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| Estimation of Heat － harm of Gaoligong Mountain Tunnel of Dali － Ruili Railway |
| HOU Xin － wei1，LI Xiang － quan1，JIANG Liang － wen2，DU Yu － ben2，DENG Hong － ke2，ZHOU Zhi －chao1，LIU Ling － xia1 |
| 1． CAGS，Shijiazhuang，Heibei 050061，China; 2． China Railway Eryuan Engineering Group Co． Ltd，Chengdu，Sichuan 610031，China |
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Abstract Research purposes: The high temperature heat － harm is one of common geological disasters of deep － buried long tunnels． According to the practical data，and considering the influence factors，such as the lithology，fault，ground temperature，hot spring，the main reservoir structure，and the major river，the heat － harm danger in the tunnel area was estimated and sorted with the weights and and grade standards by utilizing analytic hierarchy process and expert evaluating method，and the GIS space analysis for the purpose of providing the reference to the selection，design and construction of the tunnel in high temperature region．
Research conclusions: The heat － harm in the studied area was generally distributed in the west area from the north and in east area from the south，obviously controlled by the fault，and concretely speaking the heat － harm was mainly distributed in granite and metamorphosed rock regions． Along the C12K route，there were four sections where the hot water － bursting was easy to happen， featured with the fault concentration， located in the magmatic area and metamorphic areas or catchment basin edge．
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Received: 22 March 2011
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2011, Vol. 28 
