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隧道建设（中英文） ›› 2018, Vol. 38 ›› Issue (3): 481-493.DOI: 10.3973/j.issn.2096-4498.2018.03.017
LI Ning*, LI Guoliang
李宁*， 李国良
摘要：
LanzhouChongqing Railway is located in the uplift margin of the Tibetan Plateau, where the geological environment is very complicated and special. Based on numerical analysis and field tests, the physical and mechanical properties, microstructure, and complicated waterrelated stability of the Tertiary sandstone are studied. A comprehensive dewatering system integrating deep surface wells and vacuum light well points in tunnel is used and the construction technique featured with advance reinforcement by horizontal jet grouting for the fullface of aquiferous silty fine sand tunnels is invented to solve the problem of the Tertiary quick sand. In addition, the classification method for deformation potentiality in design and dynamic adjustment in construction of tunnels in high geostress soft rock is established, the deformation control technology combining active stress release and passive control according to the deformation mechanism is developed, an automatic realtime monitoring system for operation is invented, and a complete technological system of design, construction, and operation management of soft rock tunnels is built. Moreover, the TBM equipment parameter design principles are put forward, the parallel lining and multistage belt conveyor mucking system is researched, the phased ventilation technology is invented and thus the problem of safe and fast longdistance construction by largediameter TBMs is solved. The technological achievements have filled in gaps and facilitated development of the tunnel construction technology.
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