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Pump-in test equipment

A pressurized water test and equipment technology, which is applied in the field of foundation soil survey, construction, infrastructure engineering, etc., can solve the problems of high cost and low efficiency

Pending Publication Date: 2018-10-16
深圳市水务规划设计院股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The pressure water test equipment disclosed by the present invention aims to solve the problems of low efficiency and high cost of the existing pressure water test equipment

Method used

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Embodiment Construction

[0029] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0030] The invention provides a pressure water test equipment, such as Figure 1-Figure 3 As shown, it includes a core tube 1 , a capsule 2 sleeved on the surface of the core tube 1 , and a drill rod 3 fixedly connected to the core tube 1 . Wherein, the bottom of the core tube 1 is provided with a detachable plug 10 for sealing the bottom of the core tube 1 to avoid water leakage, and the core tube 1 can slide relative to the capsule 2 along its axial direction. The part of the core tube 1 located inside the capsule 2 is provided with a water injection port 11 for injecting water into the capsule 2 .

[0031] Two capsules 2 are arranged at intervals along the axial direction of the core tube 1, and the structures of the two capsules 2 are the same. , such as rubber skin. The capsule 2 is provided with a water-filled chamber 21 ...

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Abstract

The invention discloses pump-in test equipment. The pump-in test equipment comprises a core pipe, and capsules sleeving the surface of the core pipe, and the capsules and the core pipe can relativelyslide. Each capsule is provided with a water filling cavity and a pump-in cavity, each pump-in cavity is provided with a water outlet, and a water stopping plug is arranged on the water outlet of thecapsule below. Water filling openings for filling the water filling cavities and the pump-in cavities with water are formed in the surface of the core pipe, and an end cap is arranged at the bottom ofthe core pipe. According to the pump-in equipment, the core pipe is pressed down and lifted up, and therefore water channels in the capsules are controlled to change, one pipeline controls switchingof capsule water filling, pump-in cavity water pumping, capsule water releasing and other actions at the same time, and the problem of pipeline winding caused by laying of multiple pipelines is avoided; and equipment investment and cost are reduced, and the effect is improved. A whole hole can be randomly segmented for a pump-in test after hole ending, multiple segments of tests are continuously carried out, and cross interference with drilling is avoided; and repeated lifting and drilling are reduced, the effect is greatly improved, and cost is reduced.

Description

technical field [0001] The invention relates to the field of water conservancy, in particular to a pressurized water test equipment. Background technique [0002] Before the construction of water conservancy facilities, it is necessary to use pressure water test to explore the foundation, and determine the corresponding anti-seepage measures according to the exploration results. The water pressure test is an in-situ test that uses high pressure to press water into the borehole, and calculates the development of cracks in the rock mass and water permeability according to the water absorption of the rock mass. Pressurized water test is to isolate a certain length of drilling test section with special water-stop equipment, and then use a fixed water head to press water into this section of drilling. The water penetrates into the rock through the cracks around the hole wall, and finally penetrates. The amount of water will tend to a stable value. According to the pressurized w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D1/00
CPCE02D1/027
Inventor 刘士虎刘晓文杨世平夏钊
Owner 深圳市水务规划设计院股份有限公司
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