Water pressure test in borehole multichannel multiplexing rapid pressure relief device and method

A technology of pressurized water test and pressure relief device, which is applied to the multi-channel conversion quick pressure relief device for drilling pressurized water test, the pressure relief of multi-channel conversion quick pressure relief device for drilling pressurized water test, and the water stop for drilling pressurized water test In the field of embolism rapid pressure relief device, it can solve the problems of difficult pressure relief and restoration, capsule hole stuck accident, whole hole scrapping, etc., and achieves strong sealing, strong reliability and good plugging effect

CN109267961APending Publication Date: 2019-01-25CHANGJIANG SURVEY PLANNING DESIGN & RES +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-01-25

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Abstract

The invention discloses a water pressure test in borehole multichannel multiplexing rapid pressure relief device. The device comprises a lower core sleeve connector, a middle core sleeve connector, anupper core sleeve connector, an upper core pipe hole and a lower core pipe hole, wherein the upper core pipe hole and the lower core pipe hole are formed in a core pipe; a gland is arranged on the top of a core sleeve, a plug joint is arranged at the bottom of the core sleeve, a first connector communicated with the core sleeve is formed at the upper end of the plug joint, and a second connectoris arranged at the lower end of the plug joint; the upper end of the core pipe stretches upwards to be out of the gland, the lower end of the core pipe stretches downwards to be out of the core sleeveand is located in the plug joint; a sealing element is arranged between the core pipe and the core sleeve; the upper core sleeve connector, the middle core sleeve connector and the lower core sleeveconnector are arranged on the sealing element from top to bottom in sequence, and the core sleeve is provided with a core sleeve drain hole communicated with a drill hole. The device has the advantages that a pipeline device is simplified, capsule water stop is reliable, and convenience is brought to capsule rapid complete pressure relief. The invention further discloses a pressure relief method of the water pressure test in borehole multichannel multiplexing rapid pressure relief device.
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Description

technical field

[0001] The invention relates to the technical field of borehole pressure water test, more specifically, it is a multi-channel switching rapid pressure relief device for borehole pressure water test. More specifically, it is a fast pressure relief device for a water stop plug in a borehole pressurized water test suitable for the condition of large buried depth of groundwater. More specifically, it is a multi-channel conversion rapid pressure relief device for drilling water pressure tests suitable for general water pressure tests and deep hole high pressure water pressure tests of geological drilling for water conservancy and hydropower. The invention also relates to a pressure relief method of a multi-channel conversion rapid pressure relief device for a borehole pressure water test. Background technique

[0002] Borehole pressure water test is a kind of in-situ permeability test of rock mass in borehole. The main task is to measure the water permeability of...

Examples

Embodiment Construction

[0041] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation to the present invention, and are only examples. At the same time, the advantages of the present invention are clearer and easier to understand through the description.

[0042] Referring to the accompanying drawings, it can be seen that a multi-channel conversion rapid pressure relief device for drilling pressure water test includes a core tube 2, a core tube plug 11 arranged at the lower end of the core tube 2 and a core tube sleeve 5 set on the outer periphery of the core tube 2, It also includes the lower core pipe sleeve connection port 16, the middle core pipe sleeve connection port 17, the upper core pipe sleeve connection port 18 and the upper core pipe hole 15 and the lower core pipe hole 14 located on the core pipe 2; the core pipe sleeve 5 top A gland 4 is provided, and a plug joint 10 is provided...