渝昆高速铁路田坝车站纵断面方案研究

Study on the Longitudinal Section Scheme of Tianba Station of Chongqing to Kunming High-Speed Railway

渝昆高铁云贵段田坝车站为规划车站,海拔2000m以上,地质条件复杂。田坝车站多为深路堑工程,进站端深路堑位于卡竹向斜核部,岩层破碎,局部地段存在边坡顺层风险,边坡干扰并行的既有高速公路,线路右侧有大型弃渣场。在线路走向的基础上,确定最佳田坝车站纵断面成为关键。论文综合场区内工程地质条件、周边地形地物控制条件、工程设置的安全性、施工以及运营风险、工程投资等,研究车站纵断面方案,保证铁路工程设计符合安全可靠、技术先进、经济合理的要求。

Tianba station in Yunnan Guizhou section of Chongqing Kunming high speed railway is a planned station, with an altitude of more than 2000 meters and complex geological conditions. Tianba station is mostly a deep cutting project. The deep cutting at the entrance end is located at the core of Kazhu syncline. The rock stratum is broken. There is a risk of slope bedding in some sections. The slope interferes with the existing expressway in parallel. There is a large spoil ground on the right side of the line. On the basis of the horizontal direction of the line, it is critical to determine the optimal longitudinal section of Tianba station. In this paper, the longitudinal section scheme of the station is studied by integrating the engineering geological conditions of the site, the control conditions of the surrounding terrain and features, the safety of the project setting, the construction and operation risks, and the project investment. Ensure that railway engineering design meets the requirements of safety, reliability, advanced technology and economic rationality.