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A simple pressure chamber model of mud-water shield and its application method

A mud-water shield and pressure chamber technology, which is used in measuring devices, suspension and porous material analysis, instruments, etc., can solve problems such as uneconomical, and achieve the effect of convenient pressure setting and simple operation.

Active Publication Date: 2018-01-09
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is not only uneconomical to test the air-tightness of the mud film on site, but also has great risks.

Method used

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  • A simple pressure chamber model of mud-water shield and its application method
  • A simple pressure chamber model of mud-water shield and its application method
  • A simple pressure chamber model of mud-water shield and its application method

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Embodiment Construction

[0031] In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries shoul...

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Abstract

The invention discloses a simple pressure tank model of a slurry shield and a use method thereof. The model comprises an organic glass tube; the bottom is connected with a water collecting device; a middle partition divides a tube body into two parts, the top is connected with an air compressor through a pressure stabilizing valve, the organic glass tube at the lower part is used for simulating a slurry tank of the slurry shield, and the organic glass tube at the upper part is used for simulating a pressure tank of the slurry shield. The use method of the simple pressure tank model comprises the following steps: arranging a test stratum in the organic glass tube at the lower part and reversely filling water to reach saturation; filling slurry to a certain height; providing air pressure for the organic glass tube; horizontally placing the organic glass tube; adjusting an air pressure value in the organic glass tube to experimental air pressure, opening a communicating hole valve on the partition, so as to enable compressed air in the pressure tank to enter the slurry tank and enable slurry in the slurry tank to gradually enter the pressure tank till the slurry levels of the two model tanks are flush with each other. The simple pressure tank model disclosed by the invention is a simple and feasible device for indoor stimulation of excavation surface slurry film-forming when slurry shield tunneling and tank opening under pressure are performed under complex conditions as well as a slurry film air tightness test.

Description

technical field [0001] The invention belongs to the field of underground engineering, and in particular relates to a simple pressure chamber model of mud-water shield and its application method. Background technique [0002] Most of the underwater tunnels built by the shield tunneling method in my country will pass through high-permeability, high-quartz-content sand and pebbles and other strata. They often encounter serious wear on the cutter head of the shield machine, cake formation on the cutter head and obstacles, etc., and they are forced to stop Carry out operations such as opening and cleaning or repairing. Due to the influence of rivers, lakes and other waters, structures or other reasons in the upper part of the tunnel, the method of strengthening the stratum from the surface - opening the cabin under normal pressure is limited, and the method of opening the cabin under pressure based on the compressed air method is widely used. Conventional air compression method i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
CPCG01N15/082
Inventor 朱伟闵凡路张宁钱勇进杜瑞徐静波
Owner HOHAI UNIV
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