炮手沟泥石流的危险度评价

摘要

炮手沟位于辽宁省瓦房店市潘家屯河上源,主沟长3 350米,纵向坡角9°36＇,汇水面积2.56平方公里,各级沟谷共31条,累计长度13 450米。该区域平均每平方公里发生53处滑坡,是山地灾害严重的地区之一。文章应用层次分析法和模糊数学理论对炮手沟泥石流的危险程度进行了初步评价,能够较直观地反映出该泥石流沟的危害等级,对辽南泥石流灾害区的其他泥石流沟研究具有一定的实践意义。%Paoshougou is located in the upper reaches of Panjiatun River in Wafangdian City of Liaoning Province.The main gully length is 3,350 meters and the longitudinal slope angle is 9°36′.The catchments area is 2.56 square kilometers with a total of 31 different levels of gullies and the cumulative length is 13,450 meters.There are 53 landslides happening in this area per square kilometer on average and it's one of most dangerous areas for mountain disasters.This paper undertakes preliminary evaluation on the risks of Paoshougou debris flow with analytic hierarchy process and fuzzy mathematical theory which could be more intuitive to reflect the damage grade of the debris flow gully.It has certain practical significance on the research of the other gullies in debris flow disaster area of southern Liaoning.