活动构造区山地环境铁路选线研究

在活动构造发育的山地环境进行选线是铁路、公路等工程建设关注的重大工程地质问题。文章结合我国西南地区新建昆河铁路玉蒙段的选线研究,论述近场区地质环境、新构造运动与地震、活动断裂与地震危险性、山地灾害等内外动力地质作用的区域性特征及重大工程地质问题,并从工程地质条件与技术、经济等方面论证比选最优线路走向方案。可供类似区域地质环境的山区铁路、公路选线借鉴。 

RAILWAY LOCATION IN A MOUNTAINOUS ENVIRONMENT IN AREAS OF ACTIVE STRUCTURES

Location of line in a mountainous environment in which active structures are well developed is a major engineering-geological problem concerned in railway and highway construction. In light of a study of the location of the Yu-Meng section of the newly built Kun-He Railway in southwestern China, the paper discusses the regional characteristics of internal and external dynamic geological processes and major engineering-geological problems such as the geological environment, neotectonic movement and earthquakes, active faults and seismic risks and mountainous hazards, and demonstrates and compares the optimized schemes of line orientation based on the engineering geological conditions and economic and technical aspects. This study may be used as reference for the railway and highway location in mountainous areas with a similar regional geological environment.