G318泸定—竹巴笼段边坡崩塌发育规律及防治措施建议  

Development Regularities and Prevention Means of Slope Collapses Along Luding-Zhubalong Section of China National Highway 318

作　　者：邹雪晴[1] 裴向军[1] 程强[2] 袁进科[1] 母剑桥[1] 胡应强 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都610059 [2]四川省交通厅公路规划勘察设计研究院,四川成都610041 [3]四川省地质矿产勘查开发局二○七地质队,四川乐山614000

出　　处：《企业技术开发》2016年第10期24-29,共6页Technological Development of Enterprise

基　　金：交通运输部建设科技项目"四川藏区高海拔高烈度条件下公路建设减灾关键技术研究"(2013 318 800 020)

摘　　要：文章依据对G318四川藏区路段(泸定—竹巴笼)公路边坡的现场调查,通过崩塌的空间分布与地貌类型、地震作用、海拔高程、地形坡度和斜坡坡高的关系等方面的分析,归纳总结出高海拔、高烈度的深切峡谷路段公路边坡崩塌发育的规律:深切峡谷路段的崩塌发育集中,崩塌数量占了全路段的84%;在烈度为Ⅸ度区内崩塌发育最密集,线密度为0.3个/km;研究路段海拔高,季节性冻融和差异风化引起的崩塌或滚石较多,共占了全路段的69%;处于特殊地带的公路边坡崩塌的失稳模式以滑移式和滚落式为主,这与前面几个因素的影响是密不可分的。地处高海拔、高烈度、深切峡谷区,崩塌的发育分布规律和失稳模式均有特殊性。Based on field investigation of slope along national highway 318 in Luding-Zhubalong,the paper analyzed the relationship between the spatial distribution of collapses, the type of landform, the earthquake action, the altitude, the terrain slope and the slope height,The development law of highway slope collapses in high-altitude, high-intensity,deep canyons section was summarized:so many collapses developed in deep canyons section,it account for 84% of the whole way;Collapses are most intensive in the intensity of Ⅸ region,the liner density is 0.3 per kilometer;Because of the high-altitude,seasonal freeze-thaw and weathering caused by the more collapses or stones in the study section,it account for 69% of the whole way;The most collapse instability mode of the special section is sliping and tumbling,which is inseparable with the above aspects.The law of distribution of development and collapse instability modes have particularity in high-altitude,high-intensity,deep canyons section.

关 键 词：G318 公路边坡 崩塌 发育规律 失稳模式 

分 类 号：P694[天文地球—地质学]