Analysis And Treatment Measures Of Pouring Water In Cenxi Big Highway Tunnel

With the sustainable development of highway construction and road network continues to improve,the highway tunnel proportion in the whole traffic network is more and more important.It crosses the regional hydrological,geological condition is complex and changeable, the geological disaster problems in the construction of the tunnel is also more prominen.Especially,The Tunnel water gushing has become a very common and extremely easy to cause the serious consequences of potential engineering disaster.Once the water inrush, not only influence the tunnel construction schedule and endanger its stability and security, so that the whole project construction cost increase, at the same time, caused the decline of underground water level, affect and fhreat the safety, operation and surrounding environment after the whole project is complete.Therefore study the reason of tunnel gushing and treatment measures in the process is particularly important.In this paper, taking the Cenxi big tunnel,Guangxi Zhuang Autonomous Region as the basis, combined with site survey and measured data to analysis the tunnel water gushing formation mechanism and basic characteristics; Based on the movement regularity of groundwater, combined with the survey of Cenxi bid tunnel hydrogeological condition, structure characteristics of the surrounding rock, form,current investigation of gushing water and use adina finite element software to simulate the groundwater seepage characteristics; According to the simulative results and the actual survey data, it is proposed the treatment measures that primary blocking combining with draining off water and comprehensive management is in order to manage the problem of Cenxi big tunnel water gushing; meanwhile,it provides the curtain grouting water plugging Treatment plan of cement-soluble glass double liquid slurry grouting relying on the tunnel water gushing specific characteristics.Finally,it assesses the effect of proposal of double liquid slurry grouting according to the comparison of the tunnel displacement before and after grouting processing and discuss The constructive methods. The research can provide a reference for tunnel water gushing treatment in the future under geological conditions.