CN217325442U

CN217325442U - Foundation pit shallow drainage system

Info

Publication number: CN217325442U
Application number: CN202221308429.3U
Authority: CN
Inventors: 孙鹏; 张彦平; 祝贺
Original assignee: China 22MCC Group Corp Ltd
Current assignee: China 22MCC Group Corp Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-08-30
Anticipated expiration: 2032-05-30

Abstract

The utility model provides a foundation ditch shallow drainage system relates to drainage technical field. The device comprises a water collecting well, a drainage ditch, inverted filter layers, water collecting pipes, a water pump, a water pumping pipe, a drainage main pipe, a water outlet pipe and a sedimentation tank, wherein the water collecting well is arranged along the inner side pit edge of a foundation pit, the drainage ditch is formed in the bottom of the foundation pit between the adjacent water collecting wells, the inverted filter layers are arranged in the drainage ditch, the water collecting pipes are arranged in the inverted filter layers in a concealed mode, and water filtering holes are formed in the water collecting pipes; the water pump is installed in the sump pit, and the water pump is connected with the one end of drinking-water pipe, and the other end and the drainage trunk union coupling of drinking-water pipe, drainage trunk and the one end of outlet pipe are connected, and the other end and the sedimentation tank of outlet pipe are connected. Adopt the mode that the collector pipe secretly applied in this system, do not have the open drain in the foundation ditch, reduced the interference to the construction, prevent simultaneously that escape canal ditch wall from collapsing or forming the quicksand, precipitation effect is better, has improved precipitation efficiency to reuse of water resource has been realized through setting up the sedimentation tank.

Description

Foundation pit shallow drainage system

Technical Field

The utility model relates to the field of drainage technique, especially, relate to a foundation ditch shallow drainage system.

Background

At present, the traditional construction method for draining the shallow layer of the foundation pit is to collect water and drain the water obviously, a drainage ditch is arranged at the bottom of the foundation pit, and the accumulated water in the foundation pit is drained through the drainage ditch. But set up the escape canal and can influence workman's construction, reduce labor efficiency, and the ditch wall collapses or forms the quicksand easily, leads to precipitation effect poor. The equipment in the traditional method is not easy to install, the construction speed is low, most components cannot be recycled, and manpower and materials are wasted. The direct municipal rainwater pipeline that is gone into as waste water of foundation ditch normal water does not collect the utilization, causes the water waste.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a drainage system for shallow foundation pit to solve the above problems.

Based on the above-mentioned purpose, the utility model provides a foundation ditch shallow drainage system, include: the system comprises a water collecting well, a drainage ditch, an inverted filter layer, a water collecting pipe, a water pump, a water pumping pipe, a drainage main pipe, a water outlet pipe and a sedimentation tank; the water collecting wells are arranged along the inner side pit edge of the foundation pit, drainage ditches are arranged at the bottom of the foundation pit between the adjacent water collecting wells, inverted filter layers are arranged in the drainage ditches, water collecting pipes are arranged in the inverted filter layers in a concealed mode, and water filtering holes are formed in the water collecting pipes; the water pump is installed in the sump pit, and the water pump is connected with the one end of drinking-water pipe, and the other end and the drainage trunk union coupling of drinking-water pipe, drainage trunk and the one end of outlet pipe are connected, and the other end and the sedimentation tank of outlet pipe are connected.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. adopt the structure that the collector pipe secretly applied in this system, do not have the open drain in the foundation ditch, reduced the interference to the construction, prevent simultaneously that escape canal ditch wall from collapsing or forming the quicksand, consequently precipitation effect is better, has improved foundation ditch precipitation efficiency.

2. Water in the foundation pit finally enters a sedimentation tank for sedimentation treatment, and the treated water is collected in a centralized manner and used as engineering construction water, so that the water resource is recycled, the engineering cost is greatly reduced, and energy and water conservation are realized.

3. The material cost that uses in this system is low, and each component can repeatedly have enough to meet the need the utilization, and save material reduces construction cost.

Furthermore, the system also comprises a reverse filtering cloth, and the reverse filtering cloth is wound on the water collecting pipe; prevent sand and stone soil from blocking the water filtering holes on the water collecting pipe and influencing normal drainage.

Furthermore, the water filtering holes are arranged in a quincunx shape; and water in the foundation pit can sufficiently flow into the water collecting pipe.

Furthermore, the system also comprises a support and a protective railing, wherein the support is arranged below the water collecting pipe, and the protective railing is arranged on the ground at one side of the support, which is close to the foundation pit; the water collecting pipe is used for being fixed and is prevented from falling into the foundation pit.

Drawings

Fig. 1 is a schematic view of a foundation pit shallow drainage system provided by an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic view of a water collecting pipe of a foundation pit shallow drainage system provided by an embodiment of the present invention;

fig. 4 is a cross-sectional view taken along line B-B of fig. 1.

Description of the drawings are labeled: 1. a water collecting well; 2. a drainage ditch; 3. a reverse filtering layer; 4. a water collection pipe; 5. a water pump; 6. a water pumping pipe; 7. a drainage main pipe; 8. a water outlet pipe; 9. a sedimentation tank; 10. a filter cloth; 11. a support; 12. a guard rail; 13. a water pump switch box; 14. a gravel filtering layer; 15. a foundation pit; 16. and (5) filtering the water.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the following embodiments.

As shown in fig. 1, the utility model provides a foundation ditch shallow layer drainage system comprises sump pit 1, escape canal 2, anti-filter layer 3, collector pipe 4, water pump 5, drinking-water pipe 6, drainage main pipe 7, outlet pipe 8, sedimentation tank 9, anti-filter cloth 10, support 11 and protection railing 12 etc.. As shown in fig. 2, a drainage ditch 2 is dug in the foundation pit 15, an inverted filter layer 3 is arranged in the drainage ditch 2, and the inverted filter layer 3 is formed by laying sand. Hidden water collecting pipe 4 that applies in the anti-filtering layer 3, there is not the open drain in the foundation ditch 15, has reduced the interference to the construction, prevents simultaneously that 2 ditch walls in escape canal from collapsing or forming the quicksand, therefore the precipitation effect is better, has improved 15 precipitation efficiency in foundation ditch. As shown in fig. 3, the water collecting pipe 4 is provided with water filtering holes 16 arranged in a quincunx shape, for the water in the foundation pit 15 to flow into the water collecting pipe 4. The outer wall of the water collecting pipe 4 is wound with the anti-filtering cloth 10, and the anti-filtering cloth 10 is wound for 2 circles, so that the water filtering holes 16 in the water collecting pipe 4 are prevented from being blocked by sand and stone soil, and normal drainage is prevented from being influenced.

The four corners department all is provided with sump pit 1 in the foundation ditch 15, sets up a sump pit 1 along the limit of the hole limit at a certain distance simultaneously, is provided with a collector pipe 4 between two adjacent sump pits 1, and the both ends of collector pipe 4 are connected to the sump pit 1 of both sides respectively. The water in the pit 15 flows into the water collecting pipe 4 through the water filtering holes 16, and flows into the water collecting well 1 through the water collecting pipe 4. As shown in fig. 4, a water pump 5 is installed in the water collecting well 1, the water pump 5 is connected with one end of a water pumping pipe 6, and the other end of the water pumping pipe 6 is connected with a main drainage pipe 7. The water pump 5 is electrically connected with the water pump switch box 13, and the water pump switch box 13 is arranged on the foundation pit 15, so that an operator can control the switch of the water pump 5, and the drainage in the foundation pit 15 can be controlled. The water flowing into the water collecting well 1 is pumped out to the water pumping pipe 6 through the water pump 5 and flows into the drainage main pipe 7 through the water pumping pipe 6, the drainage main pipe 7 is located on the edge of a pit on the foundation pit 15, and the drainage main pipe 7 is supported and fixed through a support 11 arranged below. The guard rail 12 is installed on the ground on the side of the support 11 close to the foundation pit 15 to prevent the drainage main 7 from falling into the foundation pit 15. One end of the water outlet pipe 8 is connected with the water drainage main pipe 7, and the other end of the water outlet pipe 8 is connected with the sedimentation tank 9. The water in the drainage main pipe 7 is gathered to the water outlet pipe 8, flows into the sedimentation tank 9 through the water outlet pipe 8 for sedimentation treatment, and the water after sedimentation is used for concrete maintenance, on-site watering dust fall, greening water and the like, so that the reutilization of water resources is realized.

When the site operation is carried out, the drainage ditch 2 is arranged in the foundation pit 15 along the edge of the pit, the drainage ditch 2 is arranged outside the basic range of the foundation pit 15, the slope toe of the foundation pit 15 away from the edge of the drainage ditch 2 is not less than 0.3m, and the width of the bottom of the drainage ditch 2 is not less than 0.3 m. Lay grit anti-filtration layer 3 and apply collector pipe 4 secretly in escape canal 2, collector pipe 4 is formed by 150~200 mm's UPVC pipe preparation in, offers the drainage hole 16 that is the plum blossom shape and arranges on collector pipe 4, and the size in drainage hole 16 sets up to 15mm in, and the interval between the adjacent drainage hole 16 sets up to 50 mm. The longitudinal gradient of the drainage ditch 2 and the water collecting pipe 4 is preferably 0.1-0.2%, and the bottom surface of the water collecting pipe 4 is 0.3-0.5 m lower than the bottom or excavation surface of the foundation pit 15. The four end corners are respectively provided with a water collecting well 1, the water collecting well 1 is made of DN700 double-wall corrugated pipes, the well depth is 1-1.5 m, and the bottom of the well is provided with a gravel filter layer 14 with the thickness of 200 mm. The water collecting wells 1 are arranged at four corners of the foundation pit 15, one water collecting well is arranged at intervals of 30-40 m along the side of the foundation pit 15, and the bottoms of the water collecting wells 1 are 0.5-1 m lower than the water collecting pipes 4 connected with each other or are deeper than the water inlet valves of the water suction pumps 5. A water pump 5 is installed in the water collecting well 1, and the type selection of the water pump 5 is selected according to the water displacement and the depth of the foundation pit 15. And mounting and fixing the drainage main pipe 7 by adopting an angle steel welding bracket 11. The water outlet pipe 8 is provided with a 0.5% slope sedimentation tank 9, and the sedimentation tank 9 can adopt a finished product sedimentation tank 9.

And after the construction is finished, starting the water pump 5 and draining the foundation pit 15. The water in the foundation pit 15 flows into the drainage ditch 2, flows into the water collecting pipe 4 through the water filtering holes 16 on the water collecting pipe 4, and flows into the water collecting wells 1 on two sides of the water collecting pipe 4. The water pump 5 pumps water in the water collecting well 1 to the water pumping pipe 6, the water flows into the drainage main pipe 7 through the water pumping pipe 6, the water in the drainage main pipe 7 is gathered together and flows into the sedimentation tank 9 through the water outlet pipe 8 for sedimentation treatment, and the treated water is recycled. The system is suitable for the water-bearing layer cohesive soil or sandy soil stratum in industrial and civil building engineering, and the diving or surface water area with the precipitation depth less than 1 m.

The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A foundation pit shallow drainage system comprising: the system comprises a water collecting well, a drainage ditch, an inverted filter layer, a water collecting pipe, a water pump, a water pumping pipe, a drainage main pipe, a water outlet pipe and a sedimentation tank; it is characterized in that the preparation method is characterized in that,

the water collecting wells are arranged along the inner side pit edge of the foundation pit, drainage ditches are arranged at the bottom of the foundation pit between the adjacent water collecting wells, inverted filter layers are arranged in the drainage ditches, water collecting pipes are arranged in the inverted filter layers in a concealed mode, and water filtering holes are formed in the water collecting pipes; the water pump is installed in the sump pit, and the water pump is connected with the one end of drinking-water pipe, and the other end and the drainage trunk union coupling of drinking-water pipe, drainage trunk and the one end of outlet pipe are connected, and the other end and the sedimentation tank of outlet pipe are connected.

2. The foundation pit shallow drainage system of claim 1, further comprising an anti-filtration cloth, wherein the anti-filtration cloth is wound on the water collecting pipe.

3. The foundation pit shallow drainage system of claim 1, wherein the drainage holes are arranged in a quincunx shape.

4. The foundation pit shallow drainage system of claim 1, further comprising a support and a guard rail, wherein the support is arranged below the water collecting pipe, and the guard rail is installed on the ground on one side of the support close to the foundation pit.