Abstract：Abstract:Research purposes： The mineral resources are abundant along Yuxi - Mohan railway， and mined out area has great influence on the line. Based on detailed investigation? of geology and mining situation， in this paper the geological route selection is researched about goafs of copper mine and salt mine which impact and control the line， through the stability analysis on goafs according to correlation theory. Then the reasonable line selection scheme is advised，in order to provide important references for tlie Yuxi - Mohan railway line selection. Research conclusions：The goafs of Yagu copper mine，Mohei and Moxie salt mine are distributed in different mileage location of Yuxi - Mohan railway，with different mining characteristics. The following conclusions are obtained ： ( 1) The goaf of Yagu copper mine is old and difficult to find out the situation of mining，and the line is recommended to choose the downstream scheme of Talang river to avoid it. (2) The line of feasibility study is proposed to avoid the Mohei salt mine witli surface subsidence obviously and high level erosion of groundwater. ( 3 ) The line avoided Moxie salt mine should be choosed，although it has small change in length and higher ratio of bridge and tunnel. (4) Mined out areas tend to be less stable，more difficult to control and larger project risk，the line should be avoided as far as possible. (5 ) The research results can provide some references for the geologic route selection in goafs on similar environmental conditionP.
2017, Vol. 34 
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