CN209989828U

CN209989828U - Additional shallow well structure based on deep pit precipitation

Info

Publication number: CN209989828U
Application number: CN201920516482.4U
Authority: CN
Inventors: 瞿成松; 张侗; 缪国建; 徐丹; 王姚军; 缪国伟
Original assignee: Shanghai Changkai Geotechnical Engineering Co Ltd
Current assignee: Shanghai Changkai Geotechnical Engineering Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-01-24
Anticipated expiration: 2029-04-16

Abstract

The utility model provides an additional shallow well structure based on deep pit precipitation, which comprises a pit body, a well pipe, a filter pipe, at least one flexible filter and at least one flexible filter mounting groove; the well pipe is arranged in the pit body, and the filter pipe is fixed in the middle of the well pipe and communicated with the outside of the well pipe; flexible filter mounting groove one end with the hole body switches on and the position with the position of chimney filter corresponds, flexible filter set up in the flexible filter mounting groove and connect through a check valve the chimney filter. The utility model discloses an additional shallow well structure based on pit precipitation has that the construction is convenient simple and easy, efficient, of high quality, receive the little and long service life's of interference degree advantage.

Description

Additional shallow well structure based on deep pit precipitation

Technical Field

The utility model relates to a foundation ditch precipitation field especially relates to an additional shallow well structure based on pit precipitation.

Background

The construction difficulty of foundation pit dewatering lies in when digging the bottom of a pit soon or digging local pit, and groundwater level does not drop, and the scene does not possess the condition of becoming the well yet, and the time is tight, and light-duty well point also has not come the time to be under construction, need reduce groundwater level at once, still need reduce groundwater pressure when back cover in addition.

Meanwhile, the method has the difficulties of poor field conditions, cross of multiple operations in the pit, small operation space, tight time and the like. The field observation well has more damage conditions. The current solution is generally for pit outer precipitation or supplement light well point, but has the problem that the engineering time is long, the environmental impact is great, the well head is destroyed easily, and the light well point of back cover is difficult to keep, and supplementary with high costs brings series harmful effects to foundation pit precipitation and stability.

Disclosure of Invention

To not enough among the above-mentioned prior art, the utility model provides an additional shallow well structure based on pit precipitation has that the construction is convenient simple and easy, efficient, of high quality, receives the little and long service life's of interference degree advantage.

In order to achieve the above object, the present invention provides an additional shallow well structure based on deep pit precipitation, comprising a pit body, a well pipe, a filter pipe, at least one flexible filter and at least one flexible filter mounting groove; the well pipe is arranged in the pit body, and the filter pipe is fixed in the middle of the well pipe and communicated with the outside of the well pipe; flexible filter mounting groove one end with the hole body switches on and the position with the position of chimney filter corresponds, flexible filter set up in the flexible filter mounting groove and connect through a check valve the chimney filter.

Preferably, the filter further comprises a first filter layer, and the first filter layer is fixed on the periphery of the filter in a wrapping mode.

Preferably, the first filter layer comprises a first filter material layer or a scrim layer.

Preferably, the filter further comprises a second filter layer, and the second filter layer is filled between the filter pipe and the pit body, between the first filter layer and the pit body, and/or between the well pipe and the pit body.

Preferably, the second filter layer comprises a second filter layer.

Preferably, the filter pit comprises a plurality of flexible filters and a plurality of flexible filter mounting grooves, and the flexible filter mounting grooves are radially distributed along the circumferential direction of the pit body.

Preferably, the well casing at the lower part of the filter tube forms a settling tube.

Preferably, at least one steel sheet is welded to the bottom of the well pipe.

The utility model discloses owing to adopted above technical scheme, make it have following beneficial effect:

the adoption of the flexible filter and the flexible filter mounting groove enables underground water in soil around the pit body to enter the pit pipe more quickly and conveniently, and improves the precipitation efficiency of the soil around the pit body. Through the cooperation of well casing, chimney filter and flexible filter, can effectively reduce the groundwater level of near soil layer rapidly, and the construction is convenient, precipitation is effectual, receive the interference degree little and long service life. The flexible filter mounting grooves distributed in a radial mode increase the precipitation effect area of the pit body, and improve the precipitation effect of the surrounding soil body underground water.

Drawings

Fig. 1 is a schematic structural diagram of an additional shallow well structure based on deep pit precipitation according to an embodiment of the present invention;

fig. 2 is a schematic view of a connection structure of the flexible filter and the filter tube according to an embodiment of the present invention.

Detailed Description

The following description of the preferred embodiments of the present invention will be given with reference to the accompanying drawings 1 and 2, and will make the functions and features of the present invention better understood.

Referring to fig. 1, an additional shallow well structure based on deep pit precipitation according to an embodiment of the present invention includes a well body 1, a well pipe 2, a filter pipe 3, at least one flexible filter 4, and at least one flexible filter mounting groove 5; the well pipe 2 is arranged in the pit body 1, and the filter pipe 3 is fixed in the middle of the well pipe 2 and communicated with the outside of the well pipe 2; the one end of the flexible filter mounting groove 5 is communicated with the pit body 1 and the position of the flexible filter mounting groove corresponds to that of the filter tube 3, and the flexible filter 4 is arranged in the flexible filter mounting groove 5 and is connected with the filter tube 3 through a check valve 6.

The adoption of the flexible filter 4 and the flexible filter mounting groove 5 enables underground water in soil around the pit body 1 to enter the well pipe 2 more quickly and conveniently, and improves the precipitation efficiency of the soil around. Through the cooperation of well casing 2, chimney filter 3 and flexible filter 4, can effectively reduce the groundwater level of near soil layer rapidly, and the construction is convenient, precipitation is effectual, receive that the degree of interference is little and long service life.

In this embodiment, the filter further comprises a first filter layer, and the first filter layer is fixed on the periphery of the filter tube 3 in a covering manner. The first filter layer can adopt a first filter material layer or a mesh fabric layer. The first filter material layer or the mesh fabric layer is directly bound on the periphery of the filter tube 3.

The filter is characterized by further comprising a second filter layer, wherein the second filter layer is filled between the filter pipe 3 and the pit body 1, between the first filter layer and the pit body 1 and/or between the well pipe 2 and the pit body 1. The second filter layer comprises a second filter material layer.

The well casing 2, which is located below the filter tube 3, forms a settling tube 21. At least one steel sheet is welded at the bottom of the well pipe 2.

Referring to fig. 2, the pit comprises a plurality of flexible filters 4 and a plurality of flexible filter installation grooves 5, wherein the flexible filter installation grooves 5 are radially arranged along the circumferential direction of the pit body 1.

The flexible filter mounting grooves 5 distributed in a radial mode increase the precipitation action area of the pit body 1 and improve the precipitation effect of the surrounding soil body underground water.

The utility model discloses additional shallow well structure based on pit precipitation, its work progress as follows:

selecting a well pipe 2 with 3.5 meters in length, wherein the upper part of the well pipe 2 is 3 meters in length, connecting a filter pipe 3 in the middle, waiting for an excavator, manually digging holes or a simple mechanical well (if field conditions allow) to dig a pit body 1 with more than 3 meters, putting the well pipe 2 with the filter pipe 3 with 3.5 meters in length into the pit body 1, digging grooves on the periphery to form a flexible filter installation groove 5, burying a flexible filter 4 with more than 1 meter and transversely arranging, bending the flexible filter 4, connecting the bottom of the filter pipe 3 in the pit body 1 by using a check valve 6, preparing a first filter material layer or a mesh layer of a first filter layer, directly arranging the first filter material layer and the mesh layer on the filter pipe 3, preparing coarse particle filter materials such as stones or coarse sands and the like, and backfilling the coarse particle filter materials on the periphery of the filter pipe 3 to form a second filter layer. And pumping water by a water pump after well completion and well flushing. And welding steel sheets at the bottom plate, and leaving a well to cast and smash the bottom plate. The maintenance quality of the bottom plate is ensured.

The utility model discloses an additional shallow well structure based on pit precipitation, it can reduce groundwater water level temporarily when precipitation water level difference point can not descend in the pit, need not go to dig a well in addition again.

The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.

Claims

1. An additional shallow well structure based on deep pit dewatering is characterized by comprising a pit body, a well pipe, a filter pipe, at least one flexible filter and at least one flexible filter mounting groove; the well pipe is arranged in the pit body, and the filter pipe is fixed in the middle of the well pipe and communicated with the outside of the well pipe; flexible filter mounting groove one end with the hole body switches on and the position with the position of chimney filter corresponds, flexible filter set up in the flexible filter mounting groove and connect through a check valve the chimney filter.

2. The additional shallow well structure based on deep pit precipitation as claimed in claim 1, further comprising a first filter layer fixed around the periphery of the filter tube.

3. Additional shallow well structure based on pit precipitation according to claim 2, characterized in that the first filter layer comprises a first filter layer or a gauze layer.

4. The additional shallow well structure based on deep pit precipitation as claimed in claim 2, further comprising a second filter layer filled between the filter tube and the pit body, between the first filter layer and the pit body and/or between the well pipe and the pit body.

5. Additional shallow well structure based on deep pit precipitation according to claim 4, characterized in that the second filter layer comprises a second filter layer.

6. An additional shallow well structure based on deep pit precipitation as claimed in any one of claims 1 to 5, comprising a plurality of said flexible filters and a plurality of said flexible filter mounting slots, said flexible filter mounting slots being radially arranged along the circumference of said pit body.

7. Additional shallow well structure based on deep pit precipitation according to claim 6, characterized in that the well pipe in the lower part of the filter pipe forms a settling pipe.

8. Additional shallow well structure based on deep pit precipitation according to claim 7, characterized in that at least one steel sheet is welded to the bottom of the well pipe.