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Ball-valve-connected reversed-tree-root-shaped water filtering pipe type dewatering well and method for drilling expanded base

A technology for water filter pipes and dewatering wells, which is applied in the direction of drilling equipment and methods, drilling equipment, drill bits, etc., can solve the problems of limited water intake capacity, improve the bearing capacity of pile foundations, increase water pumping, and increase water intake. The effect of water cross-sectional area

Active Publication Date: 2020-08-21
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patent adopts the method of increasing the diameter of the filter pipe, which has a limited improvement in the water intake capacity. In addition, in order to improve the pumping capacity of the dewatering well, the patent uses the maximum diameter of the filter pipe at the enlarged end to be close to the diameter of the borehole, which may cause problems during the hoisting process.

Method used

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  • Ball-valve-connected reversed-tree-root-shaped water filtering pipe type dewatering well and method for drilling expanded base
  • Ball-valve-connected reversed-tree-root-shaped water filtering pipe type dewatering well and method for drilling expanded base
  • Ball-valve-connected reversed-tree-root-shaped water filtering pipe type dewatering well and method for drilling expanded base

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A kind of ball valve used for drilling and expanding the bottom is connected to the anti-tree-rooted water filter pipe dewatering well, such as Figure 1~2 As shown, it includes a borehole and a dewatering well 2, wherein: the bottom of the borehole has a borehole expansion bottom 1; the dewatering well 2 is arranged in the borehole, and has a well pipe 3 and an anti-rooted water filter pipe connected to the bottom of the well pipe 3 4. The anti-root-shaped water filter pipe 4 is located at the bottom of the drilled hole 1. The anti-tree-root-shaped water filter pipe 4 is composed of the main filter pipe 5 and the multi-piece that is connected to the main filter pipe 5 and can be opened and closed relative to the main filter pipe 5. A branch filter pipe 6 is formed, and the branch filter pipe 6 communicates with the main filter pipe 5 when opened (the two realize hydraulic connection).

[0038] In this embodiment, the drilling bottom expansion technology adopts the rela...

Embodiment approach

[0039]In this example, the main filter pipe 5 and the branch filter pipe 6 can choose ordinary bridge-type water filter pipes, the main filter pipe 5 is connected with the branch filter pipe 6 through the ball valve mechanism 7, and the branch filter pipe 6 is driven by the opening and closing transmission mechanism relative to the The main filter pipe 5 is opened and closed. Wherein, the ball valve mechanism 7 comprises a spherical housing 11 and a solid ball 10 rotatably arranged in the spherical housing 11, the spherical housing 11 is fixed on the main filter pipe 5, the bottom end of the branch filter pipe 6 is connected with the ball valve mechanism 7, and It can rotate synchronously with the solid ball 10, and the spherical shell 11 is provided with two spherical shell openings 13 respectively connected with the main filter pipe 5 and the branch filter pipe 6, and the solid ball 10 is provided with a through hole 12. When the filter tube 6 is opened, the hole 12 in the s...

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Abstract

The invention relates to a well point dewatering device, in particular to a ball-valve-connected reversed-tree-root-shaped water filtering pipe type dewatering well and method for a drilling expandedbase. The water filtering pipe type dewatering well comprises a drilling hole and a dewatering well body, wherein the bottom of the drilling hole is provided with a drilling expanded base; the dewatering well body is arranged in the drilling hole and provided with a well pipe and a reverse-tree-root-shaped water filtering pipe connected to the lower portion of the well pipe, the reverse-tree-root-shaped water filtering pipe is located at the drilling expanded base, the reverse-tree-root-shaped water filtering pipe is composed of a main filtering pipe and a plurality of branch filtering pipes which are connected to the main filtering pipe and can be opened and closed relative to the main filtering pipe, and the branch filtering pipes communicate with the main filtering pipe during opening.According to the ball-valve-connected reversed-tree-root-shaped water filtering pipe type dewatering well, compared with the prior art, the area of the water inlet section of the filtering pipe is increased, the water inlet mode is improved, and underground water is drained from the dewatering well helpfully.

Description

technical field [0001] The invention belongs to the technical fields of geological engineering, geotechnical engineering and underground engineering, and relates to a dewatering device at a well point, in particular to a dewatering well and a method for connecting a ball valve to an anti-tree-shaped water filter pipe used for drilling bottom expansion. Background technique [0002] In the construction environment with a relatively high groundwater level, dewatering at the well point is an important technical measure in the construction of earthworks, foundations and foundation works. It can reduce the lateral displacement and settlement of the slope soil, stabilize the slope, eliminate quicksand, reduce the uplift of the base soil, so that the foundation and foundation engineering construction below the natural groundwater can avoid the influence of groundwater, provide relatively dry construction conditions, and It can reduce the amount of earthwork, shorten the constructio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/10E02D19/06E21B7/28E21B10/32
CPCE02D19/06E02D19/10E21B7/28E21B10/32
Inventor 王建秀薛睿刘笑天何倩倩龙冠宏武昭徐娜
Owner TONGJI UNIV