Drill-hole high-pressure water pump-in test loading system

A technology of loading system and high-pressure water pressure, which is applied in earthwork drilling, measurement, wellbore/well components, etc. It can solve problems such as high water pressure and unsafety, achieve the effect of small head loss in pipelines and reduce process flow

Active Publication Date: 2014-01-22
POWERCHINA ZHONGNAN ENG
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the high water pressure measured by the existing hole high-pressure water test loading system and the lack of safety, the present invention aims to provide a drilling high-pressure water test loading system, which can make the pressure of the pressure sensor test The valu

Method used

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  • Drill-hole high-pressure water pump-in test loading system

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Embodiment Construction

[0021] A drilling high-pressure water test loading system, such as figure 1 As shown, in the test site area, the test observation hole is constructed according to the specification requirements, the test chamber 3 is sealed off by the water stop plug 2, and the high-pressure water pump group 5 is arranged at the same time. The water in the reservoir 11 sends high-pressure water flow to the lower part of the test chamber 3 through the high-pressure water pump group 5 through the water inlet pipe 4. At the same time, a return pipe 6 is set on the upper part of the test chamber 3 to control the excess water in the test chamber 3 after the pressure is adjusted by the pressure regulating ball valve 10. Carry out recycling; Install the first flow recorder and the second flow recorder at 6 places of the water pipe next to the reservoir and the return pipe respectively, and install a water pressure gauge 9 on the return pipe to measure the water pressure of the test chamber.

[0022] ...

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Abstract

The invention discloses a drill-hole high-pressure water pump-in test loading system which comprises a test cavity and a water reservoir. The test cavity is formed in a test observation hole and is communicated with the water reservoir through a water inlet pipe, a high-pressure water pump unit is mounted on the water inlet pipe, and a water return pipe is communicated between the test cavity and the high-pressure water pump unit and provided with a pressure gauge. In the drill-hole high-pressure water pump-in test loading system, pipeline connection way is modified, the water return pipe is added to be assembled into double-pipeline connection way together with the water inlet pipe. Water pressure value of the test cavity is controlled by regulating pressure of the water return pipe and is free of affection from water flow state of the water inlet pipe when water pressure of the test cavity is tested by being connected with a pressure sensor, and head loss of pipelines is low; test value is smaller than practical pressure and is safer for drill-hole high-pressure water pump-in test reaching certain set pressure value.

Description

technical field [0001] The invention relates to a drilling high-pressure water pressure test loading system, which is suitable for the loading device of the rock mass in-situ high-pressure water pressure test system for underground projects in the fields of water conservancy and hydropower projects, petroleum and nuclear waste storage, and the like. Background technique [0002] The existing drilling high-pressure water test loading system is generally connected by a single pipeline. Although the single-pipe connection method is accurate and convenient for flow testing, there is a pressure difference between the data measured by the pressure sensor and the actual pressure of the test chamber. When considering the head loss of the pipeline caused by the flow state change of the inlet pipe, the pressure difference between the two is even greater. In particular, the actual pressure of the test chamber is less than the test value, and it is difficult to accurately calculate how ...

Claims

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Application Information

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IPC IPC(8): E21B47/06
Inventor 冯树荣赵海斌翦波陈建胜钟辉亚左成荣于新华王丽新
Owner POWERCHINA ZHONGNAN ENG
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