四川省都江堰市八一沟泥石流动力学特征及危险性评估  

Dynamic Characteristics and Hazard Risk Assessment of Debris Flow in Bayi Gully of Dujiangyan City of Sichuan Province

作　　者：周伟[1,2] 陈宁生[1] 邓明枫[1] 杨成林[1] 卢阳[1,2] 

机构地区：[1]中国科学院水利部成都山地灾害与环境研究所,四川成都610041 [2]中国科学院研究生院,北京100049

出　　处：《水土保持通报》2011年第5期138-143,共6页Bulletin of Soil and Water Conservation

基　　金：四川省科技支撑计划项目“都江堰市龙溪虹口景区泥石流灾害示范性评估预测与减灾策略”(2011SZ0190);水利部科技推广计划项目“山洪灾害监测预警实用系统”(TG1069)

摘　　要：2010年8月13日和18日,四川省都江堰市八一沟暴发特大规模泥石流,严重影响了当地人民的正常生产生活。通过实地调查八一沟泥石流灾害现场,详细地分析了其成因、动力学特征及危险性。研究表明,八一沟的物源、降雨和地形均满足泥石流的形成条件。该泥石流的规模为特大型,危险程度为高,有进一步发展趋势。该研究结果可为八一沟泥石流的工程治理及防灾减灾提供可靠依据。Two giant debris flows occurred in Bayi gully in Dujiangyan County,respectively on August 13 and 18,2010,affecting seriously local people＇s daily production and life.Based on field investigation data obtained from Bayi gully,the causes and the dynamic characteristics of the debris flows was analyzed,and a detailed risk assessment were carried out.The study results show that the loose material source,rainfall amount and topographic conditions of Bayi gully were contributed to the initialization of debris flows.The debris flows in Bayi gully were giant in magnitude and high in risk.The study provides a reliable basis for the debris flow prevention and mitigation in Bayi gully.

关 键 词：八一沟 泥石流 动力学特征 危险性评价 

分 类 号：P642.23[天文地球—工程地质学]