雅西高速冕宁段主要地质灾害类型及发育规律  

MAIN TYPES AND DEVELOPMENT LAW OF GEO-HAZARDS IN THE MIANNING PART OF YAAN-XICHANG EXPRESSWAY

作　　者：张瑞端[1,2] 郭长宝[2] 孙进忠[1] 张永双[2] 付晓晓[1,2] 汪西海[2] 

机构地区：[1]中国地质大学(北京)工程技术学院,北京100083 [2]中国地质科学院地质力学研究所,北京100081

出　　处：《地质力学学报》2013年第4期364-376,共13页Journal of Geomechanics

基　　金：科技基础性工作专项(2011FY110102);中国地质调查局项目(1212010914025);国家科技支撑计划课题(2011BAK12B09;2012BAK10B02)

摘　　要：在资料搜集、野外地质调查的基础上,对雅西高速冕宁段主要地质灾害类型及发育规律进行了分析总结,以期减少和预防高速公路遭受崩塌、滑坡和泥石流等的危害。研究表明,该区地质灾害类型主要为滑坡和泥石流,且以泥石流为主,具有分布广、密度大、危害性大等特点,在空间和时间上具有群发性和集中诱发的特征;地质构造、地形地貌、新构造运动、地层岩性是导致雅西高速冕宁段崩塌、滑坡和泥石流灾害频繁发生的内在影响因素,降雨、地震及人类工程活动是最为重要的诱发因素。On the foundation of data collecting and field geological survey, main geo-hazard types and development law in the Mianning part of Yaan-Xichang expressway have been summarized to prevent disasters caused by collapses, landslides, debris flows. Studies showed that the main geo- hazard types in the study area were landslide and debris flow, with taking debris flow as the main content. They were characterized by wide distribution, high density and great harmfulness. In space and time, they were group-occurring and concentrative inducing. Geological structure, neotectonic movement and formation lityology were inherent effect factors of frequent occurring of such geo- hazards as collapses, landslides and debris flows in the Mianning part of Yaan-Xichang expressway. Rainfall, earthquake and human engineering activities were most important inducing factors of the geo-hazards.

关 键 词：雅西高速冕宁段 地质灾害 发育规律 

分 类 号：P642.2[天文地球—工程地质学]