Test model and method for simulating rock mass structure deformation damage under local rock mass degradation condition

Abstract

The invention relates to a test model and method for simulating rock mass structure deformation damage under a local rock mass degradation condition. The test model comprises a degradable rock mass made of a variable temperature similar material, wherein the degradable rock mass is provided with a carbon fiber heating system and an optical fiber temperature measurement system; the optical fiber temperature measurement system is used for collecting, processing and displaying the temperature of the degradable rock mass and adjusting the opening or closing of the carbon fiber heating system; and the carbon fiber heating system is used for degrading the variable-temperature similar material through temperature rise and controlling the degradation degree of the degradable rock mass. The property that the mechanical property of the variable-temperature similar material is degraded along with temperature rise is utilized, and controllable degradation of the material in the local area of the test model is achieved; and the carbon fiber heating system and the optical fiber temperature measuring system are combined, so that the control of the test of the local rock mass deterioration degree is more accurate, and the test can be effectively and stably carried out.

Description

technical field [0001] The invention relates to the technical field of rock mass structure deformation tests, in particular to a test model and method for simulating the deformation and damage of rock mass structures under the condition of local rock mass deterioration. Background technique [0002] Based on the conventional geomechanics model, the structural deformation of rock mass under the condition of local rock mass deterioration is studied. For example: Simulate the structural deformation of the slope under the condition of rock mass deterioration at the slope foot of the slope; simulate the structural deformation of the surrounding rock under the condition of the surrounding rock loose circle deterioration. Generally, a combination of temperature-changing similar materials and ordinary similar materials is used to make a physical model of rock mass structure, and a temperature control system for the local temperature rise of the model is developed. The characteristic...

AI Technical Summary

Problems solved by technology

Generally speaking, for the study of structural deformation and failure of rock mass, internal factors such as geometric characteristics of rock mass structure, structural surface distribution, rock / structural surface mechanical parameters, and external factors such as excavation and unloading, groundwater, and earthquake vibration are more considered. There are few studies on the deformation and failure mechanism of rock mass under local deterioration conditions

[0003] As far as the traditional rock mass temperature monitoring method is concerned, the thermocouple thermometer can directly measure the temperature, the measurable temperature range is wide, and its linearity is good, but its uniformity is poor; the thermal resistance thermometer has high measurement accuracy and stable performance, and is mainly used for Monitoring of medium and low temperature ambient temperature

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