CN210066792U

CN210066792U - Rich water quicksand stratum foundation ditch instrument formula precipitation well device

Info

Publication number: CN210066792U
Application number: CN201920820354.9U
Authority: CN
Inventors: 陈青; 秦正红; 陈惠敏; 赵青; 张明新
Original assignee: Changsha Municipal Engineering Co Ltd
Current assignee: Changsha Municipal Engineering Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-02-14
Anticipated expiration: 2029-05-31

Abstract

The utility model provides a rich water quicksand stratum foundation ditch instrument formula precipitation well device, includes internal diameter and suction pump size phase-match, guarantees that the suction pump is in the interior sleeve pipe of vertical state and the outer tube of coaxial suit in the interior sleeve pipe outside, outer tube and the sealed outer tube of fixing in same bottom plate of interior sheathed tube bottom, the bottom plate is sealed outer tube and interior sleeve pipe bottom opening, interior sheathed tube length is greater than the outer tube, the top annular opening of outer tube passes through the roof and seals, a plurality of inlet openings have been laid on outer tube pipe wall and the interior sleeve pipe wall of setting in the outer tube, the parcel has at least one deck isolation net on the outer wall of outer tube outside, the mesh of isolation net is less than stratum quicksand particle. The utility model discloses do not need set up the dewatering well in the foundation ditch before the foundation ditch excavation, make the soil body of digging the basal plane downwards to the certain degree of depth of foundation ditch from digging through this device and obtain the dewatering and consolidate to ensure that the liquefaction sand bed does not appear in the excavation basal plane, realize foundation ditch layering safety excavation.

Description

Rich water quicksand stratum foundation ditch instrument formula precipitation well device

Technical Field

The utility model relates to a rich water quicksand stratum foundation ditch instrument formula precipitation well device.

Background

In the case of the existing foundation pit excavation, the handling of open water on the foundation pit excavation base surface in the water-rich quicksand stratum is a difficult problem, and how to quickly and effectively complete the drainage and dewatering of the excavation base surface with a certain depth becomes a key problem in the whole construction process, so that how to drain and solidify the soil body with the certain depth on the excavation base surface of the water-rich quicksand stratum becomes a problem which is urgently needed to be solved in the foundation pit excavation construction, the existing foundation pit dewatering generally adopts a drainage and dewatering well in the foundation pit, an inner well point is adopted to drain the pit bottom before excavation, but because the underground air shaft, the access and the air pavilion foundation pit are small in building area and large in buried depth, the drainage and dewatering well point dewatering are adopted, the well distribution depth and the cost; in the water-rich quicksand stratum, a drainage ditch and a water collection well are arranged in the pit, the water collection well has a small slope angle of repose and is easy to collapse, quicksand is gathered into the water collection well along with the water confluence around the water collection well, a water pump is buried, the bottom surface of the water collection well is lifted, water accumulation and precipitation in the pit fail, and the next procedure cannot be carried out. In addition, the geological conditions of the foundation pit are rechecked and varied, the stratum condition cannot be accurately detected by geological prospecting data, and the situation that emergency measures such as temporary dewatering and dewatering are needed when a water-rich quicksand stratum, a water-rich gravel stratum and the like are frequently encountered in the excavation process of the foundation pit cannot be quickly handled in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rich water quicksand stratum foundation ditch instrument formula precipitation well device does not need to set up the dewatering well in the foundation ditch before the foundation ditch excavation, makes the soil body from excavating the basal plane downwards to the certain degree of depth of foundation ditch obtain the dewatering and consolidate through this device to ensure that the liquefaction sand layer does not appear in the excavation basal plane, realize foundation ditch layering safety excavation.

The utility model provides a rich water quicksand stratum foundation ditch instrument formula precipitation well device, including internal diameter and suction pump size phase-match, guarantee that the end of drawing water of suction pump places in the interior sleeve pipe of interior sheathed tube bottom and the outer tube of coaxial suit in the interior sleeve pipe outside, outer tube and the sealed fixing of interior sheathed tube bottom are on same bottom plate, the bottom plate is sealed with outer tube and interior sleeve pipe bottom opening, interior sheathed tube length is greater than the outer tube, the top annular opening of outer tube passes through the roof sealed, a plurality of inlet openings have been laid with setting up on the interior sleeve pipe wall in the outer tube to the outer tube pipe wall, the parcel has at least one deck to be used for sealing the separation net of outer tube inlet opening on the outer wall of outer tube, the mesh of separation net is less than stratum quick. The device adopts an inner sleeve and an outer sleeve, the two ends of the outer sleeve are sealed, and after the outer sleeve is buried by quicksand, the outer sleeve plays a role of a water collecting well due to good connectivity and strong water permeability of a sand-egg stratum; interior sleeve pipe is arranged in the intraductal performance precipitation well effect of overcoat, has reached the interior precipitation effect in the hole through including the intraductal suction pump that sets up of cover, places the suction pump including intraductal, has restricted the water pump through interior sleeve pipe space and has been in vertical state always, has guaranteed water pump drainage environment and work efficiency. The isolation net is arranged outside the outer sleeve to serve as an outer sleeve box, stratum shifting sand grains are prevented from entering the outer sleeve, when the device is used, the excavator excavates to a sand-egg layer, the excavator excavates a water collecting well at a reasonable position of an excavation face, the device is embedded in the water collecting well, a water suction pump is arranged in the inner sleeve to achieve water falling in a pit, the device is embedded in the inner sleeve in a layered circulation mode, layered excavation is achieved, and soil bodies of excavation depths are dredged and solidified to a certain extent.

Furthermore, the water inlet holes are uniformly distributed on the pipe walls of the outer sleeve and the inner sleeve.

Furthermore, lifting lugs are symmetrically fixed on the outer side wall of the top of the outer sleeve and/or the inner sleeve. Through installing the hoist and mount steel wire on the lug, the installation and the transportation to this device are convenient.

Furthermore, the top plate and the bottom plate are welded with the inner sleeve and the outer sleeve.

Further, the isolation net is a steel wire isolation net.

Furthermore, the inner sleeve is internally provided with a water suction pump, and the water inlet end of the water suction pump is arranged at the bottom of the inner sleeve.

Adopt above-mentioned structure, the utility model has the advantages of as follows:

1) the utility model discloses at rich water quicksand stratum, the excavation base face successfully sets up the sump pit, has realized dredging the base face from the excavation and has dredged the soil body of the certain degree of depth of foundation ditch downwards to consolidate the soil body. The principle is simple, the drainage efficiency is high, and the economic benefit is obvious.

2) The utility model discloses a but instrument formula precipitation well device cycle is used, and the cost of manufacture is low, processing is simple, simple installation, convenient operation.

3) By means of layered dewatering and layered excavation of the excavated stratum, the pumping capacity of underground water is reduced, energy consumption is reduced, the influence of pumping and drainage of a foundation pit on cracking of surrounding buildings and ground subsidence is reduced, and the environmental protection benefit is remarkable.

To sum up, the utility model discloses set up the dewatering well in the foundation ditch before not needing the foundation ditch excavation, make from excavating the soil body of basal plane downward to the certain degree of depth of foundation ditch and obtain the dewatering and consolidate through this device to ensure that the liquefaction sand layer does not appear in the basal plane of excavation, realize foundation ditch layering safety excavation.

Drawings

Fig. 1 is a top view of the present invention;

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

fig. 3 is a state diagram of the utility model during hoisting.

In the attached drawing, the water inlet device comprises 1 an outer sleeve, 2 an inner sleeve, 3 a steel wire isolation net, 4 a bottom plate, 5 a top plate, 6 a lifting lug, 7 a lifting steel wire, 8 a water inlet hole.

Detailed Description

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

As shown in figures 1 to 3, the device adopts two layers of steel sleeves, the outer sleeve 1 adopts a steel pipe with phi of 630mm and the wall thickness of 6mm, the height of the steel pipe is 800mm, and flower holes phi of 10mm @100mm are drilled on the pipe wall to be used as water inlet holes 8 of the outer sleeve 1; the inner sleeve 2 is made of a steel pipe with the diameter of 200mm and the wall thickness of 6mm, the height of the steel pipe is 1500mm, flower holes phi 6mm @50mm are drilled on the part of the pipe wall overlapped with the outer sleeve 1 to serve as water inlet holes 8 of the inner sleeve 2, the bottom end of the outer sleeve 1 is plugged by a steel plate with the diameter of 630mm and the thickness of 6mm serving as a bottom plate 4, the flower holes of the inner sleeve 2 are positioned in the outer sleeve 1 and positioned in the middle of the bottom plate 4, the top end of the outer sleeve 1 is welded and fixed with the outer sleeve 1 and the inner sleeve 2 by a steel ring with the outer diameter of 630mm, the inner diameter of 205mm and the.

Set up two lugs 6 at 1 lateral wall symmetry of outer tube, install hoist and mount steel wire 7 on lug 6, 2 tops of interior sleeve pipe are also symmetrical to be set up two lugs 6, as reserve lug 6, in using, dig the machine and excavate to the sand ovum layer, dig the machine and dig at excavation face rational position and establish the sump pit, hoist and mount this device in the sump pit through the loop wheel machine, place the suction pump in interior sleeve pipe 2 and realize downthehole precipitation, adopt the mode of layering circulation to carry out hydrophobic to the stratum foundation ditch, this device is also layered to bury underground, thereby realize the layering excavation, the soil body of the excavation depth obtains the dry and certain consolidation.

The foregoing is a preferred embodiment of the present invention, but it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a rich water quicksand stratum foundation ditch instrument formula precipitation well device which characterized in that: including interior sleeve pipe (2) of internal diameter and suction pump size assorted and suit outer tube (1) in interior sleeve pipe (2) outside, the bottom seal of outer tube (1) and interior sleeve pipe (2) is fixed on same bottom plate (4), bottom plate (4) are sealed with outer tube (1) and interior sleeve pipe (2) bottom opening, the length of interior sleeve pipe (2) is greater than outer tube (1), the top annular opening of outer tube (1) is sealed through roof (5), laid a plurality of inlet openings (8) on the pipe wall of outer tube (1) and the interior sleeve pipe (2) pipe wall of setting in outer tube (1), the parcel has at least one deck isolation net on the outer wall of outer tube (1), the mesh of isolation net is less than stratum quicksand particle diameter.

2. The tool type dewatering well device for the foundation pit of the water-rich quicksand stratum as claimed in claim 1, wherein: the water inlet holes (8) are uniformly distributed on the pipe walls of the outer sleeve (1) and the inner sleeve (2).

3. The tool type dewatering well device for the foundation pit of the water-rich quicksand stratum as claimed in claim 1, wherein: lifting lugs (6) are symmetrically fixed on the outer side wall of the top of the outer sleeve (1) and/or the inner sleeve (2).

4. The tool type dewatering well device for the foundation pit of the water-rich quicksand stratum as claimed in claim 1, wherein: the top plate (5) and the bottom plate (4) are welded with the inner and outer sleeves (1).

5. The tool type dewatering well device for the foundation pit of the water-rich quicksand stratum as claimed in claim 1, wherein: the isolation net is a steel wire isolation net (3).

6. The tool type dewatering well device for the foundation pit of the water-rich quicksand stratum as claimed in any one of claims 1 to 5, wherein: the water suction pump is arranged in the inner sleeve (2), and the water inlet end of the water suction pump is arranged at the bottom of the inner sleeve (2).