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| Study on Track Alignment in Huangguoshu － Beipanjiang Section of Shanghai－Kunming Passenger Dedicated Line |
| MAO Bang － yan，WU Jun － meng，YU Hong － ping，TANG Bing |
| MAO Bang － yan，WU Jun － meng，YU Hong － ping，TANG Bing |
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Abstract Research purposes: The Huangguoshu － Beipanjiang section of the Shanghai － Kunming Passenger Dedicated Line is located in the mountain area deeply cut by Baling River and Beipan River in Kediya，with the complex terrain and geological conditions． The railway alignment is seriously restricted by the geological conditions．Therefore，the study on the railway alignment not only can avoid the hidden trouble of the engineering safety as much as possible when railway passes through the high gas formations，the dense goaf and the stratum with serious development of karst，but also can provide the reference to the high － speed railway alignment in the area with the same or similar geological conditions．
Research conclusions: Through the deep investigation and analysis of the environmental geological conditions and the main engineering geological problems of each alignment scheme，the GRC mathematical model was established to evaluate the alignment，and the evaluating index system and their weights for the geological alignment were offered． With GRC model，the optional schemes of CK，C4K and C19K were evaluated and their scores were respectively 73． 3，74． 3 and 73． 5． So the CK scheme was the final one． With this scheme，the railway keeps away from the unfavorable geological areas of landslide，scatter，collapse and mining area as well as the karst area with serious development．
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Received: 15 May 2011
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2011, Vol. 28 
