Hydro-thermal coupling model test box

Abstract

The invention relates to the field of hydro-thermal coupling tests and relates to a hydro-thermal coupling model test box. The hydro-thermal coupling model test box comprises a test box, a test box cover arranged in the test box, and a thermal insulation material layer arranged on the opposite side walls of the test box; the test box is internally provided with a double-layer freezing pipe group which enables a liquid inlet and a liquid outlet of cold liquid to be adjacent to each other and to be located on the outer surface of a soil body; a plurality of groups of spring steel bars mounted inthe soil are arranged in the test box; the spring steel bars are provided with strain gauges for indirectly acquiring the strain data of the soil body; a plurality of groups of soil pressure sensorsare arranged on the test box; a pneumatic C-type quick connector concave head and a pneumatic C-type quick connector convex head are adopted; and the connection or disconnection of a pipeline can be realized only by inserting or pulling out the convex connector into or from the concave connector, so that the influence of time-sharing freezing or time-sharing freezing stopping on a freezing effectis studied.

Description

technical field [0001] The invention relates to the field of hydrothermal coupling test, in particular to a hydrothermal coupling model test box. Background technique [0002] The artificial freezing method is more and more widely used in underground engineering, especially in complex underground conditions. In freezing engineering, there are often problems such as groundwater, complex soil layers, and complex stress conditions. Therefore, it is useful to carry out relevant model test research. Very important practical significance, but there is no large-scale relevant model test equipment that can simultaneously consider hydrothermal coupling. Contents of the invention [0003] In order to solve the above problems, the present invention proposes a hydrothermal-mechanical coupling model test box, which can simulate key issues such as soil freezing temperature field, frost heaving force, stress, strain, and melting settlement under complex conditions. The operation process...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, the present invention proposes a hydrothermal-mechanical coupling model test box, which can simulate key issues such as soil freezing temperature field, frost heaving force, stress, strain, and melting settlement under complex conditions. The operation process shortens the test time and saves the test cost

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