Test equipment for simulating collapse of rock mass

Abstract

The invention belongs to the field of rock mass dynamics indoor tests, and particularly relates to test equipment for simulating collapse of rock mass. The test equipment aims to bring convenience formeasuring the collapse failure critical slope gradient of the rock mass or further measuring the horizontal movement distances of the rock mass with different degrees of roughness. The test equipmentcomprises a rock mass collapse simulation device, a slope gradient adjustment device and a rock mass collapse monitoring device. The rock mass collapse simulation device at least comprises a slope surface roughness simulation plate, and the rock mass can slide on the slope surface roughness simulation plate after collapsing; the slope gradient adjustment device is used for adjusting the slope gradient alpha of the slope surface roughness simulation plate relative to horizontal planes; the rock mass collapse monitoring device is at least used for measuring values of the slope gradient alpha when the rock mass starts to slide along the slope surface roughness simulation plate under the gravitational effects. The test equipment has the advantages that the collapse failure critical slope gradient of the rock mass can be conveniently measured by the test equipment; the test equipment in certain examples further can be provided with different types of slope surface roughness simulation plates, accordingly, collapse procedures of the rock mass R with the different degrees of roughness can be simulated, and relations between the horizontal movement distances of the rock mass R and the roughness of slopes can be obtained.

Description

technical field [0001] The invention belongs to the laboratory field of rock mass dynamics, and in particular relates to a test device for simulating rock mass collapse. Background technique [0002] A slope is a geological body with a lateral free surface on the surface of the crust, consisting of a slope crest, a slope surface, a slope foot, and a slope body within a certain depth below it. Slopes can be divided into rocky slopes, soil slopes and earth-rock mixture slopes according to stratum lithology. Among them, geological disasters such as collapses, landslides, and debris flows often occur on rocky slopes under natural conditions. Collapse is known for its fast speed and high frequency, and its stability is one of the classic problems in the fields of engineering geology and rock mechanics. The critical slope of rock mass collapse and the horizontal movement distance of the collapsed rock mass have become important issues that have been concerned by the scientific a...

AI Technical Summary

Problems solved by technology

Numerical simulation can be divided into two parts: regional collapse simulation and single-body collapse simulation. Among them, in the single-body collapse simulation, it is difficult to accurately obtain relevant mechanical parameters such as cohesion and internal friction angle of the rock mass, resulting in uncertain simulation results. sex

In the laboratory test simulation, the critical slope of rock mass collapse failure can be measured by shear test, but it has the disadvantage of size effect, and the relationship between the collapse slope and the horizontal movement distance of the collapsed rock mass cannot be determined

To sum up, neither the numerical simulation nor the laboratory test simulation can accurately give the critical slope of rock mass collapse failure under natural conditions, and the relationship between different slope roughness and the horizontal movement distance of the collapsed rock mass

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