黔张常铁路限制坡度研究  

Research on Limit Gradient of Qianjiang-Zhangjiajie-Changde Railway

作　　者：陈军团[1] 

机构地区：[1]中铁第一勘察设计院集团有限公司线路运输处,陕西西安710043

出　　处：《铁道运输与经济》2013年第3期20-25,29,共7页Railway Transport and Economy

摘　　要：黔张常铁路建设区域内岩溶及岩溶水是对线路坡度选择影响最大、最为突出的工程地质问题。结合黔张常铁路线路的功能定位、区域路网的坡度情况、地形地质特征和工程风险,从与相邻线匹配性、运输安全性、运输质量和经济性等方面分别对本线的限制坡度为13‰和18‰的方案进行研究和比选。最后,推荐经济性好,能进一步拔高线路高程,有效分解长大隧道,减少工程风险的限制坡度为18‰方案。Inside the Qianjiang-Zhangjiajie-Changde railway construction area, karst and karst water are the most serious and extrusive geological problems which influencing the selection of track gradient. Combining with the function location of Qianjiang-Zhangjiajie-Changde railway track, gradient status of regional railway network, terrain and geological characteristics as well as engineering risk, this paper studies and compares the schemes of 13%o and 18%o limit gradient of the railway respectively from the aspects of matching rate with adjacent line, transport safety, transport quality and economical efficiency. In the end, the scheme of 18%o limit gradient is recommended, which has good economy, could improve track height in further step and effectively construct long tunnel in subsection and reduce engineering risk.

关 键 词：铁路 限制坡度 地址特征 方案选择 

分 类 号：U212.34[交通运输工程—道路与铁道工程]