西北地质2011，Vol.44Issue(3)：63-70,8.
"8.8"舟曲暴雨泥石流的成灾模式
The Disaster Mode of Rainstorm Debris Flow Happened in Zhouqu County on August 8,2010
摘要
Abstract
Through the field investigation and analysis on the Sanyanyu and Luojiayu valley debris flow happened in Zhouqu county, Gansu province on August 8? 2010, the paper thought that the sudden strong rainfall, the alpine gorge landform and the rich loose deposits are the three basic conditions which caused the debris flow disaster. The disaster characteristics included three aspects. Firstly, the drainage channel was occupied excessively by the building in stack area, so the flood discharge capacity is insufficient. Secondly, the step by step failure of the natural rock fill dam and artificial blocking dam in transportation zone caused a "domino effect" type of damage. Thirdly, the debris flow blocked Bailong river and formed barrier lake. It submerged county and aggravated the debris flow disaster. Zhouqu debris flow disaster is very typical and rare, hence, it is meaningful to reveal its disaster characteristics for the post-disaster treatment.关键词
泥石流/堰塞湖/行洪能量/暴雨/舟曲Key words
debris flow/ barrier lake/ flood discharge capacity/ rainstorm/Zhouqu county分类
天文与地球科学引用本文复制引用
赵成,王根龙,胡向德,李瑞冬,朱立峰,于国强.."8.8"舟曲暴雨泥石流的成灾模式[J].西北地质,2011,44(3):63-70,8.基金项目
国土资源大调查计划项目"西北黄土高原区地质灾害详细调查"(1212010640330) （1212010640330）
国土资源大调查项目"甘肃省白龙江流域主要城镇环境工程地质勘查"(1212011089083) （1212011089083）
国土资源大调查项目"小秦岭金矿区环境地质问题调查与评价"(1212010741003)资助 （1212010741003）
