Key Technological Innovation and Practice of Qinling Tiantaishan Super-long Highway Tunnel Group
In response to the technical difficulties faced by the construction and operation of the Qinling Tiantaishan super long highway tunnel group,including engineering construction difficulty,complex operation management,safety risk,and high operational energy consumption,this paper systematically summarizes a series of innovative technological achievements in the construction and operation of the 32 km tunnel group under special geological and topographical conditions in the Qinling Mountains,focusing on four directions:safe and intelligent operation,safe and rapid construction,single-layer lining support,and natural energy utilization.The results show that:1)The problem of ensuring the safety of ultra long continuous highway tunnel groups in mountainous areas is solved through the innovation and application of intelligent operation technology.2)It breaks through the bottleneck of mechanized safe and rapid construction of super long section highway tunnels through the innovation and application of safe and rapid construction technology.3)By innovating and applying single-layer lining support technology for highway tunnels,a single-layer lining support system for hard rock highway tunnels is constructed.4)Through the promotion and application of natural energy technology in highway tunnels,the green and low-carbon operation of ultra long highway tunnels is explored.
expresswaysuper long tunnel groupsafe and rapid constructionsmart and energy-saving operation
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