CN217758891U

CN217758891U - Basement precipitation well shutoff waterproof decompression device

Info

Publication number: CN217758891U
Application number: CN202220635720.5U
Authority: CN
Inventors: 刘子玉; 付佳; 王新程; 杨薇; 霍薪安; 李非; 周彦
Original assignee: China Construction Sixth Engineering Division Co Ltd; China State Construction Bridge Corp Ltd
Current assignee: China Construction Sixth Engineering Division Co Ltd; China State Construction Bridge Corp Ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-11-08
Anticipated expiration: 2032-03-23

Abstract

The utility model discloses a waterproof decompression device of basement precipitation well shutoff, including precipitation well, precipitation well's outside cover is equipped with the sleeve pipe, the welding of sheathed tube outside middle part has the stagnant water ring, the sheathed tube inboard with the position of stagnant water ring co-altitude is provided with the apron, the upper surface of apron is provided with the intubate mouth that is used for precipitation, the upper surface of apron still is provided with the drinking-water pipe mouth that is used for precipitation. The utility model discloses can guarantee to carry out the construction of sealing a well under dry condition, can waterproof decompress at the shutoff in-process, compare with traditional well sealing mode, convenient operation, the shutoff is effectual, and the efficiency of construction is high.

Description

Basement precipitation well shutoff waterproof decompression device

Technical Field

The utility model belongs to the technical field of the building and specifically relates to a waterproof decompression device of basement precipitation well shutoff and decompression method thereof.

Background art:

for some super large ultra-deep foundation pit projects, in the construction stage of a basement, in order to prevent a bottom plate from floating upwards, the underground water level needs to be reduced, and a pipe well is adopted for dewatering, so that the underground water level is reduced to be lower than the designed elevation. And after the construction of the basement is finished, stopping dewatering and plugging the dewatering well. According to the traditional pipe well plugging method, after precipitation is stopped, the water level rises quickly, and the plugged concrete can be squeezed out of the pipe well by water pressure before hardening. In order to prevent piping at a well point and damage to a basement structure caused by poor plugging, an effective device and method are urgently needed to ensure that the high-quality and efficient plugging of the dewatering well is finished.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough among the above-mentioned prior art, provide one kind and can guarantee to carry out the construction of sealing a well under dry condition, can waterproof decompress at the shutoff in-process, compare with traditional sealing a well mode, convenient operation, the shutoff is effectual, a waterproof decompression device of basement precipitation well shutoff that efficiency of construction is high.

The purpose of the utility model is realized by the following specific technical scheme:

the utility model provides a waterproof decompression device of basement precipitation well shutoff, includes the precipitation well, the outside cover of precipitation well is equipped with the sleeve pipe, the welding of sheathed tube outside middle part has the seal ring, sheathed tube inboard with the same high position of seal ring is provided with the apron, the upper surface of apron is provided with the intubate mouth that is used for precipitation, the upper surface of apron still is provided with the drinking-water pipe mouth that is used for precipitation.

The inner diameter of the sleeve is as follows: 800mm, wall thickness: 5mm.

The width of the water stop ring is as follows: the thickness of 200mm is: 5mm.

The port of the cannula port and the port of the pumping pipe port are respectively provided with an external thread which is used for screwing with the cannula port thread buckle cap and the pumping pipe port thread buckle cap.

The utility model has the advantages that: installing the casing pipe outside the dewatering well and burying the casing pipe 50mm above the original ground; pouring a cushion layer, binding a bottom plate and pouring a concrete layer by using a steel bar; after the basement structure construction finishes and stops precipitation, adopt the little expansive concrete shutoff precipitation well, after the concrete pours to the take-up pipe mouth that sets up on the apron, the welded cover plate, through the intubate mouth and the drinking-water pipe mouth that set up on the apron, can be convenient take out water, guarantee the condition of welding dry operation, treat that the apron welding finishes, can continue to pour into the concrete again through the intubate mouth and the drinking-water pipe mouth that set up on the apron until the apron bottom, the mouth of pipe on the apron is sealed afterwards, adopt the little expansive concrete that is higher than bottom plate intensity one grade at last to pour apron upper portion concrete until bottom plate top elevation. Thereby realized can waterproof decompression at the shutoff in-process, compared with traditional shut-in well mode, convenient operation, the shutoff is effectual, and the efficiency of construction is high.

Drawings

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

FIG. 2 is a schematic view of the top view structure of the connection between the sleeve and the water stop ring of the present invention;

FIG. 3 is a schematic view of the cover plate structure of the present invention;

FIG. 4 is a schematic view of the embodiment of the present invention;

reference numerals are as follows: pipe 1 water stop ring 2 cover plate 3 pipe inserting mouth 4 pipe inserting mouth 5 pipe inserting mouth screw cap 6 water pumping pipe mouth screw cap 7 dewatering well 8 cushion layer concrete layer 9 bottom plate concrete layer 10 waterproof layer 11 micro expansion concrete layer 12

Detailed Description

The invention will be described in detail with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1 to 4, the utility model relates to a waterproof decompression device of basement precipitation well shutoff includes precipitation well 8, precipitation well 8's outside cover is equipped with sleeve pipe 1, the sleeve pipe internal diameter is: 800mm, wall thickness: 5mm; the welding of the outside middle part of sleeve pipe 1 has seal ring 2, the width of seal ring is: the thickness of 200mm is: 5mm; a cover plate 3 is arranged at the position of the same height of the inner side of the sleeve 1 and the water stop ring 2, an insertion pipe opening 4 for precipitation is arranged on the upper surface of the cover plate 3, and a water pumping pipe opening 5 for precipitation is also arranged on the upper surface of the cover plate 3; the ports of the cannula port 4 and the pumping pipe port 5 are respectively provided with external threads which are screwed with the cannula port thread buckle cap 6 and the pumping pipe port thread buckle cap 7.

The utility model discloses a decompress the method as follows:

firstly, placing a casing 1 on the ground outside a dewatering well 8, wherein the soil penetration depth of the lower end of the casing 1 is 50mm;

welding a water-stopping steel ring 2 on the periphery of the outer side of the sleeve 1;

thirdly, a cushion concrete layer 9 and a waterproof layer 11 are sequentially poured on the outer side of the sleeve 1;

binding a bottom plate steel bar on the waterproof layer 11, and then pouring a bottom plate concrete layer 10 to a certain height;

step five, placing the cover plate 3 provided with the socket mouth 4 and the pumping mouth 5 inside the sleeve 1,

step six, a water inlet pipe is arranged to the dewatering well through the pipe inserting opening 4, and internal water is pumped out through a water pump;

seventhly, after the height of the cover plate 3 is adjusted to be at the same horizontal position with the water stop steel ring 2 on the outer side of the sleeve 1, the cover plate is welded and fixed with the inner wall of the sleeve 1;

step eight, after the cover plate 3 is fixed, a concrete pump pipe and a vibrating rod are fed from the pipe inserting port 4, a concrete layer at the lower part of the cover plate 3 is poured, a water inlet pipe is fed through the water pumping pipe port 5, and water in the cover plate is pumped out through a water pump;

step nine, plugging the dewatering well 8 after dewatering stops, namely pouring micro-expansion concrete 12 into the dewatering well 8; pouring the mixture until the height of the mixture is 400mm from the bottom of the cover plate 3;

step ten, after pouring, screwing the pipe inserting port thread buckle cap 6 on the pipe inserting port 4 for sealing, and screwing the water pumping pipe port thread buckle cap 7 on the water pumping pipe port 5 for sealing;

step eleven, pouring a concrete layer on the upper part of the cover plate 3 by adopting micro-expansion concrete with the strength grade higher than the strength grade of the concrete of the foundation bottom plate by one grade until the top elevation of the bottom plate, and ensuring that the concrete does not crack in the hardening stage.

In the implementation of the steps, the specific technical requirements of each step are as follows:

according to the specific conditions of a construction site, the steel casing 1 is placed on the outer side of the dewatering well 8, the dewatering well 8 is guaranteed to be located in the middle of the casing 1, and the depth of the casing 1 buried in the original ground is 50mm. The height of the sleeve 1 is equal to the thickness of the bottom plate, the thickness of the cushion layer, the thickness of the waterproof layer and 50mm, the inner diameter of the sleeve 1 is 800mm, and the wall thickness of the sleeve 1 is 5mm. A water stop ring 2 is welded on the outer circumference of the upper part of the sleeve 1, the width of the water stop ring 2 is 200mm, the distance between the water stop ring 2 and the top of the sleeve 1 is 1/2 of the thickness of the bottom plate, and the thickness of the water stop ring 2 is 5mm; pouring a cushion concrete layer 9, constructing a waterproof layer 11 (paying attention to that the waterproof layer returns to the lower part of the water-stop steel ring 2 and sealing treatment), binding a bottom plate steel bar, and pouring bottom plate concrete 10, wherein the water-stop steel ring 2 plays a role in stopping water of the bottom plate; and after the construction of the basement is finished, backfilling soil is finished, and after the precipitation is stopped, plugging the precipitation well. Pouring micro-expansion concrete 12 into the dewatering well 8 to a position 400mm away from the bottom of the cover plate 3; and the cover plate 3 is welded inside the steel sleeve 1 and is positioned at the same horizontal position with the outer water stop steel ring 2. The diameter of the cover plate 3 is 800mm, and the thickness of the cover plate 3 is 10mm; a hole is formed by taking the position 200mm away from the outer edge of the cover plate 3 as the center of a circle, the diameter of the hole is 100mm, the upper part of the hole is provided with a pipe inserting opening 4 with screw threads, and the height of the hole is 30mm; the position of the other side, which is 00mm away from the outer edge of the cover plate 3, is a circle center, the diameter of the hole is 32mm, the upper part of the hole is provided with a water pumping pipe opening 5 with screw threads, and the height of the hole is 50mm. Before the cover plate 3 is welded, a water inlet pipe is arranged to the dewatering well through the pipe inserting opening 4, and the water in the dewatering well is pumped out through a water pump, so that the welding process is carried out under a dry condition; after the cover plate 3 is welded, the water pipe is drawn out, a concrete pump pipe and a vibrating rod are put in, concrete at the lower part of the cover plate 3 is poured, the water pipe is put in through a water pumping pipe opening 5, internal water is pumped out through a water pump, and the pouring quality of the concrete is ensured until the bottom of the cover plate 3; after concrete pouring on the lower portion of the cover plate 3 is finished, screwing the pipe inserting port screw cap 6 on the pipe inserting port 4, and screwing the water pumping pipe port screw cap 7 on the water pumping pipe port 5; and finally, pouring concrete on the upper part of the cover plate 3 by using micro-expansion concrete with the strength grade higher than that of the concrete of the foundation bottom plate by one grade until the top elevation of the bottom plate, so as to ensure that no crack occurs in the concrete in the hardening stage.

Claims

1. The utility model provides a waterproof decompression device of basement precipitation well shutoff, includes precipitation well (8), characterized by, the outside cover of precipitation well (8) is equipped with sleeve pipe (1), the outside middle part welding of sleeve pipe (1) has stagnant water ring (2), the inboard of sleeve pipe (1) with the position of stagnant water ring (2) same height is provided with apron (3), the upper surface of apron (3) is provided with intubate mouth (4) that are used for precipitation, the upper surface of apron (3) still is provided with drinking-water pipe mouth (5) that are used for precipitation.

2. The plugging waterproof decompression device for the basement dewatering well according to claim 1, wherein the inner diameter of the sleeve (1) is as follows: 800mm, wall thickness: 5mm.

3. The plugging waterproof decompression device for the basement dewatering well according to claim 1, wherein the width of the water stop ring (2) is as follows: the thickness of 200mm is: 5mm.

4. The plugging waterproof decompression device for the basement dewatering well according to claim 1, wherein the end ports of the pipe inserting port (4) and the water pumping pipe port (5) are respectively provided with an external thread for screwing with a pipe inserting port thread cap (6) and a water pumping pipe port thread cap (7).