The main hazard of debris flow destroyed towns, mines, villages, killing people and livestock casualties, destruction of housing and other engineering facilities, destruction of crops, trees and farmland. In addition, blockage of river debris flow sometimes, not only blocking the shipping, but also may cause flooding. Many factors affect the strength of debris, such as mud-rock flow capacity, velocity, flow, etc., in which debris flow on the extent of the impact of debris flow disaster of the most significant. In addition, a variety of human activities are also many ways that these factors increased role in promoting the formation of debris flow.
