Sweeping spraying type slope rainfall system

Abstract

The invention provides a sweeping spraying type slope rainfall system composed of a rainfall support device, a rainfall sweeping spraying control device and a rainfall waterway device. The variable-slope sweeping spraying type slope rainfall test device is used for simulated rainfall of slopes with the different slope types outdoors or indoors in geotechnical engineering, is good in rainfall uniformity, stable in water supply pressure and good in controllability, can simulate all-day continuous rainfall in a natural state, regulate and control the rainfall intensity and achieve light-rain rainfall simulation, is provided with rainfall spray heads which have the stable vertical distance to the ground and can do reciprocating motion, can simultaneously output multiple ways of water flows with the uniform and stable water pressure and is stable and downward in spray head spraying direction, convenient to disassemble, assemble and transport, capable of adjusting the slope and suitable for the double-faced slope.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering testing equipment, and in particular relates to a sweeping and spraying type slope rainfall system. Background technique [0002] Landslides are considered the third largest natural disaster in the world. In my country, according to preliminary investigations, there are more than 1,500 disastrous landslides, causing nearly 1,000 deaths per year on average, and causing direct economic losses of more than 1 billion yuan, seriously affecting the social and economic development of our country and the safety of people's lives and property. Landslide research has always been the research focus in the field of disasters, and rainfall is one of the main factors causing slope instability, and it is also an important cause of soil erosion. Carry out model tests on the deformation, failure mechanism and stability of slopes under the action of rainfall The research has very important theoret...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem that the support in the rain device in the artificial simulated rainfall system in the prior art is fixed, difficult to adjust, and does not have the function of adjusting the slope of the support under complex rainfall slope conditions such as double-sided slopes, and simulates rainfall. Poor uniformity of rainfall and weak controllability of output water pressure lead to unstable water supply pressure and flow rate of nozzles, which is not conducive to simulating continuous rainfall in a natural state throughout the day, and the rainfall intensity is not easy to control or can only be used for heavy rainfall simulation tests. Unfavorable disassembly and transportation caused by uneven rainfall intensity caused by the difficulty of vertical height control, fixed rainfall nozzles that cannot be moved and reciprocated, unable to output multiple channels of water with equal and stable water pressure at the same time, and multiple welds on the bracket.

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