Artificial rainfall simulationprecipitation emulation method applied tofor debris flow test

Abstract

The invention discloses an artificial rainfall simulationprecipitation emulation method applied tofor a debris flow test. The artificial rainfall simulationprecipitation emulation method is characterized in that: the magnitude of the pressure in a water tank can be adjusted conveniently and flexibly, corresponding pressure is set according to a region underlying surface condition and a rainfallprecipitation feature in order to control a rainfallprecipitation type; a region point heavy rainfall concentration phenomena is emulated simulated by adjusting internal pressure inside distribution boxes, a rainfallprecipitation process in with strong wind can be emulated simulated by turning off one or more distribution boxes; rainstorm types xan also be simulated by overlapping rainfall regions; by inputting rainfall data through a computer system, and controlling a pressure control valve by a controller, the rainfallprecipitation types can be controlled accurately and rapidly. By adopting theartificial rainfall simulationprecipitation emulation method, solid particles and flotation plants in a river can be filtered well through a the pressure control valve, energy saving and environmentfriendliness are achieved, and the service life of a sprayer is prolonged.

Description

technical field [0001] The invention relates to the technical field of debris flow start-up tests, in particular to an artificial rainfall simulation device and a simulation method for debris flow tests. Background technique [0002] Debris flow is a solid-liquid two-phase fluid filled with a large amount of sand, stones and boulders. It has the characteristics of sudden outbreak, strong handling impact and silting ability, and has great destructive power. The nature of debris flow determines that its formation requires sufficient water sources. The water source that causes debris flows in my country mainly comes from heavy rain, which manifests itself as a disaster when the rainfall reaches a certain critical rainfall value. Therefore, the determination of critical rainfall is of great significance for studying the formation mechanism of debris flow, analyzing and predicting the characteristics of future activities of debris flow, and guiding the design of debris flow prev...

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