Combination Of Grouting Technique In The Research And Application Of Railway Tunnel Rich Water

The broken shallow tunnels frenquently appear in the actural project, to solve the problem of such works, the vertical grouting method have become imperative. The history of the development of tunnel shallow, the mechanical properties of fragmentized wall rock and the vetical grouting theory are carried out a systematic exposition, the main influencing factors of the settlement of tunnel vault are analyzed and summarized, on the basis, the effects of parameters on the tunnel vault deposition and its machanical properties are studied by theoretical analysis, numerical simulation and in-situ test and so on. Conclusions are as follows.Firstly,The high hydraulic pressure of tunnel is studied. The research emphasis is the development of material、grouting mechanism、quality testing and so on. Seeondly,The paper study design of complex grouting technique and parameter.Finally,The paper shows the practicality and application value of complex grouting technique.