A New Type Waterproof and Drainage System For Highway Tunnel

A New Type Waterproof and Drainage System For Highway Tunnel and It's Construction Technology Mao Zheng-junLecturer, School of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054 P.R. China;a. Key Laboratory of Highway Construction and Maintenance Technology in Loess Region, b. Shanxi Key Laboratory of Highway Construction & Maintenance Technology in Loess Region,