Test device for simulating ecological rock mechanical slope protection under rainfall precipitation condition

Abstract

The invention relates to a device for testing ecological slope protection of ecologic rock and soil mechanics under simulated rainfall condition, which is mainly used for studying scouring (or erosion) characteristics test of rock and soil slope by artificial rainfall and belongs to the field of geotechnical engineering and environmental engineering. The test device comprises an automatic variable slope test rack, a test soil bin and a rainfall simulator with adjustable rain intensity, wherein a rotary support is composed of a guide rail, a crank, a crank brake, an upper shaft and a device for preventing backward sliding; a fixed bearing support is composed of a lower shaft, a bearing seat, a bending guide groove, a capstan and a lower shaft caging device; the rainfall simulator with adjustable rain intensity is disposed on the variable slope test race through a support and includes a rainfall simulator, a pressure sensor, a vibrator, a barometer, a relief valve, etc. The inventive test device has the advantages of simple structure, adjustable rain intensity, uniform rainfall, automatic online collection of air pressure, water pressure and rainfall amount of the rainfall simulatorand reduced time and labor force for loading the test soil bin.

Description

technical field [0001] The invention relates to an ecological rock-soil mechanical slope protection test device under simulated rainfall conditions, which is mainly used for the research on the scour (or erosion) characteristic test of rock-soil slopes by artificial rainfall, and belongs to the fields of geotechnical engineering and environmental engineering. Background technique [0002] The safety and ecological environment problems caused by exposed rock and soil slopes have become the hot and focus issues in today's environmental problems. According to statistics, since the United Nations Stockholm Environmental Protection Conference in 1972, the world has lost nearly 500 billion tons of topsoil due to soil erosion and cultivated land occupation due to engineering construction and other human factors; 10%, of which, the world emits more than 8 billion tons of carbon dioxide and sulfur compounds into the atmosphere every year, and the ozone layer has been severely damaged...

AI Technical Summary

Problems solved by technology

The existing test system fails to realize the automatic adjustment of rainfall intensity, the stability analysis under different slope conditions, and the comparative analysis of the slope body being washed (or eroded) by rainfall under the condition of vegetation.

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