Research Of Draining And Waterproof Methods For Waterproof Tunnel

According to researching the existential state and distributing regular of Groundwater in different kinds of water-bearing media, the construction techniques and working conditions of draining and waterproof methods for tunnel was summarized.Taking example for JiuBao tunnel in new railroad line from ZhangJiaKou to JiNing, the defect of design idea for giving priority to drainage of groundwater disposal was expounded;the engineering measure for draining and waterproof methods to groundwater disposal of waterproof mountain tunnel was advanced.The simplify model of caulking water and limiting drainage method for outer water-pressure of lining was analyzed;the relationship of water displacement and outer water-pressure of lining of JiuBao tunnel was also analyzed;proper thickness of injected ring in prescriptive discharge was advanced;some kinds of injected method was expounded. According to calculating result, the effect of injection for stratum was pointed out. After setting drainage system, outer water-pressure of lining should be considered in lining structure design.According to the analyses of engineering geology condition and hydrologic geology condition of JiuBao tunnel, the basic engineering technical standard and engineering methods were conformed, and some conclusions of drainage and waterproof methods for waterproof mountain tunnel were found.