Device and method for pulling out precipitation well

A technology for dewatering wells and working methods, which is applied in the field of geotechnical engineering, can solve the problems of increasing difficulty in construction, pulling out dewatering wells, pulling out, etc., and achieves the effects of easy obstacle removal, less interference, and convenient use

Pending Publication Date: 2019-06-14
SHANGHAI CHANGKAI GEOTECHN ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, after the construction of the precipitation well, it is difficult to pull it out of the foundation intact, which not only causes waste, but also increases the difficulty of subsequent construction
Also there is no effective way to pull out the precipitation well in the prior art

Method used

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  • Device and method for pulling out precipitation well
  • Device and method for pulling out precipitation well
  • Device and method for pulling out precipitation well

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Experimental program
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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] see Figure 1-Figure 4 , a device for pulling out a dewatering well, comprising a first drill pipe 7, a second drill pipe 6, a jack; the first drill pipe 7 is used to drill into the filling material layer around the well pipe 8 of the dewatering well, so that the filling material layer The soil is loose; the second drill pipe 6 extends downward from the mouth of the well pipe 8 and drills through the inner filler of the filter pipe 2. The drill bit of the second drill pipe 6 is provided with a foldable and extendable umbrella-shaped bracket 601. The umbrella-shaped When the bracket 601 is stretched, the outer diameter is equivalent to the diameter of the well pipe 8; the upper end of the second drill pipe 6 is fixedly connected to the support plate 9; The support plate 9 corresponds.

[0025] In this embodiment, there are three jacks, ...

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Abstract

The invention relates to a device for pulling out a precipitation well. The device includes a first drill pipe, a second drill pipe and jacks, the first drill pipe is used for drilling into a fillingmaterial layer around a well pipe of the precipitation well to make the filling material layer loose, the second drill pipe extends downwards from a pipe mouth of the well pipe and drills through a bottom plate of a precipitation pipe to prevent the well pipe such as a filter pipe from being fallen off, a drill bit of the second drill pipe is provided with an umbrella-shaped bracket capable of being folded and stretched, and the external diameter of the umbrella-shaped bracket during extension is equivalent to diameter of the the well pipe; the upper end of the second drill pipe is fixedly connected with a supporting plate, at least two jacks are erected on a jack base around the surface of the precipitation well, push rods of the jacks correspond to the supporting plate, after the well pipe is pulled out, grouting and hole sealing or backfilling corresponding to the stratum are conducted, and sustainable development is promoted. The effective device and method for pulling out the precipitation well is provided, the operation process is convenient, quick and simple, the efficiency is high, obstacle removing is easy, the interfered degree is low, and use is convenient.

Description

technical field [0001] The invention relates to a device and a method for pulling out a precipitation well, belonging to the technical field of geotechnical engineering. Background technique [0002] At present, after the construction of the precipitation well, it is difficult to pull it out from the foundation intact, which not only causes waste, but also increases the difficulty of subsequent construction. Also there is no effective way to pull out the precipitation well in the prior art. Contents of the invention [0003] The object of the present invention is to provide a device and method for pulling out a dewatering well, which has the advantages of convenient and simple operation process, high efficiency, easy obstacle removal, less interference and convenient use. [0004] The present invention takes the following technical solutions: [0005] A device for pulling out a dewatering well, comprising a first drill pipe 7, a second drill pipe 6, and a jack; the first...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/10
Inventor 瞿成松毛喜云
Owner SHANGHAI CHANGKAI GEOTECHN ENG
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