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Dynamic detection device for water pressure resistance of shield tail sealing grease

A shield tail seal and dynamic detection technology, which is applied in the direction of measuring devices, using stable tension/pressure to test the strength and strength characteristics of materials, etc., can solve the threat of safe excavation of shield tunnels, the quality of shield tail seal grease is uneven, testing and evaluation Inconsistency and other problems to achieve the effect of ensuring construction safety

Pending Publication Date: 2018-12-21
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0004] At present, the existing technology has not yet formed a unified standard for testing the water pressure resistance of shield tail sealing grease, and only some enterprises and organizations have conducted evaluations. The testing devices and methods for the water pressure resistance of shield tail sealing grease are relatively simple, and The tests and evaluations of all parties are not consistent, and there is a lack of standardized analysis of the oil’s water pressure resistance performance. structure security tunneling poses a threat

Method used

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  • Dynamic detection device for water pressure resistance of shield tail sealing grease

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Embodiment Construction

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0023] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The invention provides a dynamic detection device for water pressure resistance of shield tail sealing grease. The dynamic detection device comprises a sealing cylinder, a top guide sleeve, a bottom guide sleeve, a piston rod, an electric push rod, a metal net, a top plate and a bottom plate, wherein the top guide sleeve and the bottom guide sleeve are used for sealing the top and the bottom of the sealing cylinder; the piston rod penetrates through the sealing cylinder through the top guide sleeve and the bottom guide sleeve; one end of the piston rod is connected with the electric push rod;the metal net is arranged at the bottom of the sealing cylinder, and the shield tail sealing grease is laid on the metal net; water is added to the surface of the shield tail sealing grease, the top guide sleeve is tightened, and gas is introduced into the sealing cylinder; and then the piston rod is pushed through the electric push rod, the water leakage condition at the bottom of the sealing cylinder is observed, and the water pressure resistance of the shield tail sealing grease is judged. The device can be used for qualitatively comparing the water pressure resistance of different shield tail sealing grease, as well as quantitatively analyzing the highest water pressure resistance value of the shield tail sealing grease, thereby providing a basis for shield tail sealing design and construction in a shield tunnel.

Description

technical field [0001] The invention relates to the technical field of testing the water pressure resistance sealing performance of grease, in particular to a dynamic detection device for the water pressure resistance of shield tail sealing grease. Background technique [0002] At present, in the field of engineering, the development of tunnel and underground engineering is rapid, and the shield tunneling method has become the most ideal construction method under complex geological conditions due to its advantages of less environmental restrictions and less impact on the environment. Shield tail sealing is an important part of shield tunneling safety and is of great significance. However, it is a great challenge to ensure good sealing performance of the shield tail in complex construction environments such as high water pressure. [0003] Shield tail sealing grease is an important material for shield tail sealing. It is used to fill the gap between shield tail wire brushes. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12
CPCG01N3/12G01N2203/0048
Inventor 袁大军沈翔高振峰李兴高吴俊金大龙许亚楼王旭阳曹赛赛金慧
Owner BEIJING JIAOTONG UNIV
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