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External water pressure testing device and method for water-rich karst tunnel lining

A pressure test and water pressure technology, applied in the direction of measuring device, safety device, measuring fluid pressure, etc., can solve the problems of water pressure testing device and method outside the lining structure of water-rich karst tunnel, etc., and achieve convenient application and design. Reasonable and reliable results

Inactive Publication Date: 2015-12-23
CHONGQING UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no test device and method for the external water pressure of the lining structure of the water-rich karst tunnel in the relevant domestic codes or test procedures.

Method used

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  • External water pressure testing device and method for water-rich karst tunnel lining
  • External water pressure testing device and method for water-rich karst tunnel lining

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Embodiment Construction

[0024] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] figure 1 It is a schematic diagram of the external water pressure test device for the test section. As shown in the figure, the device includes a drainage device, an external water pressure measurement device and a switch device;

[0026] The drainage device is composed of a connecting joint 1 and a horizontal water guide pipe 2; the external water pressure measuring device is composed of a tee joint 3, a connecting pipe 4, and a water pressure gauge 5; the switch device is composed of a flanged ball valve 6;

[0027] The connection joint 1 is connected with the horizontal water guide pipe 2, the horizontal water guide pipe 2 is connected with one end of the tee joint 3, the middle end of the tee joint 3 is connected with the water pressure gauge 5 through the communication pipe 4, and the other end of the tee joint 3 is connected wi...

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Abstract

The invention relates to an external water pressure testing device and method for a water-rich karst tunnel lining and belongs to the technical field of tunnel engineering. The external water pressure testing device comprises a drainage device, an external water pressure measuring device and a switching device, wherein the drainage device consists of an internally-threaded attachment joint and a steel transverse water manifold; the external water pressure measuring device consists of a three-way joint, a communicating pipe and a water pressure gauge; the switching device consists of a flange ball valve; the attachment joint is connected with the transverse water manifold; the transverse water manifold is connected with one end of the three-way joint; the intermediate end of the three-way joint is connected with the water pressure gauge through the communicating pipe; and the third end of the three-way joint is connected with the flange ball valve through the transverse water manifold. The external water pressure testing device is reasonable in design, the testing method is reliable, the application is convenient, the external water pressure of the water-rich karst tunnel lining can be effectively measured, particularly, the maximal water pressure value generated at the back of the lining due to the failure of a drain hole during operation of a water-rich karst tunnel can be tested, and accordingly main references are provided for both the design of a tunnel lining structure and selection of an opportunity to dredge crystals at the drain hole during operation.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and relates to a water-rich karst tunnel lining external water pressure testing device and a testing method, in particular to a water-rich karst tunnel lining external water pressure testing device and lining external water under different drainage hole failure section lengths Stress testing method. Background technique [0002] Traffic engineering is an important infrastructure of the country and occupies a very important position in the development of the national economy. In the Yunnan, Guizhou, and Sichuan regions, the administrative divisions of many cities are divided by mountains. In order to speed up the flow of people and goods between urban areas and relieve the pressure on urban public transport, it is necessary to build a large number of inter-urban traffic tunnels in mountainous areas, including road tunnels, railway tunnels, and subway tunnels. However, the tunnel sites...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/02G01L11/00
Inventor 钟祖良刘新荣易立成盛刘坤
Owner CHONGQING UNIV
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