A loading system for drilling high pressure water test

Abstract

The invention discloses a loading system for drilling high pressure water pressure test. The loading system includes a test chamber and a water reservoir located in the test observation hole; the test chamber and the water reservoir are connected through a water inlet pipe, and a high-pressure water pump group is housed on the water inlet pipe; the connection between the test chamber and the high-pressure water pump group A water return pipe is connected between the water inlet ends, and a pressure gauge is installed on the water return pipe. The invention improves the pipeline connection mode of the drilling high-pressure water test loading system, adds a return water pipe, and forms a double pipeline connection mode with the water inlet pipe. Adjust the pressure at the return pipe to control the water pressure value of the test chamber. When the pressure sensor is connected to test the water pressure of the test chamber, it will not be affected by the flow state of the water inlet pipe, and the loss of the water head in the pipeline is small; It is relatively safe for the drilling high-pressure water test of the design 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 ...

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 value is closer to the actual pressure of the test chamber, providing accurate data for the water pressure test of the test chamber in the high-pressure water test of the underground engineering drilling in the fields of water conservancy and hydropower projects, petroleum and nuclear waste reserves, etc.

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