Test device and method for the influence of water level fluctuation on the stability of the rock pile slope in the underlying ice layer

Abstract

The invention relates to a physical model test model and test method of reservoir water level fluctuations on deformation of talus slope containing an underlying ice layer. The physical model test model comprises a transparent model test box with an opening at the top, wherein concrete bed rock is arranged in the transparent model test box, a faucet is arranged at the horizontal lowest end of the upper surface of the concrete bed rock, a talus slope model is arranged on the upper surface of the concrete bed rock, a plurality of electric heating pieces and a plurality of refrigerating sheets are arranged between the talus slope model and the concrete bed rock, a loading device and soil pressure boxes are arranged at the horizontal highest end of the concrete bed rock, multiple dial gages are arranged on the upper surface of the talus slope model, and a high-speed camera is arranged outside the transparent model test box. Since water level fluctuations can influence the talus slope containing the underlying ice layer, a simulation test is performed by arranging the concrete bed rock and the talus slope model in the transparent model test box through the soil pressure boxes and the dial gages used for measurement.

Description

technical field [0001] The invention relates to a physical model test model and test method for the deformation of the underlying ice-bed rock pile slope caused by reservoir water level fluctuations, belonging to the fields of civil engineering and geological engineering, and in particular to the stability of the underlying ice-layer rock pile slope caused by reservoir water level fluctuations This test method is applicable to the stability analysis and research of reservoir-type rock pile slopes with underlying ice layers in Liaoning and other northeast regions of my country. Background technique [0002] Rock piles refer to the loose accumulations formed by the instability of steep rock slopes, resulting in landslides and spalling, forming rock blocks and debris of different sizes, which are transported and accumulated under the action of natural forces. Rock piles have the characteristics of developed voids, loose structures, and poor stability. They are usually in a criti...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a physical model test model and test method for the deformation of the underlying ice layer rock pile slope by reservoir water level fluctuations, which can improve the existing physical simulation experiments that consider few working conditions and cannot simulate the northern region. Underlying ice landslides are also not suitable for carrying out model tests in winter in the northern region. Issues such as the impact of reservoir-type rock pile slopes including the local melting of the underlying ice layer on rock pile slopes caused by reservoir water storage are not considered, and it is easy to operate. It is highly targeted, can accurately measure the deformation and soil pressure changes of rock pile slopes, and can directly observe the slope deformation, damage and ice melting state, etc. A feasible device and method is of great significance to guide the follow-up rock pile engineering treatment

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