A test instrument for simulating the immersion-air-dried rock circulation in the water-fluctuating zone of the bank slope

Abstract

A tester simulating the soaking-air drying rock cyclic action of a hydro-fluctuation belt of a reservoir bank slope comprises a test instrument shell. A cover plate is arranged on the upper portion of the shell, a base is arranged on the lower portion of the shell, the cover plate is provided with a sampling port, a deflating bolt and a water inlet pipe, the base is provided with a water outlet pipe and connected with a water tank, a water circulating system is formed by all the components, a metal water permeable plate sample bracket is arranged in the shell, and a pressure air bag is arranged in the shell and connected with a pressure control system. A temperature control heating device is arranged on the base. A dynamic water circulation control device and a static water circulation control device are arranged at the same time, a soaking-air drying circulating device is arranged, and the rise and fall changes of the water level of a reservoir and the dissolving characteristics and the scouring action of rock in a reservoir water pressure state can be simulated. Due to a simulation experiment, a reliable test data basis can be provided for research on protection of a large reservoir bank slope and geological disaster evaluation and prediction.

Description

technical field [0001] The invention relates to a water-rock interaction test device in the field of rock mechanics tests, which can be used to study the damage and deterioration of the rock mass in the water-fluctuation zone of the bank slope under the conditions of immersion-air-dry cycle, different water pressure conditions, and different temperature conditions Effects and Deterioration Mechanisms. Background technique [0002] A large number of geotechnical engineering problems require an understanding of the properties of water-rock interactions. Due to the change of the reservoir water level, the water-rock interaction of the reservoir bank slope is carried out under the condition of soaking-air-drying cycle and certain water pressure. The water-rock interaction will be affected by the soaking-air-drying cycle, water pressure and water temperature. The physical and mechanical property degradation law of reservoir bank slope rock mass under rock action will directly af...

AI Technical Summary

Problems solved by technology

At present, the research on water-rock interaction focuses on different water-containing states or short-term and long-term immersion, and seldom considers the immersion-air-drying cycle process, nor does it take into account the change of water pressure during immersion. There is a lack of an instrument to compare Good simulation of the actual occurrence environment of the rock mass in the sinking zone of the bank slope

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