Research And Application Of New Waterproof And Drainag E Technology In Fractured Rock Highway Tunnel

Currently,highway tunnel leakage is the frequent occurrence of tunnel diseases,in order to solve the highway tunnel leakage problems,improve highway tunnel Water Leakage phenomenon,the paper rely on Nao Zhi tunnel project,summarizes the new tunnel in the fractured rock permeability of Water Leakage frequent parts,analyzes the causes of seepage.Comparing and analyzing the commonly used mathematical model of fractured rock in practical engineering,and with the help of Midas GTS/NX making a numerical simulation of tunnel excavation.Through the analysis illustrates the crack water seepage effect on tunnel excavation,affirmed the grouting effect.Through the investigation and analysis,the paper summarizes the problems in the design and construction of tunnel water handing.Through the practice and test in the field,this paper presents a new method of laying water barrier-LV lading method,which effectively improves the shortage of the laying technology of water barrier in current highway tunnel.For the tunnel lining structure of the "three joint" existing waterproof and drainage problems,we invent a new type of water-stop ladder-shaped dorsal type water-stop and butterfly medium buried waterstop,describe in detail the principle and construction technology of water-stop,clear the specific parameters of construction technology,effectively improve the leakage three water problem at tunnel lining three seam.The three new technologies will be used as reference for the design and construction of fractured rock mass highway tunnel water handling in the future.