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Ball valve used for drilling and expanding the bottom to connect anti-tree-rooted water filter pipe dewatering well and method

A technology for a water filter pipe and a dewatering well, which is applied in drilling equipment and methods, drilling equipment, drill bits, etc., can solve problems such as improved water intake capacity and limited water intake.

Active Publication Date: 2021-06-04
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 used for drilling and expanding the bottom to connect anti-tree-rooted water filter pipe dewatering well and method
  • Ball valve used for drilling and expanding the bottom to connect anti-tree-rooted water filter pipe dewatering well and method
  • Ball valve used for drilling and expanding the bottom to connect anti-tree-rooted water filter pipe dewatering well and method

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 casing 11 and a solid ball 10 rotatably arranged in the spherical casing 11, the spherical casing 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 soli...

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Abstract

The present invention relates to a well point dewatering device, in particular to a ball valve used for drilling bottom expansion to connect an anti-tree-shaped water filter pipe dewatering well and a method thereof. The water filter pipe dewatering well includes a borehole and a dewatering well, wherein: the bottom of the borehole The bottom of the borehole is expanded; the dewatering well is set in the borehole, and has a well pipe and an anti-root-shaped water filter pipe connected to the lower part of the well pipe. The anti-tree-root-shaped water filter pipe is located at the bottom of the borehole. The water pipe is composed of a main filter pipe and a plurality of branch filter pipes which are connected to the main filter pipe and can be opened and closed relative to the main filter pipe. The branch filter pipes communicate with the main filter pipe when opened. Compared with the prior art, the invention increases the cross-sectional area of ​​the water inlet of the filter pipe, improves the water inlet mode, and helps groundwater to be discharged from the precipitation well.

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 Patents(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