CN214423394U

CN214423394U - Dewatering well reinforced by annular capsule

Info

Publication number: CN214423394U
Application number: CN202022834059.4U
Authority: CN
Inventors: 张力; 周振; 蒋远生; 叶怀文; 丁银成; 潘家琛; 曹笑笑; 宣善贵; 崔明洋; 徐万里; 经磊
Original assignee: Shanghai Yuanfeng Underground Engineering Technology Co ltd
Current assignee: Shanghai Yuanfeng Underground Engineering Technology Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-10-19
Anticipated expiration: 2030-12-01

Abstract

The utility model provides an adopt reinforced (rfd) precipitation well of annular utricule, it includes the wellhole, set up in precipitation well casing in the wellhole, the wellhole with clearance bottom between the precipitation well casing adopts the filter material to bury, and the top of filter material adopts the clay landfill, the cover is equipped with the cyclic annular utricule by the clay landfill on the precipitation well casing, cyclic annular utricule communicates to through a slip casting pipe outside the precipitation well casing, cyclic annular utricule surface has the structure that oozes a little, works as through slip casting pipe to when cyclic annular utricule pressurization pours into the clay thick liquid into, the clay thick liquid is followed ooze in the structure that oozes a little, consolidates clay soil. Adopt the technical scheme of the utility model, can eliminate the restriction of ground water level to the vacuum pump position.

Description

Dewatering well reinforced by annular capsule

Technical Field

The utility model relates to a building engineering field especially relates to an adopt reinforced (rfd) precipitation well of annular utricule.

Background

At present, underground projects such as highway tunnels, subways, underground pipe networks and the like built and proposed in China are increasing day by day, the projects can not pass through sections with complicated project hydrogeological conditions, and an underground water seepage field is in a dynamic balance state before the underground projects are built. Along with the excavation of underground works and the formation of the free surface, underground water is collected and seeped to the free surface to form the water seepage of the excavation surface of the underground works, so that a precipitation well is adopted to carry out precipitation during the excavation of a foundation pit.

In the traditional dewatering well, the sidewall piping is easily caused due to poor quality of the sidewall cohesive soil ball and the high-quality cohesive soil plugging, and great risk is caused to a foundation pit.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adopt reinforced (rfd) precipitation well of annular utricule to prevent precipitation well lateral wall piping.

The embodiment of the utility model provides an in, provide an adopt reinforced (rfd) precipitation well of annular utricule, it includes the wellhole, set up in precipitation well pipe in the wellhole, the wellhole with clearance bottom between the precipitation well pipe adopts the filter material to bury, and the top of filter material adopts the clay to bury, the cover is equipped with the annular utricule by the clay landfill on the precipitation well pipe, the annular utricule communicates to through a slip casting pipe outside the precipitation well pipe, annular utricule surface has the micro-seepage structure, when passing through the slip casting pipe to when the annular utricule pressurization is injected into the clay thick liquid, the clay thick liquid is followed ooze in the micro-seepage structure, consolidate the clay.

In the embodiment of the utility model provides an in, precipitation well casing bottom still is provided with the filter screen.

In an embodiment of the present invention, the annular bag bodies are plural.

In the embodiment of the utility model provides an in, the viscidity thick liquid in the cyclic annular capsule body is cement thick liquid or the two thick liquids of water glass.

In the embodiment of the utility model, the filter material is sand or rubble.

Compared with the prior art, the utility model discloses an adopt reinforced (rfd) precipitation well of annular utricule, when carrying out precipitation well construction, will annular utricule buries together with the precipitation well casing among the stratum, and pass through the slip casting pipe injects viscidity thick liquid into in the annular utricule, thereby make among the viscidity thick liquid infiltration cohesive soil in the annular utricule, consolidate the backfill viscidity soil between wellhole and the precipitation well casing, prevent the infiltration.

Drawings

Fig. 1 is a schematic structural diagram of the dewatering well reinforced by the annular bag body, in which viscous slurry is not injected into the annular bag body.

Fig. 2 is a schematic structural diagram of the dewatering well reinforced by the annular bag body according to the embodiment of the present invention after the annular bag body is filled with the viscous slurry.

Detailed Description

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. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

As shown in fig. 1 and 2, in an embodiment of the present invention, there is provided a dewatering well reinforced by using a toroidal bladder, which includes a well hole 1 and a dewatering well pipe 2 disposed in the well hole 1. The bottom of the gap between the well hole 1 and the precipitation well pipe 2 is filled with a filter material 3, and the bottom of the precipitation well pipe 2 is also provided with a filter screen 4 for collecting underground water. The filter material 3 can be sand or gravel so that groundwater can pass through.

The filter material 3 is buried by using the cohesive soil 5, the precipitation well pipe 2 is sleeved with an annular bag body 6 buried by the cohesive soil 5, and the annular bag body 6 is communicated with the outside of the precipitation well pipe 2 through a grouting pipe 7. The grouting pipe 7 is used for injecting viscous grout into the annular capsule body 6. The surface of the annular capsule body 6 is provided with a micro-seepage structure, and when viscous slurry is injected into the annular capsule body through the grouting pipe 7 in a pressurizing manner, the viscous slurry seeps out of the micro-seepage structure and permeates into gaps among the viscous soil 5 to reinforce the viscous soil. The viscous grout in the annular capsule body 6 is cement grout or water glass double grout.

In the embodiment of the present invention, the annular bag body 6 can be a flexible bag body, and when the grouting pipe 7 injects the viscous slurry into the annular bag body under pressure, the annular bag body 6 is spread, as shown in fig. 2.

The number of the annular bag bodies 6 is one or more, and the present invention is not limited thereto. When the number of the annular bag bodies 6 is multiple, the annular bag bodies are communicated with the grouting pipe 7 through a three-way connector 8.

The construction process of the dewatering well is as follows:

step 1: constructing a well hole on the operation surface according to the size of the well hole 1;

step 2: one or more annular bag bodies 6 are sleeved on the precipitation well pipe 2 according to the designed depth in advance on the operation surface and are fixed by strings or rubber and the like;

and step 3: the annular capsule bodies 6 are all connected by grouting pipes and tee joints;

and 4, step 4: putting the well-connected precipitation well pipe 2 into the well-formed hole, and filling the filter material 3 and the cohesive soil 5;

and 5: the annular bag body 6 is subjected to pressure grouting through the grouting pipe 7, so that cement paste or water glass double-liquid slurry seeps out, and backfill viscous soil between the well hole and the precipitation well pipe is reinforced to prevent water seepage.

To sum up, the utility model discloses an adopt reinforced (rfd) precipitation well of annular utricule, when carrying out precipitation well construction, will annular utricule buries together with the precipitation well casing among the stratum, and pass through the slip casting pipe pours into the viscidity thick liquid into in the annular utricule, thereby make among the viscidity thick liquid infiltration cohesive soil in the annular utricule, consolidate the backfill viscidity between well bore and the precipitation well casing, prevent the infiltration.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The dewatering well reinforced by the annular bag bodies is characterized by comprising a well hole and a dewatering well pipe arranged in the well hole, wherein the bottom of a gap between the well hole and the dewatering well pipe is filled with a filter material, the upper part of the filter material is filled with cohesive soil, the dewatering well pipe is sleeved with the annular bag bodies filled with the cohesive soil, the annular bag bodies are communicated to the outside of the dewatering well pipe through a grouting pipe, the surface of each annular bag body is provided with a micro-seepage structure, and when the annular bag bodies are injected with the cohesive slurry through the grouting pipes in a pressurizing mode, the cohesive slurry seeps out of the micro-seepage structure, and the cohesive soil is reinforced.

2. The dewatering well reinforced by the annular bag body according to claim 1, wherein the bottom of the dewatering well pipe is further provided with a filter screen.

3. The dewatering well reinforced by using the toroidal bladder as claimed in claim 1, wherein the toroidal bladder is plural.

4. The dewatering well reinforced by the annular capsule, according to claim 1, wherein the viscous slurry in the annular capsule is cement slurry or water glass double slurry.

5. The dewatering well reinforced by the annular bag body according to claim 1, wherein the filter material is sand or gravel.