拟建铁路成兰线横穿地质条件十分复杂的龙门山脉,并通过汶川大地震重灾核心区,工程地质与地震次生灾害问题控制线路方案。文中以跨越龙门山脉选择沿安县雎水河谷方案的事例,探讨近震源区余震频发条件下复杂山区的选线技术,可供铁路、公路选线借鉴。 The railway line to be built is to cross the Longmenshan Mountain, where the geological conditions are very complicated. Through the core area of ​​disaster hit by the Wenchuan earthquake and the program of controlling the secondary issues of engineering geology and earthquakes. This paper selects the case of the Huangshui River Valley in Yan’an County by crossing the Longmenshan Mountains and discusses the route selection technology in complex mountainous areas with frequent aftershocks in the near-focal-source area. It can be used as reference for railway and highway alignment.