摘要
当地断裂众多，岩体破碎，崩塌滑坡遍布，加之是强震带和川西大暴雨中心区，相对高度３００—３５００ｍ，泥石流形成条件极为充分．泥石流沟汇水面积小，沟床比降陡，主沟长度短．绵竹汉旺后山泥石流综合治理后，可成为一个示例．
The east fringe in the south section of Longmen Mountain is the area between Jiangyou Municipality (at 31°46'N, 04'40'E) and Dujiangyan Municipality (at 31°00' N, 103°35'E). It has the direction in NE-SW, and 140km in length, 1-2km in width. There are many faults in this area. The rock is very broken. The deposits are very loose and instable. The relative height between valley and range is 300-3 500m.The warm and wet current from southeast has been blocked here to result this area in rainstorm centre of West Sichuan. Therefore, the debris flow is easy to take place. The Characteri sties of debris flow in this area are:the watersheld atpa was≤1km2, the gully-bed gradient was >400‰, and the length of main gully was≤2km. In Houshan Mountain at Hanwang Town,Mianzhu County, 5 debris flow gullies developed in the territory of 2km2. In the past 30 years.these debris flow gullies have brought out the economic loss over 200M yuan (RMB). Therefore the comprehensive control will be necessary.
出处
《山地研究》
CSCD
1996年第4期264-266,共3页
基金
四川省计划委员会委托项目
关键词
四川
龙门山
泥石流
综合治理
Sichuan Province, Longmen Mountain, debris flow, comprehensive control
