Abstract：Research purposes： The Sichuan - Tibet Railway is the key construction project of the national 13th Five Year Plan. Now the Lhasa - Linzhi section of the railway is under construction，the Chengdu - Kangding section of the railway has finished the work of feasibility study，however，the survey and design work of the middle Kangding - Linzhi section of the railway is not yet formally launched. The N - S mountain area，which the Sichuan - Tibet Railway running through，is the bottleneck area for the Sichuan - Tibet Railway building in past decades，with the region engineering geological characteristics of high altitude， high gap in altitude， strong tectonization and developmental mountain disasters. In order to solve this problem， China Railway Eryuan Engineering Group Co. Ltd has been done the study work that study of the geological hazard characteristics of region of Chin - sha River，Lantsang River and Nujiang River and comprehensive geological alignment of the Sichuan - Tibet Railway. Based on the viewpoints of neotectonics， the paper researched the characteristic of deplanation plain， summarized the engineering geological issues of the N - S mountain area， and discussed the geological alignment fundamental of Sichuan - Tibet Railway running through the traverse mountain area. Research conclusions ：( 1) The N - S mountain area,with the characteristics of high altitude and high gap in altitude, develop three - level deplanation plains which averaging over 4 750 m, 4 100 m and 3 500 m above sea level, respectively. Among the deplanation plains are three - level slope transition area. The higher the altitude % the sooner the deplanation plain and slope transition area formed. (2) The deplanation plain，with the characteristics of level and steady, is the best region of the Sichuan - Tibet Railway alignment，and among the slope transition area from high altitude to low altitude，the stability of tiie slope transition area reduced out. (3 ) In the alignment of the Sichuan - Tibet Railway，take full advantage of the deplanation plain，short the length of the slope transition area，and line along the deep canyon is inappropriate. (4) The results can be applied to the railway and highway location in the alpine - gorge area.
张广泽,蒋良文,宋章,吴光. 横断山区川藏线山地灾害和地质选线原则研究[J]. 铁道工程学报, 2016, 33(2): 21-24.
ZHANG Guang - ze1，JIANG Liang - wen1，SONG Zhang1，WU Guang2. Research on the Mountain Disaster and Geological Alignment Fundamental of Sichuan - Tibet Railway Running Through N - S Mountain Area. Journal of Railway Engineering Society, 2016, 33(2): 21-24.
2016, Vol. 33 
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