基于模糊层次分析的房山区五丰沟泥石流危险性评价OA

In July 2023,heavy rainfall triggered multiple landslides and collapses in Wufeng Gully,Fangshan District,leading to a substantial accumulation of loose material in the gully.Combined with the effects of human activity,this has significantly elevated the debris flow risk,posing a serious threat to downstream residents and infrastructure.This study focuses on the Wufeng Gully debris flow.Based on field investigations and an analysis of the regional geological background,formation conditions,and developmental characteristics,a nine-indicator evaluation system was established,encompassing geological,topographic,and hydrodynamic factors.The fuzzy analytic hierarchy process(FAHP)was used to evaluate the debris flow hazard.The results indicate that the debris flow in Wufeng Gully has reached a highly dangerous state,a finding consistent with field observations.This study provides a scientific basis for disaster prevention and mitigation strategies in the area.