镇胜高速公路晴隆古滑坡成因特点及防治对策  

Formation Characteristics and Control Measures of the Ancient Landslide of Qinglong in Zhenning-Shengjingguan Highway

作　　者：刘正梁[1,2] 孔纪名[1] 周勇[3] 

机构地区：[1]中国科学院山地灾害与地表过程重点实验室,四川成都610041 [2]中国科学院研究生院,北京100049 [3]贵州省交通规划勘察设计研究院,贵州贵阳550001

出　　处：《山地学报》2008年第6期727-732,共6页Mountain Research

基　　金：交通部西部交通建设科技项目《西部地区公路地质灾害监测预报技术研究》(2003-318-802-01)资助~~

摘　　要：以镇胜高速公路晴隆县K85线路建设中所诱发新滑坡为例,分析了古滑坡体发育特征和新滑坡成因特点,表明了古滑坡的地质特殊类型对公路建设的危害。研究结果表明,晴隆古滑坡具有地貌隐蔽性、岩性复杂多样和对环境改变响应敏感等特征,复活的新滑坡是在古滑坡的基础上受公路施工切坡和降雨诱发而形成的。在确定影响滑坡稳定的主要控制因素和失稳机理的基础上,分析和评价了不同工况条件下的稳定性,并根据古滑坡特殊地质条件,提出了进行分级开挖、逐级治理滑坡的防治对策。Taking the landslide of Qinglong along K85 in Zhenning-Shengjingguan highway as an example, in this paper, the development characteristic of the ancient landslide and the formation mechanism of the new landslides were discussed and it reveals the ancient landslide with special geological type is harmful for the highway construction. The result shows ： the landslide of Qinglong has the characteristics of hiding landform, complex lithological and being sensitive to the environment change; the new landslides evolved from the ancient landslide was induced by engineering excavation during the period of highway construction and rainfall. In the end, the stability under different conditions was analyzed and evaluated based on the main control factors and sliding mechanism of the landslide. The countermeasures of excavating and controling by stage of landslide were given according to the special geological of the ancient landslide.

关 键 词：高速公路 古滑坡 成因特点 稳定性分析 防治对策 

分 类 号：P642.22[天文地球—工程地质学]