As an integral part of Guangzhou-Kunming corridor,a main high-speed railway corridor in China's"Eight North-South and Eight East-West Corridors"railway network,Yunnan-Guangxi High-speed Railway has a prominent position in the railway network.This paper analyzed and determined reasonable schemes for hub introduction,track alignment,and key bridges and tunnels based on the functional orientation and characteristics of the railway,taking into account factors such as the topographical and geological conditions,urban planning,environmental sensitive points,construction safety and investment rationality.In the design stage of this project,"optimal system and controllable risks"was taken as the ore idea,and efforts were undertaken for technological breakthroughs and engineering practices.These efforts of more than ten years have led to a series of technological innovation achievements,which are rich in content,highly targeted,practical and theoretical,and have important guiding significance for the construction of high-speed railways in challenging mountain areas.
high-speed railwayoverall designtechnological innovationroute selection in mountain areakarst treatmentkarst tunnel
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