文蒙铁路大黑山段岩溶区线路方案研究

Study on the Route Plan of the Wenshan to Mengzi Railway in Karst Area of the Great Black Mountain Section

文山至蒙自铁路穿越老寨大黑山岩溶发育地段,地质构造作用强烈,易引发突涌水及危岩崩塌等工程地质问题。为尽早确定该段线路方案,采取实地钻探验证、区域地质调查等手段,系统性摸清研究区域岩溶发育特征、水文条件及危岩落石分布情况,同时结合线路走向、地形和地质条件以及周边高速公路工程,综合工程条件、施工安全风险及工程投资等因素进行系统研究,提出工程地质条件相对较好、无危岩落石隐患、工程投资适中的经乐诗冲村南侧越岭线路方案。

The Wenshan to Mengzi Railway crosses the karst development section of Laozhai the Great Black Mountain, which has a strong geological structure and it is easy to cause engineering geological problems such as water inrush and dangerous rock collapse. In order to determine the route plan of this section as soon as possible, the on-site drilling verification, regional geological survey, systematic understanding of karst development characteristics, hydrological conditions and rockfall distribution of dangerous rocks in the study area were adopted, and combined with the route direction, topography and geological conditions, as well as the surrounding highway projects, comprehensive engineering conditions, construction safety risks and engineering investment and other factors were studied, and a route plan for crossing the ridge on the south side of Leshichong Village with relatively good engineering geological conditions, no hidden danger of dangerous rockfall, and moderate engineering investment was proposed.