内六铁路K494段边坡病害原因分析及整治措施研究  

Analysis on reasons and control measures for slope diseases at K494 of Neijiang-Liupanshui railway

作　　者：舒中文 于贵 唐军平[2] 程谦恭[3] 李星[3] 

机构地区：[1]中铁西北科学研究院有限公司,兰州730030 [2]中铁二院工程集团有限责任公司,成都610031 [3]西南交通大学地球科学与环境工程学院,成都610031

出　　处：《工程勘察》2017年第8期7-11,共5页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金资助项目(41530639);中国中铁股份有限公司重点项目(2014-重点-76)

摘　　要：依托于内六铁路坡体病害防治工程,对K494+890~K494+990段铁路边坡病害及防治措施进行研究,基于大量野外地质勘查、监测及高密度电法测量数据,详细阐述了病害的种类及其特点,分析了其形成原因并给出整治措施。结果表明:内六铁路K494段病害主要为边坡产生滑移变形及溶岩陷穴,最大下错位移量180mm,最大裂缝宽度240mm,边坡欠稳定;病害形成的主要因素为采煤等工程活动,其次为地质构造条件;采用"注浆+预应力锚索+截水沟"方案对病害体进行综合处治,该治理方案安全性和经济性良好。The diseases and countermeasures of the subgrade slope located in the range of K494 ＋ 890 ~K494 ＋ 990 of Neijiang-Liupanshui railway are studied. Based on sufficient field investigation,monitoring and high density resistivity method,the types as well as characteristics of such diseases are described in detail,and the mechanism and control measures are analyzed. The study results show that： the slope diseases at the K494 of the railway are mainly the slip deformation and karst depression,the maximum vertical displacement value is 180 mm,and the maximum crack width is 240 mm,the slope is unstable; the main factors triggering the diseases are the engineering activities of coal mining and the geological structure conditions; methods with ＂grouting ＋ prestressed anchor cables ＋ intercepting drain＂are conducted to treat the subgrade slope,which is of good safety and economical efficiency.

关 键 词：铁路路基 坡体病害 滑移变形 因素 治理方案 

分 类 号：TU457[建筑科学—岩土工程]