Characteristics, causation, and rehabilitation of Zhouqu extraordinarily serious debris flows in 2010, China  

作　　者：WANG Lan-min WU Zhi-jian WANG Ping CHEN Tuo 

机构地区：[1]Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China [2]Key laboratory of Loess Earthquake Engineering (China Earthquake Administration), Lanzhou 730000, China [3]Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu Province, Lanzhou 730000, China [4]State Key Laboratory of Frozen Soil Engineering (Cold and Arid Regions Environmental and Engineering Institute, Chinese Academy of Sciences), Lanzhou 730000, China

出　　处：《Journal of Central South University》2013年第8期2342-2348,共7页中南大学学报（英文版）

基　　金：Foundation item： Projects（40902094, 50978239） supported by the National Natural Science Foundation of China; Project（20121ESLZ01） supported by the Institute of Earthquake Prediction, China Earthquake Administration

摘　　要：In early morning of Aug 8th, 2010, the rain-triggered tremendous debris flows broke out simultaneously at the Sanyanyu ravine and Luojiayu ravine, which locate in the north part of Zhouqu County town. The debris flow is the most severe event of the same kind of disasters in the past sixty years in China, which caused great losses of people's lives and properties. Based on field investigation, remote sensing image interpretation and analysis of local climatological data, the local topographical conditions, active tectonic movement, massive debris source and torrential rains were the main formation causes which induced the catastrophic debris flows. Moreover, detailed geological surveys were carried out following the disaster, the other geological potential hazard sites were found out, and the geological and seismic hazard assessment has been put into practice. At last, scientific and appropriate countermeasures have been suggested to prevent and mitigate the extraordinarily serious debris flow.In early morning of Aug 8th, 2010, the rain-triggered tremendous debris flows broke out simultaneously at the Sanyanyu ravine and Luojiayu ravine, which locate in the north part of Zhouqu County town. The debris flow is the most severe event of the same kind of disasters in the past sixty years in China, which caused great losses of people＇s lives and properties. Based on field investigation, remote sensing image interpretation and analysis of local climatological data, the local topographical conditions, active tectonic movement, massive debris source and torrential rains were the main formation causes which induced the catastrophic debris flows. Moreover, detailed geological surveys were carried out following the disaster, the other geological potential hazard sites were found out, and the geological and seismic hazard assessment has been put into practice. At last, scientific and appropriate countermeasures have been suggested to prevent and mitigate the extraordinarily serious debris flow.

关 键 词：debris flows hazard assessment geological survey Zhouqu county 

分 类 号：P315.9[天文地球—地震学] TP75[天文地球—固体地球物理学]