【作者】 王栋； 朱磊； 王子江； 谢强； 赵文；

【Author】 Wang Dong;Zhu Lei;Wang Zijiang;Xie Qiang;Zhao Wen;China Railway Eryuan Engineering Group Co.Ltd;Southwest Jiaotong University;

【机构】 中国中铁二院工程集团有限责任公司； 西南交通大学；

【摘要】 本文通过对拟建川藏铁路新都桥地区32处季节性粗颗粒冻土边坡的野外调查和现场监测,研究了季节性粗颗粒冻土边坡的破坏模式,主要分为剥落、滑塌、冲刷和热熔滑塌4种破坏类型。通过对边坡稳定性影响因素的统计分析,确定了边坡稳定性的主要影响因素,并提出了相应的措施建议,建议边坡开挖高度不宜超过4m,坡比不易大干1:1.75,对后期的铁路沿线边坡的勘查设计具有指导性的意义。更多还原

【Abstract】 In this paper,the field investigation and monitoring of 32 seasonal coarse grained frozen soil slopes along Sichuan-Tibet railway in Xinduqiao area were carried out.The failure modes of seasonal coarse grained frozen soil slope are studied,which are mainly divided into spalling,sliding,erosion and thermal melting collapse.Through the statistical analysis on factors which affect the stability of slope,the main factors are confirmed and corresponding prevention and control measures and suggestions are put forward.Proposed slope excavation height should not be more than 4m,the slope ratio should not be greater than 1:1.75.These suggestions have guiding significance for the later slope exploration design along the railway slope.更多还原