CN216765949U

CN216765949U - Foundation pit drainage structure

Info

Publication number: CN216765949U
Application number: CN202220160152.8U
Authority: CN
Inventors: 张军军; 孔东梅; 董高峰; 王静; 刘彩玲; 胡亚婕; 韩静; 郝帅达; 李常冬
Original assignee: Shanxi Water Conservancy Construction Engineering Bureau Co ltd
Current assignee: Shanxi Water Conservancy Construction Engineering Bureau Co ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-06-17
Anticipated expiration: 2032-01-21

Abstract

The utility model discloses a foundation pit drainage structure, which comprises a foundation pit body, a drainage pipe installation groove and a water suction pump installed on the ground, wherein the drainage pipe installation groove is dug on the periphery of the foundation pit body, a drainage main pipe is arranged in the drainage pipe installation groove, the inner bottom of each through hole is provided with a drainage pipe, each drainage pipe is provided with a well point pipe penetrating through the through hole, the upper end of each well point pipe extends to the upper end of the drainage pipe installation groove, the top of the drainage main pipe is equidistantly connected with a plurality of water guide branch pipes, the well point pipes and the water guide branch pipes are connected through intermediate pipes, and the drainage main pipe is connected with a water suction pipe. Thereby making the foundation ditch keep dry to prevent the slope landslide.

Description

Foundation pit drainage structure

Technical Field

The utility model relates to the technical field of foundation pit drainage, in particular to a foundation pit drainage structure.

Background

The deep foundation pit refers to an engineering with excavation depth of more than 5 meters or more than three layers of basements, or a project with excavation depth of less than 5 meters but particularly complex geological conditions, surrounding environments and underground pipelines. When the foundation pit is excavated, a large amount of water easily permeates into the foundation pit, the construction progress is seriously influenced, and therefore, the water in the foundation pit must be removed in time.

According to patent CN 205314118U's proposition a drainage system of large-scale basis, the bottom is provided with the concrete bedding in the deep basal pit of large-scale basis, drainage system is including setting up bottom in the deep basal pit bright escape canal all around and setting up in the deep basal pit outside ground catch basin all around, bright escape canal and the sump pit intercommunication of setting in the deep basal pit bottom, the sump pit passes through drainage equipment and ground catch basin intercommunication, leave the working face of certain width between deep basal pit bottom edge and the concrete bedding outside line, the width in bright escape canal is less than the width of working face.

The above patents have disadvantages: when water in the foundation pit flows into the visible drainage ditch, some silt is mixed with easily, and when the silt is too much, the drainage pipe is blocked easily, so that a foundation pit drainage structure is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a foundation pit drainage structure, which is characterized in that soil and sand can be filtered by arranging a water filter pipe, so that a well point pipe is prevented from being blocked in a water pumping process, and the problem that a drainage pipe is easy to be blocked is solved.

In order to achieve the purpose, the utility model provides the following technical scheme: a foundation pit drainage structure comprises a foundation pit body, a drainage pipe installation groove and a water suction pump arranged on the ground, the drain pipe mounting groove is dug on the periphery of the foundation pit body, a main drain pipe is arranged in the drain pipe mounting groove, a plurality of through holes are opened to the ground at equal intervals in the drain pipe mounting groove, the inner bottom of each through hole is provided with a strainer, each strainer is provided with a well point pipe penetrating through the through hole, the upper end of the well point pipe extends to the upper end of the water drainage pipe mounting groove, the top of the water drainage main pipe is equidistantly connected with a plurality of water guide branch pipes, the number of the well point pipe and the number of the water guide branch pipes are the same, the well point pipe and the water guide branch pipe are arranged in one-to-one alignment, the well point pipe and the water guide branch pipe are connected through the middle pipe, the water pump is characterized in that a water pumping pipe is connected to the main drainage pipe, the other end of the water pumping pipe is connected with a water pump, and an outlet of the water pump is further connected with a water outlet pipe.

Optionally, the top of the well point pipe and the top of the water diversion branch pipe are provided with flanges, the two ends of the intermediate pipe are provided with flanges, the flange on the well point pipe and the flange on the intermediate pipe are connected through a plurality of bolts and nuts which are arranged around, and the flange on the water diversion branch pipe and the flange on the intermediate pipe are also connected through a plurality of bolts and nuts which are arranged around.

Optionally, the top of the through hole is connected with a dewatering well cover through a bolt, and a water-permeable packing layer which is in contact with the strainer pipe and the well point pipe is filled in the through hole.

Optionally, a plurality of pipe brackets are arranged in the drain pipe mounting groove at equal intervals, and embedded inserting nails inserted into the ground are symmetrically arranged at the bottom of each pipe bracket.

Optionally, an end cover is arranged at the lower end of the well point pipe, and the end cover is in threaded connection with the top of the strainer pipe through a bolt.

Optionally, a water collecting well is dug in the outer side of the drain pipe mounting groove, and the other end of the water outlet pipe is inserted into the water collecting well.

Compared with the prior art, the utility model has the following beneficial effects:

firstly, when the foundation pit body is excavated, in order to avoid the groundwater from permeating into the foundation pit body, the water suction pump is started, and the water strainer, the well point pipe, the middle pipe and the water guide branch pipe can be used for continuously pumping the groundwater, so that the original groundwater level is reduced to 0.5-1.5 meters below the foundation pit body, the foundation pit is kept dry, and the side slope collapse is prevented.

The arrangement of the water filtering pipes and the water permeable packing layer can filter soil and sand, so that the well point pipes are prevented from being blocked in the water pumping process.

The well point pipe and the water guide branch pipe are connected through the flange, and the well point pipe and the middle pipe are connected through the flange, so that the well point pipe and the water guide branch pipe are convenient to install.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of the present invention;

fig. 3 is an enlarged schematic view of the structure at a in fig. 1 according to the present invention.

In the figure: 1. a foundation pit body; 2. a drain pipe mounting groove; 3. a main drain pipe; 4. a through hole; 5. a water filter pipe; 6. well point pipe; 7. a water guide branch pipe; 8. an intermediate pipe; 9. a water pump; 10. a water pumping pipe; 11. a water outlet pipe; 12. a manhole cover for lowering water; 13. a permeable packing layer; 14. a tube holder; 15. embedding the inserted nails; 16. an end cap; 17. a water collecting well.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1 to 3, the present invention provides a technical solution: a foundation pit drainage structure comprises a foundation pit body 1, a drainage pipe installation groove 2 and a water suction pump 9 installed on the ground, wherein the drainage pipe installation groove 2 is dug on the periphery of the foundation pit body 1, a drainage main pipe 3 is arranged in the drainage pipe installation groove 2, a plurality of through holes 4 are formed in the drainage pipe installation groove 2 at equal intervals to the ground, a water filter pipe 5 is arranged at the inner bottom of each through hole 4, a well point pipe 6 penetrating through each through hole 4 is installed on each water filter pipe 5, the upper end of the well point pipe 6 extends to the upper end of the drainage pipe installation groove 2, a plurality of water guide branch pipes 7 are connected at the top of the drainage main pipe 3 at equal intervals, the well point pipes 6 are as same as the water guide branch pipes 7 in number, the well point pipes 6 are aligned with the water guide branch pipes 7 one by one, the well point pipes 6 are connected with the water guide branch pipes 7 through an intermediate pipe 8, and the drainage main pipe 3 is connected with a water suction pipe 10, the other end of the water suction pipe 10 is connected with a water suction pump 9, and an outlet pipe 11 is further connected to an outlet of the water suction pump 9.

Specifically, the ring flange is installed at the top of well point pipe 6 and aqueduct bleeder 7, the ring flange is installed at the both ends of intervalve 8, ring flange on the well point pipe 6 and the ring flange on the intervalve 8 are connected through a plurality of bolts and nuts that encircle the setting, and the ring flange on the aqueduct bleeder 7 and the ring flange on the intervalve 8 are also connected through a plurality of bolts and nuts that encircle the setting, and well point pipe 6 and the connection of aqueduct bleeder 7 to and well point pipe 6 and the connection of intervalve 8 all connect through the ring flange, and then conveniently install it.

Specifically, there is a well lid 12 that falls at the top of through-hole 4 through bolted connection, it has the packing layer 13 that permeates water that contacts with strainer 5, well point pipe 6 still to fill in through-hole 4, and the setting of strainer 5 and packing layer 13 that permeates water can filter earth and grit, avoids well point pipe 6 to take place to block up at the in-process that draws water.

Specifically, a plurality of pipe brackets 14 are arranged in the drain pipe mounting groove 2 at equal intervals, embedded insertion nails 15 inserted into the ground are symmetrically arranged at the bottom of each pipe bracket 14, and the pipe brackets 14 are used for supporting the drain main pipe 3.

Specifically, the lower end of the well point pipe 6 is provided with an end cover 16, the end cover 16 is in threaded connection with the top of the strainer pipe 5 through a bolt, and the arranged end cover 16 is used for realizing the connection work of the well point pipe 6 and the strainer pipe 5.

Specifically, the outside of drain pipe mounting groove 2 still digs and is equipped with sump pit 17, the other end of outlet pipe 11 inserts to sump pit 17 in, sump pit 17's setting is used for collecting the water that suction pump 9 pumped.

The working principle is as follows: this foundation ditch drainage structures, when excavation foundation ditch body 1, in order to avoid groundwater infiltration to foundation ditch body 1 inside, through starting suction pump 9, utilize strainer 5, well point pipe 6, intermediate pipe 8 and water guide lateral 9 can constantly take groundwater out for original groundwater level reduces to foundation ditch body 1 below 0.5 meter to 1.5 meters, thereby makes the foundation ditch keep dry, thereby prevents the side slope collapse.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a foundation ditch drainage structures, includes foundation ditch body (1) and drain pipe mounting groove (2) and installs suction pump (9) on subaerial, its characterized in that: the drainage pipe mounting groove (2) is dug on the periphery of the foundation pit body (1), a drainage main pipe (3) is arranged in the drainage pipe mounting groove (2), a plurality of through holes (4) are formed in the drainage pipe mounting groove (2) at equal intervals underground, a water filter pipe (5) is arranged at the inner bottom of each through hole (4), a well point pipe (6) penetrating through each through hole (4) is arranged on each water filter pipe (5), the upper end of each well point pipe (6) extends to the upper end of the drainage pipe mounting groove (2), a plurality of water guide branch pipes (7) are connected at equal intervals at the top of the drainage main pipe (3), the well point pipes (6) are the same as the water guide branch pipes (7), the well point pipes (6) and the water guide branch pipes (7) are arranged in one-to-one alignment, and the well point pipes (6) are connected with the water guide branch pipes (7) through intermediate pipes (8), the water pump is characterized in that a water pumping pipe (10) is connected to the main drainage pipe (3), the other end of the water pumping pipe (10) is connected with a water pumping pump (9), and an outlet pipe (11) is further connected to an outlet of the water pumping pump (9).

2. The foundation pit drainage structure according to claim 1, wherein: the flange plate is installed at the top of well point pipe (6) and water guide branch pipe (7), the flange plate is installed at the both ends of intermediate pipe (8), the flange plate on well point pipe (6) and the flange plate on intermediate pipe (8) are connected through a plurality of bolts and nuts that encircle the setting, and the flange plate on water guide branch pipe (7) and the flange plate on intermediate pipe (8) are also connected through a plurality of bolts and nuts that encircle the setting.

3. The foundation pit drainage structure according to claim 1, wherein: the top of through-hole (4) has precipitation well lid (12) through bolted connection, it has permeable packing layer (13) that contact with strainer (5), well point pipe (6) still to fill in through-hole (4).

4. The foundation pit drainage structure according to claim 1, wherein: a plurality of pipe brackets (14) are arranged in the drain pipe mounting groove (2) at equal intervals, and embedded inserting nails (15) inserted into the ground are symmetrically arranged at the bottom of each pipe bracket (14).

5. The foundation pit drainage structure according to any one of claims 1 to 4, wherein: an end cover (16) is arranged at the lower end of the well point pipe (6), and the end cover (16) is in threaded connection with the top of the strainer pipe (5) through a bolt.

6. The foundation pit drainage structure according to claim 1, wherein: the outside of drain pipe mounting groove (2) still digs and is equipped with sump pit (17), the other end of outlet pipe (11) inserts in sump pit (17).