Underground cavern similarity simulation testing system

Abstract

The invention discloses an underground cavern similarity simulation testing system, comprising a shell a sample bearing platform arranged in the shell, a temperature regulating and controlling system capable of changing the temperature value of a sample and a loading system used for applying load onto the sample at different temperature values. The temperature regulating and controlling system comprises a heating member arranged in the shell and used for heating the sample and a temperature sensor arranged in the shell and used for detecting the temperature of the sample. With the temperature regulating and controlling system, an underground cavern simulation sample can reach different temperature values; loading of the sample can be carried out at different temperature values, respectively; thus, the situation of load and deformation of the sample at different temperature values can be acquired. The underground cavern similarity simulation testing system can authentically simulate the characteristics of the load and deformation of surrounding rocks of tunnel excavation projects or other underground caverns under the influence of different temperatures, is capable of accurately reflecting actual situations and has good application prospects in testing of the deformation, load and the like of caverns.

Description

technical field [0001] The invention relates to the field of rock and soil, in particular to an underground cavern similar simulation test system. Background technique [0002] Due to the diversity of geological conditions, the excavation of tunnel engineering has high complexity. Before the excavation of the cavern, in order to predict the damage of the surrounding rock of the cavern wall, it is necessary to carry out the cavern simulation experiment. Simulation experiments can provide reasonable parameters for the establishment of numerical calculation models and reliable comparison and reference for the structure of numerical simulations. Existing cavern simulation experiments mainly collect data of inner wall deformation to predict the stress and deformation of tunnels or caverns, and this kind of simulation experiment mainly conducts cavern simulation experiments at normal temperature, and high temperature experiments are only for a single rock There is no experiment c...

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Problems solved by technology

Existing cavern simulation experiments mainly collect data of inner wall deformation to predict the stress and deformation of tunnels or caverns, and this kind of simulation experiment mainly conducts cavern simulation experiments at normal temperature, and high temperature experiments are only for a single rock There is no experiment conducted on a similar model of rock underground caverns under the influence of temperature effects; moreover, fire prevention and control in tunnels is a major difficulty now, and the temperature in the tunnel will rise sharply after a fire occurs, so the influence of temperature effects should be studied necessary

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