Research methods：Based on the study and understanding of the major engineering geological problems of the Yunnan- Tibet Railway, firstly the geological route selection method is adopted to confirm the preliminary mute strike. Afterward, comprehensive argumentation and selection will be carried out by combining the technical conditions, important economic locations and its catchement areas, development of natural resource etc. to select the beat mute scheme.
Research conclusions：The Yunnan-Tibet Railway is located in the area of the most intensive new tectonic movement in Southwest China, where geological hazards are active along the Line. The major engineering geological problems include active faults and earthquake, high stress, earth heat (geothermy)，hazardous gas, collapse, landslide, mudflow, glacial action, snowslide , karst, soft soil, frozen soil, swelling rock (soil)，drift sheet, sand storm, sand soil liquefaction, radioactivity etc.and therefore the area may 6a called”The World Geological Museum". Compared to the completed Baoji-Chengdu Railway，Chengdu-Kunming Railway, Manning-Kunming Railway and Qinghai-Tibet Railway, the Yunnan-Tibet Railway will be of far more complex engineering geological conditions, far more difficult in reconnaissance, design and construction; therefore, it is named ”The Toughest Railway Project Worldwide"，To solve the problem of the route strike of the Yunnan-Tibet Railway, the "Dali-Lijiang-Deqin-Linzhi-Langxian-Lhasa" scheme is recommended. As for the construction time sequence, the east and west sections will be constructed before the middle section, so as to reduce the state's heavy burden on investment in the project.
2007, Vol. 24 
