Visualization system for simulating the deformation of deep roadway under the action of groundwater freeze-thaw cycle

Abstract

The invention belongs to the field of geotechnical engineering tests, and aims to solve the problem that the visual detection of deformation of deep roadways under the action of freeze-thaw cycles of water systems cannot be realized in simulation tests, and specifically relates to a visualization system for simulating deformation of deep roadways under the action of freeze-thaw cycles of groundwater, including High-energy accelerator CT detection system, test chamber system, temperature control system, water system simulation system and PET detection system, among which, the high-energy accelerator CT detection system is used to scan and detect the three-dimensional shape of cracks in the test piece; the temperature control system is used to simulate the freeze-thaw cycle environment ; The water system simulation system is used to transport liquid to simulate the water system channel; the PET detection system is used to detect the migration dynamics of seepage in the cracks of the specimen under the action of freeze-thaw cycles. Through the visual detection of the deformation process of the roadway in the present invention, the accurate detection of the development and expansion of cracks in the tunnel surrounding rock under the action of freeze-thaw cycles can be realized, and the deformation state of the tunnel surrounding rock corresponding to the set water system position and temperature parameters can be obtained. Provide reliable parameters.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering tests, and in particular relates to a visualization system for simulating the deformation of deep tunnels under the action of freeze-thaw cycles of groundwater. Background technique [0002] During and after the construction of a large number of existing tunnels, they are faced with the prediction and maintenance of the stress deformation caused by the development of underground water system, high ground stress, and low temperature environment; the special environment on the site and other factors cannot be quantitatively analyzed in different freezing and thawing environments. , Water systems in different locations evaluate the deformation of rock mass and the development and expansion of fractures. Model test technology is an important means to study large-scale tunnel engineering problems in rock and soil. It can qualitatively or quantitatively study the stress and deformation characteri...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem that the visual detection of deep roadway deformation under the action of groundwater freeze-thaw cycle cannot be realized in the simulation test, the present invention provides a visualization method for simulating the deformation of deep roadway under the action of groundwater freeze-thaw cycle The system includes a high-energy accelerator CT detection system, a test chamber system, a temperature control system, a water system simulation system, and a PET detection system. The high-energy accelerator CT detection system is used to scan and detect the three-dimensional shape of cracks in the test piece

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