黄土地区公路崩塌危险性简易快速评价方法探讨  

Study on quick and easy hazard evaluation method for highway slope collapse in loess area

作　　者：马保成[1] 范丽晓[2] 田伟平[2] 

机构地区：[1]西安科技大学建筑与土木工程学院,陕西西安710054 [2]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《中国地质灾害与防治学报》2014年第2期19-25,共7页The Chinese Journal of Geological Hazard and Control

基　　金：西部交通建设科技项目(路基灾害防治技术推广及应用示范;编号:2006 318 000 07)

摘　　要：公路黄土崩塌灾害在陕北黄土地区多发、易发，给当地公路交通建设和运营造成严重危害。结合陕北$302（榆林至佳县）沿线典型路段黄土边坡的现场调研，研究公路崩塌灾害简易快速评价方法，对灾害科学评判及减灾具有重要的工程意义。首先，分析了影响黄土崩塌灾害的因素，并通过专家咨询法和相对比较评分法提取了4个关键因子作为识别指标，即破坏阶段、坡度、崩塌规模和坡高；其次，给各个识别指标赋以相应权重，对公路黄土崩塌危险性进行初步综合评价，并以K66＋100～K66＋650路段为例进行实例检验，为快速识别评价公路黄土崩塌提供了一种方法。Highway slope collapse occurs frequently in loess area of Northern Shaanxi Province, causing serious harmto the local highway traffic construction and operation. Based on field investigation of loess slopes of S302 （Yulin toJiaxian） typical sections, the study on quick and easy identification and evaluation method for highway slope collapsehas important engineering significance. First of all, the factors that influence collapse disasters are analyzed; andthrough the expert consultation method and relatively ratings method, the four key factors like destruction phase, slopeangle, the collapse size and slope height are considered as identification indexes; Secondly, with each identificationindex multiplied by the corresponding weight, the comprehensive evaluation of highway loess collapse hazard isconducted, taking K66 ＋ 100 - K66 ＋ 650 section as an example, which provides a way for the quick and easyidentification and evaluation of highway loess collapse.

关 键 词：公路工程 黄土边坡 崩塌 识别评价 

分 类 号：U416.14[交通运输工程—道路与铁道工程] P642.21[天文地球—工程地质学]