Abstract：Abstract : Research purposes ： The topography and geology are extremely complicated controlled by the tectonism along the Chengdu - Kunming Railway and the rock mass is especially broken. The collapse， landslide， debris flow，coal seam gas and goaf， active fault are the main engineering geological problems of controlling route scheme. Geological route selection research not only avoids the engineering safety hazards to the most extent crossing the high risl^ geological problems zone，but also provides a reference for future railway planning in this region. Research conclusions ：( 1) The article considers the main engineering geological problems are the collapse，landslide， debris flow，coal seam gas and goaf， active fault on basis of geological mapping， drilling， geophysical prospecting， laboratory test and the topical studies. (2) This article has put forward the princij^le of geological route selection under complicated geological conditions. ( 3 ) A relatively better engineering geological conditions scheme has been chosen according to comparison of geological conditions of all the line schemes. (4 ) The research results have reference significance for railway engineering - geological route selection.
2017, Vol. 34 
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