Characteristics, causation, and rehabilitation of Zhouqu extraordinarily serious debris flows in 2010, China
来源期刊：中南大学学报(英文版)2013年第8期
论文作者：WANG Lan-min(王兰民) WU Zhi-jian(吴志坚) WANG Ping(王平) CHEN Tuo(陈拓)
文章页码：2342 - 2348
Key words：debris flows; hazard assessment; geological survey; Zhouqu county
Abstract: 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.
WANG Lan-min(王兰民)1, 2, 3, WU Zhi-jian(吴志坚)1, 2, 3, WANG Ping(王平)1, 2, 3, CHEN Tuo(陈拓)4
(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)
Abstract: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.
Key words:debris flows; hazard assessment; geological survey; Zhouqu county
