection units are connected by horizontally arranged permeable blind pipes; the horizontal water guide pipes of two adjacent groups of water collection units are connected by horizontally arranged circulating pressure equalization pipes.

[0009] Furthermore, the water collection unit also includes a vertical water outlet pipe connected to the horizontal water guide pipe; The lower end of the vertical water outlet pipe is connected to the end of the horizontal water guide pipe that extends into the water collection well, and an overflow valve located inside the water collection well is installed at the upper end of the vertical water outlet pipe.

[0010] Furthermore, an on / off control valve located below the overflow valve is also installed on the vertical water outlet pipe.

[0011] Furthermore, the section of the horizontal water guide pipe that extends into the filter well has several through holes.

[0012] Furthermore, the through hole is an elongated hole.

[0013] Furthermore, it also includes a first filter layer, a second filter layer, and a third filter layer; The horizontal section of the concrete base slab, the concrete cushion layer, the first filter layer, the second filter layer, and the third filter layer are arranged sequentially from top to bottom; The first filter layer is located outside the water filter well and covers the top opening of the water filter well; the second filter layer and the third filter layer are located inside the water filter well and are spaced apart. The section of the horizontal water guide pipe that extends into the water filter well is located in the gap between the second and third filter layers.

[0014] Furthermore, geotextile layers are provided between the concrete cushion layer and the first filter layer, between the first filter layer and the second filter layer, and on the inner wall of the filter well.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: This utility model provides a pressure-equalizing safety system for multiple water collection units in a basement, avoiding buoyancy accidents caused by the failure of one or more water collection units. It enables all water collection units to be interconnected and water pressure to be evenly distributed. It ensures that each water collection unit can drain water and relieve pressure, lowering the groundwater level and keeping the building in a safe, buoyancy-resistant state. It also significantly increases the system's external drainage capacity, improving the system's safety and reliability. Furthermore, it offers advantages such as convenient construction and low project cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the original water collection unit in the background technology; Figure 2 This is a schematic diagram of the planar structure of this utility model; Figure 3 This is a schematic diagram showing the positional relationship of the concrete protective layer, concrete base slab, concrete cushion layer, water collection well, water filter well, horizontal water guide pipe, vertical water outlet pipe, overflow valve, and on / off control valve in this utility model. Figure 4 This is a schematic diagram showing the positional relationship between the concrete base slab, concrete cushion layer, first filter layer, second filter layer, third filter layer, geotextile layer, filter well, and horizontal water pipe in this utility model. Figure label: 1-Concrete protective layer; 2-Concrete base slab; 3-Original water collection unit; 301-Original water collection well; 302-Original water filter well; 303-Original filter material; 304-Vertical water guide pipe; 305-Original overflow valve; 4-Water collection unit; 401-Water collection well; 402-Water filter well; 403-Horizontal water guide pipe; 5-Vertical water outlet pipe; 6-Circulation pressure equalization pipe; 7-Permeable blind pipe; 8-Overflow valve; 9-On / off control valve; 10-First filter layer; 11-Second filter layer; 12-Third filter layer; 13-Geotextile layer; 14-Concrete cushion layer. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] A pressure equalization safety system for multiple water collection units in a basement includes a concrete protective layer 1, a concrete base slab 2, a concrete cushion layer 14, and water collection units 4; the concrete protective layer 1, the concrete base slab 2, and the concrete cushion layer 14 are arranged adjacent to each other from top to bottom; the concrete base slab 2 includes a recessed portion, and a horizontal portion connected to its own sidewall is provided on the outer side of the upper end of the recessed portion; the water collection unit 4 includes a water collection well 401, a water filter well 402, and a horizontal water guide pipe 403; the water collection well 401 is disposed in the concrete protective layer 1 and is arranged correspondingly to the recessed portion, and the water filter well 402 is disposed in the concrete cushion layer. The filter well 402 is located in the soil below the 14 and is arranged corresponding to the horizontal part; the top opening of the filter well 402 is adjacent to the concrete cushion layer 14 below the horizontal part of the concrete base slab 2; the collection well 401 is located on one side of the filter well 402 and is connected by a horizontal water guide pipe 403; the bottom wall of the collection well 401 is lower than the bottom wall of the filter well 402; multiple collection units 4 are arranged in pairs, and the filter wells 402 of two adjacent collection units 4 are connected by a horizontally arranged permeable blind pipe 7; the horizontal water guide pipes 403 of two adjacent sets of collection units 4 are connected by a horizontally arranged circulating pressure equalization pipe 6.

[0019] Groundwater tends to accumulate beneath the concrete cushion layer 14 adjacent to the horizontal portion of the concrete base slab 2, leading to a "water basin effect." One end of the horizontal water conduit 403 extends into the filter well 402 through a through-hole on its sidewall, and the other end extends into the collection well 401 through a through-hole on its sidewall. The end of the horizontal water conduit 403 within the filter well 402 is spaced from the opposite sidewall of the filter well 402. The end of the horizontal water conduit 403 within the collection well 401 is also spaced from the opposite sidewall of the collection well 401. Groundwater in the soil beneath the concrete cushion layer 14 adjacent to the horizontal portion of the concrete base slab 2 enters the filter well 402 through the porous wall of the permeable blind pipe 7 and the top opening of the filter well 402. The permeable blind pipe 7 allows groundwater from one filter well 402 to flow into an adjacent filter well 402. The groundwater in filter well 402 then flows through the horizontal water guide pipe 403 into a collection well 401, where it is pumped out. When the permeable blind pipe 7 becomes blocked, the groundwater in filter well 402 can still flow into other collection wells 401 via the circulating pressure equalization pipe 6. Through the combined action of the permeable blind pipe 7 and the circulating pressure equalization pipe 6, groundwater can be collected in the collection wells 401 of each collection unit 4, achieving pressure equalization and collaborative operation (referred to as "collaboration") in each collection unit 4. This prevents buoyancy accidents caused by the failure of one or more collection units 4, ensuring safety.

[0020] The permeable blind pipe 7 is an existing technology. The pipe wall of the permeable blind pipe 7 has a porous structure, allowing groundwater in the soil to enter the internal channels of the permeable blind pipe 7 through its pipe wall, thus diverting and collecting as much groundwater as possible. When the concrete foundation 14 is poured and vibrated, the porous structure of the permeable blind pipe 7 also prevents some concrete debris from falling onto it and clogging it completely.

[0021] The horizontal water guide pipe 403 and the circulating pressure equalizing pipe 6 can be made of metal. Preferably, both the horizontal water guide pipe 403 and the circulating pressure equalizing pipe 6 are made of PVC.

[0022] Preferably, the water collection unit 4 further includes a vertical outlet pipe 5 connected to the horizontal water guide pipe 403; the lower end of the vertical outlet pipe 5 is connected to the end of the horizontal water guide pipe 403 that extends into the water collection well 401, and an overflow valve 8 located inside the water collection well 401 is installed at the upper end of the vertical outlet pipe 5. The overflow valve 8 is prior art. Groundwater flows into the water collection well 401 through the horizontal water guide pipe 403, the vertical outlet pipe 5, and the overflow valve 8. The vertical outlet pipe 5 is connected to the horizontal water guide pipe 403 by an elbow to form an L-shaped structure. The elbow is located inside the water collection well 401. Preferably, the overflow valve 8 is located near the top opening of the water collection well 401.

[0023] Preferably, an on / off control valve 9 is also installed on the vertical water outlet pipe 5, located below the overflow valve 8. The on / off control valve 9 controls the opening and closing of the vertical water outlet pipe 5, which is existing technology. The on / off control valve 9 can be a ball valve, butterfly valve, etc. When the groundwater in the collection well 401 is about to overflow, the on / off control valve 9 is closed to pump out the groundwater in the collection well 401, and then the on / off control valve 9 is opened again.

[0024] Groundwater can enter the horizontal water conduit 403 through the end of the horizontal water conduit 403 located inside the filter well 402. Preferably, the section of the horizontal water conduit 403 extending into the filter well 402 has several through holes. Groundwater can also enter the horizontal water conduit 403 through the through holes.

[0025] The through hole can be a round hole, an elliptical hole, etc., and preferably, the through hole is an elongated hole.

[0026] Preferably, the system further includes a first filter layer 10, a second filter layer 11, and a third filter layer 12; the horizontal portion of the concrete base slab 2, the concrete pad 14, the first filter layer 10, the second filter layer 11, and the third filter layer 12 are arranged sequentially from top to bottom; the first filter layer 10 is located outside the water filter well 402 and covers the top opening of the water filter well 402; the second filter layer 11 and the third filter layer 12 are located inside the water filter well 402 and are spaced apart; the section of the horizontal water guide pipe 403 extending into the water filter well 402 is located in the space between the second filter layer 11 and the third filter layer 12. The first filter layer 10, the second filter layer 11, and the third filter layer 12 all include filter material and a filter screen covering the filter material. The filter material can be gravel, ceramic balls, etc.

[0027] Preferably, geotextile layers 13 are provided between the concrete cushion layer 14 and the first filter layer 10, between the first filter layer 10 and the second filter layer 11, and on the inner wall of the filter well 402. By providing geotextile layers 13, the filtration effect on groundwater is further improved.

[0028] The specific embodiments described are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. All equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A pressure equalization safety system for multiple water collection units in a basement, characterized in that: It includes a concrete protective layer (1), a concrete base slab (2), a concrete cushion layer (14), and a water collection unit (4). The concrete protective layer (1), the concrete base slab (2) and the concrete cushion layer (14) are arranged adjacent to each other from top to bottom; the concrete base slab (2) includes a recessed portion, and a horizontal portion connected to its own sidewall is provided on the outer side of the upper end of the recessed portion. The water collection unit (4) includes a water collection well (401), a water filter well (402), and a horizontal water guide pipe (403); the water collection well (401) is located in the concrete protective layer (1) and is arranged corresponding to the recessed part; the water filter well (402) is located in the soil below the concrete cushion layer (14) and is arranged corresponding to the horizontal part; the top opening of the water filter well (402) is adjacent to the concrete cushion layer (14) below the horizontal part of the concrete base plate (2); the water collection well (401) is located on one side of the water filter well (402) and is connected to it through the horizontal water guide pipe (403); the bottom wall of the water collection well (401) is lower than the bottom wall of the water filter well (402); The water collection units (4) are arranged in pairs, and the filter wells (402) of two adjacent water collection units (4) are connected by a horizontally arranged permeable blind pipe (7); the horizontal water guide pipes (403) of two adjacent sets of water collection units (4) are connected by a horizontally arranged circulating pressure equalization pipe (6).

2. The pressure equalization safety system for multiple water collection units in a basement as described in claim 1, characterized in that: The water collection unit (4) also includes a vertical water outlet pipe (5) connected to the horizontal water guide pipe (403). The lower end of the vertical water outlet pipe (5) is connected to the end of the horizontal water guide pipe (403) that extends into the water collection well (401), and the upper end of the vertical water outlet pipe (5) is equipped with an overflow valve (8) located inside the water collection well (401).

3. The pressure equalization safety system for multiple water collection units in a basement as described in claim 2, characterized in that: The vertical water outlet pipe (5) is also equipped with an on / off control valve (9) located below the overflow valve (8).

4. The pressure equalization safety system for multiple water collection units in a basement as described in claim 1, characterized in that: The horizontal water guide pipe (403) has several through holes on the section that extends into the filter well (402).

5. The pressure equalization safety system for multiple water collection units in a basement as described in claim 4, characterized in that: The through hole is an elongated hole.

6. The pressure equalization safety system for multiple water collection units in a basement as described in claim 4, characterized in that: It also includes a first filter layer (10), a second filter layer (11) and a third filter layer (12); The horizontal part of the concrete base plate (2), the concrete cushion layer (14), the first filter layer (10), the second filter layer (11) and the third filter layer (12) are arranged from top to bottom; The first filter layer (10) is located outside the water filter well (402) and covers the top opening of the water filter well (402); the second filter layer (11) and the third filter layer (12) are located inside the water filter well (402) and are spaced apart; The section of the horizontal water pipe (403) that extends into the filter well (402) is located in the gap between the second filter layer (11) and the third filter layer (12).

7. The pressure equalization safety system for multiple water collection units in a basement as described in claim 6, characterized in that: Geotextile layers (13) are provided between the concrete cushion layer (14) and the first filter layer (10), between the first filter layer (10) and the second filter layer (11), and on the inner wall of the water filter well (402).

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