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Test simulating device and method for simulating structural cracks of underground engineering under high water pressure condition

A technology for underground engineering and crack testing, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve problems such as reducing the economics of leakage plugging projects, insufficient leakage plugging reinforcement measures, and repeated leakage.

Active Publication Date: 2018-08-21
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using empirical design method, it is easy to cause leakage plugging and reinforcement measures not in place, resulting in the problem of repeated leakage; on the other hand, one-sided pursuit of reliability will cause waste of materials and reduce the economical efficiency of the plugging project

Method used

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  • Test simulating device and method for simulating structural cracks of underground engineering under high water pressure condition
  • Test simulating device and method for simulating structural cracks of underground engineering under high water pressure condition
  • Test simulating device and method for simulating structural cracks of underground engineering under high water pressure condition

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Embodiment 1

[0073] The embodiment of the present invention provides a structural crack test simulation device and method for underground engineering under high water pressure conditions. Test pieces are prepared according to the actual conditions of the project, and the pressure supply device and water supply device are used to simulate the actual engineering environment. Carry out the limit test and durability test of the concrete plugging technology construction on the test piece sealing replacement device, so as to realize the quantitative evaluation of the effect and durability of the plugging technology.

[0074] One aspect of the embodiments of the present invention provides a structural crack test simulation device for underground engineering under high water pressure conditions.

[0075] The embodiment of the present invention provides a structural crack test simulation device for underground engineering under high water pressure conditions such as figure 1 As shown, the device includes...

Embodiment 2

[0136] This embodiment provides a structural crack test simulation device for underground engineering under high water pressure conditions. The device includes: a pressure supply device, a water supply device, a test piece sealing replacement device, and a test piece. The specific implementation structure is as follows Figure 1-8 As shown, the specific content of the component is as follows:

[0137] The pressure supply device is mainly composed of a high pressure gas source, a pressure regulating device and a gas supply pipeline. The high pressure gas source is compressed gas. The compressed gas supply method is an air compressor or a compressed gas cylinder. The pressure regulating device is a precision pressure regulating valve. The air compressor is a general-purpose small electric movable automatic control air compressor, and its supply pressure range is: 0.6 to 1.0 MPa. The compressed gas cylinder is required to be safe and reliable. The gas in the cylinder is mostly econo...

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Abstract

An embodiment of the invention provides a test simulating device and method for simulating structural cracks of underground engineering under a high water pressure condition. The device comprises a pressure supply device, a water supply device, a test piece sealing replacement device and a test piece, wherein the pressure supply device is connected with the water supply device, the water supply device is connected with the test piece sealing replacement device, and the test piece is placed in a test piece sealing replacement device for an experiment; gas in the pressure supply device enters the water supply device to drive water in the water supply device to form water pressure to enter the test piece sealing replacement device, the environment where the test piece is located is simulated,an ultimate test or a durability test is conducted on the test piece, and a plugging method for plugging construction of the test piece is quantitatively evaluated. The device is simple in structureand reasonable in design and can conduct durability tests and ultimate tests on a plugging material for underground structural cracks, accurately simulate various working conditions of underground structures under the high water pressure, effectively detect the effects of crack plugging measures and quantitatively determine the capacity of different plugging measures for resisting the pressure ofunderground water outside structures.

Description

Technical field [0001] The invention relates to the technical field of tunnel engineering tests, in particular to a structural crack test simulation device and method for underground engineering under high water pressure conditions. Background technique [0002] Water seepage is one of the most common diseases in underground engineering. China has a vast territory. With the vigorous development of transportation, it has become the country with the largest number of tunnel construction and operation in the world. At the same time, the development of urban infrastructure construction, the number of underground garages, cross-street passages, underground commercial streets, municipal pipelines, etc. It is also increasing. However, in the operation and use of new and existing underground projects, a large part of them have different degrees of water leakage. Leakage problems in underground engineering will cause the internal dampness of the engineering structure, restricting the us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12
Inventor 陈铁林廖晓东程少振张群王泽军陶文斌
Owner BEIJING JIAOTONG UNIV