贵德盆地公路工程沿线不良地质体危险性评价  

Risk Assessment of Unfavorable Geological Bodies along the Highway Project in Guide Basin

作　　者：王猛[1] 张行[1] 帅爽 WANG Meng;ZHANG Hang;SHUAI Shuang(CCCC Second Highway Consultants Co.,Ltd.,Wuhan 430058,China;School of Civil Engineering and Architecture,Wuhan Polytechnic University,Wuhan 430010,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉430058 [2]武汉轻工大学土木工程与建筑学院,武汉430010

出　　处：《路基工程》2025年第2期15-23,共9页Subgrade Engineering

基　　金：青海省青藏高原北部地质过程与矿产资源重点实验室专项基金(2019-kz-01)。

摘　　要：以青海省S101线贵德盆地段扩能工程项目设计中心线与比较线两侧为研究区,通过遥感解译和野外调查,获得研究区内滑坡、崩塌、泥石流和冻融泥流等不良地质体共122处,选取3个一级评价因子和10个二级评价因子,采用遗传算法优化层次分析法中评价因子权重的计算,运用模糊综合评判法对研究区不良地质体的危险性等级进行综合评价。结果表明:研究区不良地质体危险性大的区域主要分布在坡度较陡,植被覆盖度低,断裂经过的新近系、古近系红层分布区;中心线受不良地质体威胁的路段总长小于比较线;GA-AHP-模糊综合评价具有更高精度。122 unfavorable geological bodies such as landslide,collapse,debris flow and freeze-thaw mudflow in the study area were obtained by remote sensing interpretation and field investigation on both sides of the design center route and comparison route of the capacity expansion project of Guide Basin Section of Qinghai S101 Line.3 first-level evaluation factors and 10 second-level evaluation factors were selected.The genetic algorithm was used to optimize the calculation of the weight of evaluation factors in the analytic hierarchy process,and the fuzzy comprehensive evaluation method was used to comprehensively evaluate the risk level of unfavorable geological bodies in the study area.The result shows that,the areas with high risk of unfavorable geological bodies in the study area are mainly distributed in the Neogene and Paleogene red beds with steep slope,low vegetation coverage and faults.The total length of the section of the central route threatened by the unfavorable geological body is less than that of the comparison route.Therefore,GAAHP-fuzzy comprehensive evaluation yields higher accuracy.

关 键 词：不良地质体 空间分布 多源遥感数据 模糊综合评价法 危险性评价 

分 类 号：P642[天文地球—工程地质学] TP7[天文地球—地质矿产勘探]