Debris Flow Disasters Induced By Forest Fire - Taking the Reneyong Gully as An Example

摘要

Debris flow is a kind of natural geological disasters occurred in the mountains areas, caused by a special flood along the steep mountain valleys or diarrhea elicited by flood erosion, which contains a large number of mud, sand, stones and other solid matter. The mechanism of debris flow occurrence and development is complex, affected by many factors, such as the destruction of the ecological forest fire, the fire heating process reducing the overlying soil moisture, leading to weakening the structural strength of soil, which creates the condition of the debris flow, shallow soil landslide and soil and water loss. This paper take the debris flow of Reneyong gully in Zhengdou village, Xiangcheng county, Sichuan Province of China as an example, describe the development features and genetic analysis of the post-fire debris of Reneyong gully. This paper focuses on discuss the relationship between forest fire and the debris flow.