Side slope instability experiment device and method with rainfall and overload as inducements

Abstract

The invention discloses a side slope instability experiment device and method with rainfall and overload as inducements. The side slope instability experiment device is composed of a model box, a sideslope model, a rainfall simulation device, an overload simulation device, a side slope inclination device and a monitoring system. The side slope model is arranged in the model box body, and the model box body is a transparent cuboid with an upper opening. The rainfall simulation device transmits water flow to the water supply main pipe through the water inlet pipe, the water supply main pipe isconnected with the top branch pipe, and the water flow circulates in the rainfall pipe network and is sprayed to the slope model through the rainfall nozzle. The overload simulation device simulates the overload of the slope top surface through the follow-up loading device and changes the stress position of the slope top surface through the sliding block. The side slope inclination device comprises a supporting base and a jacking device. And the monitoring system obtains related data through the tester and the reading instrument and the related data is processed by the computer terminal. The experimental device can ideally simulate and monitor the deformation instability of the slope under the coupling condition of the rainfall infiltration effect and the overload additional stress effect.

Description

technical field [0001] The present invention relates to an experimental device and method for slope instability induced by rainfall and overload, which is mainly used for simulating the experimental research of slope instability, that is, for exploring the coupling of rainfall infiltration effect and overload additional stress effect of slope Deformation instability under conditions, monitoring the relationship between the pore water pressure, matrix suction and water content of the rock and soil inside the slope under the rainfall state, as well as the formation of the stress and strain state and the change over time under the overload state It can provide a theoretical basis for the stability analysis and disaster prevention of various slopes, and belongs to the field of geotechnical engineering experimental devices. Background technique [0002] The area of ​​mountains and plateaus accounts for about 70% of the total land area, and there are many artificial slopes excavat...

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Problems solved by technology

The instability of the slope will affect the project quality and construction progress at the slightest, and cause casualties and great losses to the national economy at the worst.

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