工程地质分析思路在泥石流评价中的应用  

Application of engineering geological analysis method to the debris flow research

作　　者：王小群[1] 沈军辉[1] 游敏[2] 

机构地区：[1]地质灾害防治与地质环境保护国家重点实验室(成都理工大学),成都610059 [2]安徽建筑工业学院土木工程学院,合肥230022

出　　处：《成都理工大学学报（自然科学版）》2011年第4期422-429,共8页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家自然科学基金资助项目(40372136)

摘　　要：泥石流的预测预报对于工程中灾害防治有着重要的意义。从工程地质分析角度入手,以鹧鸪山隧道西口阎王曲沟泥石流为例,采用现场勘察的方法,研究了泥石流的基本特征和形成条件。在对泥石流形成演化过程机制分析的基础上采用泥石流易发程度和单沟泥石流危险度两种方法对该泥石流进行了评价预测。分析结果表明:总体上阎王曲主沟仍有暴发泥石流的可能,其最有可能的方式是中上游流域支沟泥石流的暴发引起主沟泥石流的发生,属中等易发偏轻度易发程度,属中度危险泥石流沟。阎王曲二支沟再次暴发泥石流的可能性较大,属中等易发偏极易发等级,属中度危险泥石流沟。The prediction of the debris flow disaster prevention for the project is of important practical significance.Taking the Yanwangqu ditch debris flow on the west side in the Partridge Hill Tunnel of Sichuan for example and using the field investigation method,this paper studies the basic characteristics and the formation of debris flow conditions in detail.Based on the formation mechanism and evolution of the debris flow,two methods（the extent of debris flow-prone and debris flow risk alone ditch） are used to predict the debris flow.The results show that the Yanwangqu main gully debris flow is still the possibility of the outbreak,and the most likely way is caused by the outbreak of the upper basin tributary debris flow.The risk is mild to moderate outbreak degree and moderate risk of debris flow.The Yanwangqu tributary debris flow（the second tributary） will more likely outbreak.It will be the moderate to easy outbreak degree and moderate risk of debris flow.

关 键 词：鹧鸪山 泥石流 工程地质分析方法 基本特征 风险评价 

分 类 号：P642.23[天文地球—工程地质学]