摘要
四川省宁南县石洛沟是一条低频泥石流沟,流域面积33.25 km2,主沟长17.19 km,相对高差2 867 m,沟床纵比降142‰。2006年7月7日石洛沟暴发了特大泥石流,造成8 000多人受灾,一人失踪,直接经济损失1 067万元以上。石洛沟泥石流具有规模大、危害重、冲淤严重、流态变化复杂、粒径沿程变化大等特点。分析了石洛沟泥石流的发生条件和泥石流特征,预测了泥石流的发展趋势,并且提出了相应的防治对策。
Ningnan-Shiluo Gully in Sichuan Province is a low-frequency debris flow gully, with drainage area of 33.25 km2 , gully length of 17.19 km, relative altitude of 2 867 m and bed gradient of 142‰. On July 7,2006, an extremely wide debris flow disaster took place in the Shiluo Valley, Ningnan County. It costs direct economic loss 10. 67 billion yuan, with one people disap- peared and 8000 people were affected by this disaster. This debris flow cocurred with the characters,such as great size, strong impact,complex fluid type and great range of particle diameter along debris flow path. In this paper,the basic characteristics and formation condition of debris-flow in this area are analyzed,the potential of debris flow is predicted,and the control measures are proposed.
出处
《水土保持研究》
CSCD
北大核心
2008年第3期239-241,共3页
Research of Soil and Water Conservation
基金
中国科学院知识创新项目(KSCX1-07-01-04)
关键词
泥石流
防治对策
石洛沟
debris flow
prevention eountermeasures
Shiluo gully
作者简介
卢铖昀（1982-），男，湖北松滋人，硕士，主要从事地灾勘察、评估与防治工作。E-mail：luchengyun@163.com.
