摘要
金沙江特大桥是丽(江)-香(格里拉)铁路的关键控制性工程之一。通过对规划桥位工程地质条件的系统分析,采用赤平投影和Sarma法计算评价了两岸岸坡的工程稳定性。分析表明,香格里拉岸主要是卸荷裂隙以及由3组结构面切割的岩体稳定性问题;丽江岸主要问题有:滑坡、危岩落石、冰碛层稳定性、水库坍岸等。研究成果对金沙江特大桥桥址方案选择具有一定指导意义。
Jinshajiang Bridge is one of the key controlling projects of Lijiang - Shangrila railway. Based on the systematic anal- ysis of the engineering geological conditions of planned location of the bridge, the stability of banks is evaluated by stereographic projection and Sarma method. The results show that the unloading crack and the stability of the rock mass cut by three rock struc- ture planes are the major engineering geological problems of Shangrila side ; the geological problems of Lijiang side are landslide, rock fall, stability of the moraine layer and reservoir bank collapse etc. The results are helpful to the location selection of Jin- shajiang Bridge.
出处
《人民长江》
北大核心
2013年第1期38-41,共4页
Yangtze River
基金
中铁二院工程集团有限责任公司专项科研项目"丽香铁路高墩大跨特大桥位及线路高陡边坡专项地质勘探与评价研究"(勘-09-丽香-13)
中央高校基本科研业务费专项资金资助(SWJTU09BR033)
关键词
工程地质
方案选择
丽香铁路
金沙江特大桥中图法
engineering geology
scheme selection
Lijiang- Shangrila railway
Jinshajiang Bridge
