CN215210526U

CN215210526U - A precipitation well shut-in well structure for wearing raft board

Info

Publication number: CN215210526U
Application number: CN202121564939.2U
Authority: CN
Inventors: 陆顺; 邓利平; 代聪; 周茂理; 陈文林; 马策文; 熊进龙; 张洪超; 祁星昱; 赵俊; 潘永彬
Original assignee: China Railway No 8 Engineering Group Co Ltd; Construction Co of China Railway No 8 Engineering Group Co Ltd
Current assignee: China Railway No 8 Engineering Group Co Ltd; Construction Co of China Railway No 8 Engineering Group Co Ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-12-17
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses a precipitation well shut-in structure for wearing raft, including bed course (1), waterproof layer (2) have been laid to bed course (1) top, raft (3) set up in waterproof layer (2) upper surface, its characterized in that, precipitation well shut-in structure includes a plurality of vertical long tubes (4), and vertical long tube (4) extend raft (3), waterproof layer (2) and bed course (1) to the vertical extension of underground, the utility model is suitable for a precipitation well under the geological conditions that groundwater level is high, the permeability coefficient is big, groundwater is abundant can guarantee to shut-in the quality of backfilling concrete, effectively prevents the bottom plate infiltration.

Description

A precipitation well shut-in well structure for wearing raft board

Technical Field

The utility model relates to a precipitation well shut-in structure for wearing raft relates to building engineering construction technical field.

Background

The tube well is widely used in raft foundation engineering in construction engineering in areas with abundant underground water to reduce the underground water level, the underground water level required by design still needs to be maintained during the construction of an upper structure after the foundation construction is finished, and the precipitation can be stopped after the construction of the upper structure and the foundation settlement reach certain conditions, so that a precipitation well is sealed. After the dewatering is stopped, the traditional method for sealing the well is to fill gravel to a certain height in the well, then pour the micro-expansion fine aggregate concrete to a designed elevation, and then seal and weld the micro-expansion fine aggregate concrete and the vertical long pipe well. However, under the geological conditions of abundant underground water and large permeability coefficient, after precipitation is stopped, the water level in the well rises quickly, the traditional mode cannot meet the plugging quality requirement, the potential leakage hazard exists, and even plugging cannot be performed under the conditions of quick return water and large water inrush.

The utility model patent application with application number CN202022273939.9 discloses a well sealing device and method for a precipitation well with large water pressure in a building raft and a construction method, wherein the well sealing device comprises a waterproof protective layer which is connected with the building raft and is arranged above a wellhead of the precipitation well, and water control equipment which is used for controlling the water pressure in the precipitation well to prevent the water pressure from being too large; the water control equipment comprises a first water pumping pipe, a second water pumping pipe, a third water pumping pipe, a self-priming pump and a temporary reservoir. The utility model discloses construction convenience has avoided the basal layer concrete that pours now to soak, the infiltration, has avoided building raft board crackle and seepage, has guaranteed engineering structure quality safety, and is respond well, and the input cost is low, is worth using widely. The device adopts a pumping mode to control the water pressure to be overlarge, and has more instability factors, such as the pressure of water in the dewatering well cannot be effectively controlled after the device fails, and when the pressure of water in the dewatering well is overlarge, damage is generated to cause the structural damage of the dewatering well to cause safety accidents; and if the water pumping pipe is blocked in the device, the problem that the leakage quality hidden danger or even the blockage cannot be realized in the plugging of the precipitation well reserved in the raft foundation under the conditions of quick water return of the precipitation well and large water burst after the precipitation is stopped.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an invention aim at, to the problem that exists, provide a precipitation well shut-in structure for wearing raft, it is applicable to the precipitation well under the geological conditions that ground water level is high, the osmotic coefficient is big, groundwater is abundant, the problem of the potential leakage quality hidden danger or even unable shutoff exists in the precipitation well shutoff of solution precipitation well backwater fast, that reserves in the raft foundation under the big condition of gushing water after stopping precipitation, interim antiseep measure targets in place, construction quality is guaranteed, effectively solved the raft board after the shutoff well have the hidden danger problem of infiltration, can guarantee the quality that the well shut-in backfilled concrete, effectively prevent the bottom plate infiltration.

The utility model adopts the technical scheme as follows:

the utility model discloses a precipitation well shut-in structure for wearing raft, including the bed course, waterproof layer has been laid to the bed course top, the raft set up in waterproof layer upper surface, its characterized in that, precipitation well shut-in structure includes a plurality of vertical long tubes, and vertical long tube stretches raft, waterproof layer and bed course to the vertical extension of underground, and it is intraductal to stretch into bed course below precipitation well, vertical long tube and precipitation well casing junction are the wedge opening, adopt wedge part to connect the reinforcement.

Further, vertical long tube passes the raft board and extends to the underground, and vertical long tube passes raft board inside branch and extends to the vertical long tube outside and is provided with a plurality of stagnant water wing rings, stagnant water wing ring perpendicular to vertical long tube, the setting of symmetry equidistance on vertical long tube.

Further, be provided with the waterproof layer between bed course and the waterproof protection layer, the waterproof layer extends and turns over the laminating in vertical long tube setting along the bed course, turn over the laminating vertical long tube on the waterproof layer and extend to stagnant water wing ring below.

Furthermore, an anti-seepage plugging bottom plate is arranged below the dewatering well sealing structure, and a rubber water stop strip is arranged in a clamping groove of the anti-seepage plugging bottom plate.

Furthermore, the lower end of the vertical long pipe is provided with a vertical long pipe bottom support, and the anti-seepage plugging bottom plate is placed on the vertical long pipe bottom support, rotates and is clamped below a limiting clamp on the inner wall of the vertical long pipe; stopping precipitation and taking out the water pump, firstly adopting broken stones to backfill the precipitation well to the elevation position below the bottom support of the vertical long pipe.

Furthermore, the vertical long pipes of prevention of seepage stifled bottom plate and both sides enclose and form cylindrical hollow out construction, have filled compensation shrinkage pea gravel concrete in the cylindrical hollow out construction, raft board top elevation parallel department above the cylindrical hollow out construction is provided with the apron, forms cylindrical enclosed construction.

Further, the vertical long pipe upwards passes through raft board top elevation setting.

The technical effects of the utility model are as follows:

the utility model provides a precipitation well shut-in structure for wearing raft, which forms a precipitation well pipe shut-in structure through a vertical through structure, solves the problems that the precipitation well reserved in the raft foundation has hidden danger of leakage quality and even can not be plugged under the conditions of fast water return and large water burst of the precipitation well after stopping precipitation, and effectively solves the hidden danger problem that the water seepage exists in the shut-in well after the raft; the utility model discloses the construction is simple and convenient, and construction speed is fast, effectively reduces precipitation well node seepage risk.

The method comprises the following specific steps:

1. the utility model discloses a vertical through structure pierces through the precipitation well pipe that building basis raft, waterproof layer and bed course set up with the connection bed course below, vertical through structure includes the vertical long tube that the symmetry set up to stretch into the inside outside of raft at vertical long tube and be provided with stagnant water wing ring, increase infiltration area and infiltration external diameter through stagnant water wing ring, with reinforcing prevention of seepage effect.

2. The utility model discloses when shutoff precipitation well, use the vertical long tube of stifled bottom plate shutoff of prevention of seepage, ensure that compensation shrink pea gravel concreten backfills and is in dry operation environment, avoid the concrete sluicing condition completely, guaranteed concrete construction quality, ensured the prevention of seepage effect, furtherly, the stifled bottom plate of prevention of seepage is the trough-shaped structure, uses the leakproofness of rubber sealing strip reinforcing prevention of seepage stifled bottom plate self on the one hand, extremely strong stability of stifled bottom plate of prevention of seepage and vertical long tube connection on the one hand.

Drawings

Fig. 1 is a schematic view of the well sealing structure of the dewatering well for wearing the raft.

The labels in the figure are: 1-cushion layer, 2-waterproof protective layer, 3-raft plate, 4-vertical long pipe, 5-precipitation well pipe, 6-water stop wing ring, 7-waterproof layer, 8-anti-seepage blocking bottom plate, 9-rubber water stop strip, 10-vertical long pipe bottom support, 11-limiting clamp, 12-compensation shrinkage fine aggregate concrete, 13-cover plate and 14-sandstone.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

In this embodiment, the adopted data is a preferred scheme, but is not used to limit the present invention;

as shown in fig. 1, the embodiment provides a precipitation well shut-in structure for wearing raft, including the bed course, waterproof protective layer has been laid to the bed course top, the raft set up in waterproof protective layer upper surface, its characterized in that, precipitation well shut-in structure includes a plurality of vertical long tubes, and vertical long tube extends raft, waterproof protective layer and bed course to the underground vertical extension, stretches into in the precipitation well pipe below the bed course, vertical long tube and precipitation well pipe junction are the wedge opening, adopt wedge part to connect the reinforcement. Preferably, in this embodiment, the wedge-shaped member is a wooden wedge to reinforce its connection, and the gap at the joint of the wooden wedge is sealed by a caulking material to prevent the pad concrete from leaking into the precipitation well.

In this embodiment, vertical long tube passes the raft board and extends to the underground, and vertical long tube passes inside branch of raft board and extends outside vertical long tube and is provided with a plurality of stagnant water wing rings, the vertical long tube of stagnant water wing ring perpendicular to sets up symmetry equidistance on vertical long tube. Preferably, adopt two water stopping wing rings of two sides symmetry setting in this embodiment, the wing ring is located raft middle part position, through having increased the seepage footpath to the stagnant water effect of reinforcing precipitation well shut-in well structure. Furthermore, the width of each water-stopping wing ring is 150mm, the distance between the first water-stopping wing ring and the upper surface of the raft is 150mm from top to bottom, and the distance between the second water-stopping wing ring and the lower surface of the raft is 150mm from top to bottom.

In this embodiment, be provided with the waterproof layer between bed course and the waterproof protection layer, the waterproof layer is followed the bed course extension and is upturned the laminating in vertical long tube setting, the waterproof layer is upturned the vertical long tube of laminating and extends to stagnant water wing ring below.

In the embodiment, the vertical long pipe upwards penetrates through the height of the top of the raft plate, so that pump blockage or well burying caused by entering of sundries into the dewatering well is avoided; after the precipitation is stopped and the water pump is taken out, firstly, gravel is adopted to backfill the precipitation well to the elevation position below the bottom support of the vertical long pipe.

In this embodiment, preferably, the vertical long tube adopts long diameter steel pipe, and the steel pipe diameter is 300mm, and the length that the steel pipe stretches into precipitation well pipe is 150mm, bed course thickness 100mm, and waterproof layer and waterproof protective layer thickness total 45mm, and raft thickness is 1200mm, and the steel pipe total length is 1645 mm.

In this embodiment, an anti-seepage plugging bottom plate is arranged below the dewatering well sealing structure, and a rubber water stop strip is arranged in a clamping groove of the anti-seepage plugging bottom plate. The lower end of the vertical long pipe is provided with a vertical long pipe bottom support, preferably, the anti-seepage plugging bottom plate is placed on the steel pipe bottom support by a special magnetic tool and is clamped below the limiting clamp on the inner wall of the vertical long pipe after rotating for a certain angle. Preferably, the size of the limiting card is 8mm multiplied by 8mm, and the distance between the lower surface of the limiting card and the vertical long tube bottom support is 25 mm; further, after the lower part of the dewatering well shut-in structure is plugged, the vertical long pipes exceeding the top surface of the raft are cut off by gas cutting.

In the embodiment, preferably, an anti-seepage plugging base plate with the outer diameter of 296mm is adopted, an annular groove with the width of 15mm and the depth of 15mm is arranged at the lower part of the anti-seepage plugging base plate, and a rubber water stop strip with the width of 15mm multiplied by 15mm is embedded in the annular groove; two steel bars which are mutually perpendicular and crossed are welded on the annular plugging cover plate, the size of each steel bar is 280mm multiplied by 5mm, the steel bars are clamped by a special tool with magnetism and then rotate, and the anti-seepage plugging bottom plate is clamped below the limiting clamp.

In this embodiment, preferably, the design strength of pouring in the vertical long tube is improved by one level compared with the compensation shrinkage fine aggregate concrete of the raft plate with the same impervious grade.

In this embodiment, the vertical long tube of stifled bottom plate of prevention of seepage and both sides surrounds formation cylindrical hollow out construction, has filled compensation shrink pea gravel concrete in the cylindrical hollow out construction, raft board top elevation parallel department is provided with the apron above the cylindrical hollow out construction, preferably, the apron adopts circular steel apron and vertical long tube welding, forms cylindrical enclosed construction.

The above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a precipitation well shut-in well structure for wearing raft, includes bed course (1), has laid waterproof layer (2) above bed course (1), raft (3) set up in waterproof layer (2) upper surface, a serial communication port, precipitation well shut-in well structure includes a plurality of vertical long tubes (4), and vertical long tube (4) are to vertical extension raft (3), waterproof layer (2) and bed course (1) of extending of underground, stretch into in bed course (1) below precipitation well casing (5), vertical long tube (4) and precipitation well casing (5) junction are the wedge opening, adopt the connection of wedge part to consolidate.

2. The dewatering well sealing structure for penetrating through a raft plate according to claim 1, wherein the vertical long pipes (4) penetrate through the raft plate (3) and extend underground, the vertical long pipes (4) penetrate through the interior of the raft plate (3) and extend to the outer side of the vertical long pipes (4) to be provided with a plurality of water stop wing rings (6), and the water stop wing rings (6) are perpendicular to the vertical long pipes (4) and are symmetrically arranged on the vertical long pipes (4) at equal intervals.

3. The well sealing structure of the dewatering well for penetrating through the raft board according to claim 2, wherein a waterproof layer (7) is arranged between the cushion layer (1) and the waterproof protective layer (2), the waterproof layer (7) extends along the cushion layer (1) and is upwards turned and attached to the vertical long pipe (4), and the waterproof layer (7) is upwards turned and attached to the vertical long pipe (4) and extends to the position below the water-stop wing ring (6).

4. The dewatering well shut-in structure for a raft-through plate according to claim 3, wherein an anti-seepage plugging bottom plate (8) is arranged below the dewatering well shut-in structure, and rubber water stop strips (9) are arranged in clamping grooves of the anti-seepage plugging bottom plate (8).

5. The dewatering well sealing structure for penetrating through a raft plate according to claim 4, wherein a vertical long pipe base (10) is arranged at the lower end of the vertical long pipe (4), and the anti-seepage sealing bottom plate (8) is placed on the vertical long pipe base (10) and rotates to be clamped below a limiting clamp (11) on the inner wall of the vertical long pipe (4).

6. The well sealing structure of the dewatering well for penetrating through the raft, according to claim 5, is characterized in that the anti-seepage plugging bottom plate (8) and the vertical long pipes (4) on two sides surround to form a cylindrical hollow structure, compensation shrinkage fine aggregate concrete (12) is filled in the cylindrical hollow structure, and a cover plate (13) is arranged above the cylindrical hollow structure at the top elevation parallel position of the raft (1) to form a cylindrical closed structure.

7. The well sealing structure of dewatering well for raft penetration according to claim 6, characterized in that the vertical long pipes (4) are arranged to penetrate the top elevation of the raft (1) upwards.