Design of Artificial Rainfall Simulator for Model Test of Landslide

摘要

Landslide is a main type of natural disasters, and makes huge human life losses and property losses. Landslides are often triggered by rainfall, especially long time rainfall or high intensity rainfall. Model test is an effective method to study the mechanism of landslide. An artificial rainfall simulator for model test of landslide is designed, which including water reservoir, water pressure control and rainfall drop making needles. To maintain the rainfall intensity, the water lever of reservoir is kept constant by a servo-control system. And a cross leaf can rotate in the raining process is set in the front of rainfall drop making needle to make the local rainfall drop distribution uniform. Then particle flow method is used to simulate the rainfall drops making process, and the result shows that he reasonable rotation velocity of needle leaf should be confirmed in the rainfall calibration to maintain a uniform distribution before test.