研究目的:兰渝铁路兰州至广元段位于甘肃省东南部和四川省西北部,沿线地形陡峻、地质构造十分复 杂,不良地质极其发育,同时桥隧等重点工程集中。“5 ? 12汶川大地震”危害最严重的北川、映秀、青川、灌县 (都江堰）、江油等，均分别位于兰渝铁路通过的青川大断裂（F8)、北川映秀深断裂（F9)、广元江油灌县大断 裂带（F10)上。因此有必要研究地震灾害对拟建兰渝铁路工程设置的影响。
研究结论:根据地震后现场调査的情况,得出如下结论:地震对线路附近地质构造、地层结构未产生明显 的影响;对大型、较大型的滑坡、泥石流等不良地质体在短期内的影响甚微;对既有建筑物的影响较大;地震灾 害带来的次生灾害影响深远，加剧了原本就非常发育的泥石流的爆发;地*引发的崩坍和危岩落石现象较为 普遍,对兰渝铁路的工程安全影响较大，设计中需采取相应措施，加强防护。并提出了针对兰渝铁路线路选 线、路基工程、桥梁工程和隧道明洞工程设计的建议，为兰渝铁路的下一步设计起到指导作用。
Research purposes ： The section between Lanzhou and Guangyuan of Lanzhou - Chongqing Railway Line locates in the southeast part of Gansu Province and the northwest part of Sichuan Province with steep topography, complicated geological structure and unfavorable geological conditions and most of the bridges and tunnels of this railway line will be built in this area. Beichuan, Yingxiu, Qingchuan, Guanxian ( Dujiangyan) and Jiangyou suffered very much from the May 12 Wenchuan Earthquake, separately locate on the Qingchuan Fault ( F8 ) , Beichuan - Yingxiu Fault (F9) and Guangyuan - Jiangyou - Guanxian Fault ( F10) , so it is necessary to do the study on the impact of earthquake on construction of Lanzhou - Chongqing Railway.
Research conclusions ： Based on the site investigation after the earthquake，it is concluded: (1) The earthquake impact on the geological structure and stratum along the railway line is unobvious. (2) The earthquake impact will not produce the large landslide and mudflow in short period of time，but do impact the existing building very much. (3 ) The sequence - disaster caused by the earthquake makes long - term impact，which can possibly cause mudflow. (4) The rock falling caused by the earthquake is very common，which will make impact on the construction of the railway, so the preventive measures should be taken into account in the design and construction stages. In addition, the proposals are made in this paper for the route election, subgrade engineering and bridge and tunnel constructions for construction of the line.
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