兰新第二双线深路堑基岩顺层高边坡裂缝工程的加固处理研究  

Research on Reinforcement Technology of Bed-parallel Rock Crack of High Slope of Deep Cutting in Second Double Line of Lanzhou-Xinjiang Railway

作　　者：辛文栋[1] 

机构地区：[1]中铁第一勘察设计院集团有限公司,西安710043

出　　处：《铁道标准设计》2012年第9期38-43,共6页Railway Standard Design

摘　　要：兰新第二双线铁路达板城风区两大桥之间遇深挖方路堑工程,基岩顺层倾向线路,在爆破施工作业完成最上两级边坡后,右侧堑顶出现了4处裂缝,最大裂缝宽度20 cm,经勘察为施工开挖形成的顺层工程滑坡。经过方案比较,采用重力式挡土墙结合顺层清方方案进行施工,解决了路堑顺层高边坡裂缝滑坡的问题。There is deep cutting works between two bridges at Dabancheng wind area along the second double line in Lanzhou-Xinjiang Railway.Four cracks with 20 cm in maximum crack width were found at the cutting top on the right side after the uppermost two levels of slopes were completed through the blasting operations.Through investigation,these cracks were identified as bed-parallel rock landslides caused by construction excavation.After schematic studies,the scheme of gravity retaining wall in combination with bed-parallel earth clearing was employed.Therefore the issue of bed-parallel rock crack in the high slope of the deep cutting was solved.

关 键 词：深路堑 高边坡 顺层 裂缝 加固 

分 类 号：U21[交通运输工程—道路与铁道工程]