OPTIMIZATION ANALYSIS ON DEWATERING OF TUNNEL CONSTRUCTION IN COMPLETELY WEATHERED GRANITE STRATUM
Based on the construction dewatering of a coastal fully weathered granite tunnel in Fuzhou,in order to ensure the safety of surrounding buildings,the comprehensive reinforcement scheme of water stop curtain,surface jet grouting pile and retaining wall is proposed.The monitoring results show that the average settlement of surrounding buildings is only 3.3 mm,accounting for 25.3％of the total average settlement,and the average inclination rate is only 0.0274,accounting for 28.8％of the total average slope.The comprehensive reinforcement method can effectively control the inclination and settlement of buildings and provide safety guarantee for tunnel construction.It can provide reference for dewatering construction of tunnel in strongly weathered granite stratum in coastal area.
strongly weathered graniteexisting buildingsoptimization of dewateringfield monitoring
万方数据
维普
