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Coastal soft soil iron connection channel freezing method interface effect test simulation method

A technology of connection channel and interface effect, applied in the field of interface effect research of subway connection channel freezing method construction, can solve problems such as inability to study interface effect, achieve multi-dimensional monitoring, improve test accuracy, and simple operation.

Inactive Publication Date: 2021-11-23
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiency that the existing freezing method model test equipment cannot study the interface effect of the freezing method construction, the present invention provides a simulation system and method for the interface effect test simulation system and method of the freezing method of the subway communication channel in coastal soft soil, which can effectively avoid the existing test equipment. insufficient

Method used

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  • Coastal soft soil iron connection channel freezing method interface effect test simulation method
  • Coastal soft soil iron connection channel freezing method interface effect test simulation method
  • Coastal soft soil iron connection channel freezing method interface effect test simulation method

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Experimental program
Comparison scheme
Effect test

Embodiment

[0091] 1. The outer diameter of the freeze-thaw model box 210 is 1000mm×1000mm×1000mm, and the box wall thickness is 51.5mm. Both sides of the hollow splint are also equipped with a freezing liquid return hose 101 and a freezing liquid outlet hose 106 respectively. Two water separators 104 are fixed on the same two sides of the freeze-thaw model box 210 as the flexible pipes, and a total of eight freezing pipes 103 are arranged in a regular octagon and fixed on the water separators.

[0092] 2. Design a tunnel model pipe made of copper sheet 209 with an outer diameter of 10cm and a wall thickness of 5mm. Divide it vertically into three equal sections:

[0093] The first section is section A, which is insulated with thermal insulation foam 207, and the foam is arranged on the side wall of the tunnel with glue to simulate the wrapping insulation foam steel pipe sheet-soil interface.

[0094] Section B adopts thermal insulation coating 208 for thermal insulation, and the coatin...

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Abstract

A coastal soft soil iron connection channel freezing method interface effect test simulation method is characterized by comprising the following three processes: 1, a building step; 2, an interface simulation step; 3, a refrigeration and soil body freezing step; and 4, a soil body change detection and research step. An IDS ground penetrating radar (304) is used for scanning and monitoring the geological condition of a soil body (212) of the freeze-thaw model box (210) in a test period, and data obtained by the ground penetrating radar and monitoring data of the temperature measuring system and the strain gauge system are mutually verified.

Description

technical field [0001] The invention belongs to the field of subway tunnels, and relates to a test and simulation of the interface effect of the freezing method of the subway communication channel in coastal soft soil, and is suitable for the research on the construction interface effect of the freezing method of the subway communication channel. Background technique [0002] In recent years, with the continuous advancement of urbanization, the construction of subway tunnels has been particularly rapid. Among them, the communication channel, as a channel for communication, drainage and fire protection, also shows its unique status in the construction. Usually, before the excavation of the communication channel, the ground needs to be reinforced. The common reinforcement methods include the ground reinforcement method, the grouting reinforcement method in the tunnel and the freezing reinforcement method. As a common method, freezing reinforcement method has been widely appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00G01N25/16G01N25/20
CPCG01N25/00G01N25/16G01N25/20
Inventor 邹宝平胡波李晓泉罗战友夏建中易觉范秀江詹海鸿牟军东姜叶翔赵胜利陈明李强邓沿生孔勃文赵昕陈其志
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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