Experimental study of early warning system model of landslide induced by rainfall based on infinite slope method

Landslide early warning system is an effective tool to reduce the rainfall induced landslide hazard. Warning system against single landslide has a huge potential based on reliable physical mechanism. However, the complicated system usually involves many parameters and algorithms so that it is not widely acknowledged until now. In our study, we constructed a relatively simple landslide technical warning system based on an infinite slope model in the laboratory. The details which include warning idea, calculation of warning time, and information transmission are introduced. Experimental results from physical model validated the performance of this technical warning system under the scenes of different rainfall intensities and the initial water contents. Although the errors caused by soil erosion, and uncertainty of slip surface, and disagreement of initial water content, the technical warning system is still proved to have a reliability in the evaluation of the physical landslide model failure.