基于沟谷信息熵的公路泥石流危险性快速评价  

Rapid Assessment of Debris Flow Hazard along Highway Based on Gully Information Entropy

作　　者：龚标[1] 陈爱云[1] 杨亮 汪洋[2] 彭辉雄 GONG Biao;CHEN Aiyun;YANG Liang;WANG Yang;PENG Huixiong(China Railway Siyuan Survey and Design Group Co.,Ltd.,430063,China;Faculty of Engineering,China University of Geosciences(Wuhan)9Wuhan 430074,China;Construction and Installation Engineering Co.,Ltd.,China Railway ISth Bureau Group,Tianjin 300308,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063 [2]中国地质大学(武汉)工程学院,湖北武汉430074 [3]中铁十八局集团建筑安装工程有限公司,天津300308

出　　处：《安全与环境工程》2023年第2期142-146,共5页Safety and Environmental Engineering

基　　金：中铁第四勘察设计院集团有限公司科学技术研究项目(2020K114)。

摘　　要：公路可行性研究阶段常常缺少较详细的地质资料和数据,能够基于有限资料条件下开展公路泥石流危险性的快速评价对公路选线和后期减灾防灾非常必要。以地貌演化理论为基础,探讨了泥石流发育阶段划分依据,构建了泥石流发育程度与泥石流沟谷信息熵之间的判断矩阵,并结合公路与泥石流沟的位置关系,提出了公路泥石流危险性快速评价方法和实施方案,最后选取云南省勐绿高速公路K204~K221段沿线的6条典型泥石流沟进行了实例验证分析。实例应用结果表明:选取的6条典型的泥石流沟中,2条泥石流沟的危险性等级为中等,4条泥石流沟的危险性等级为小,该评价结果与现场调查结果完全吻合,验证了本文评价方法是可行、可靠的,该方法数据易于获取,评价非常快速方便,适用于公路可行性研究阶段的泥石流灾害危险性快速评价。Detailed geological data are lacking in the feasibility study stage of highways,so it is very necessary for highway route selection and disaster reduction to carry out a rapid assessment of debris flow along highways based on limited data.This paper discusses the division basis of debris flow development stages and constructs the judgment matrix between the development degree and the information entropy of debris flow gully based on the geomorphic evolution theory.Besides?the paper puts forward a rapid evaluation method and implementation scheme of debris flow hazard along highway combined with the location relationship between the highway and debris flow gully,and verifies it eventually.At the end,the paper selects six typical debris flow gullies along K204〜K221 of Meng-LYU highway in Yunnan Province as an example.The results show that two of the six typical debris flow gullies chosen have moderate hazard levels,and four gullies have small hazard levels,which is in good agreement with on-site investigation conclusion.The resuIt verifies the feasibility and reliability of the proposed method,and the data acquisition and evaluation is very fast and convenient,the method is applicable to rapid assessment of debris flow hazard along highways in feasibility study stages.

关 键 词：公路 泥石流 危险性快速评价 沟谷信息熵 

分 类 号：X45[环境科学与工程—灾害防治]