The Subway Station In Nanning Qingchuan Underground Continuous Wall Construction Technology Research

The Nanning subway No.1 line Qingchuan station construction of underground continuous wall as an example,under complicated geological conditions of underground continuous wall construction technology for comprehensive research and analysis,reasonable arrangement and control,effectively solve the corresponding problems and contradictions,to efficiently complete the underground continuous wall and main structure to provide a guarantee.Qingchuan station geological condition is relatively complex,high underground water level,from east to West stratigraphic changes greatly,it is the surface miscellaneous fill,silty soil,clay layer,powder sandy soil,water rich sand and gravel layer,mudstone and silty mudstone,silt and gravel for construction of underground continuous wall effect,through the process of the corresponding control,better solve the construction in bad strata,very good to ensure the smooth construction and quality of underground continuous wall,at the same time to carry out the follow-up of the structure of the main construction has provided a guarantee.Provide the reference and experience to the similar projects.In this paper,the research and analysis of the underground continuous wall,the paper summarizes the process control of the guide wall,the production installation,the installation of the steel cage,the actual ratio of the underground continuous wall,the integrity of the underground concrete pouring,the underground continuous wall.Explore the accumulation of underground continuous wall in the process control aspects of the integrated construction technology in the process of control,the emergence of the various quality problems,and puts forward the corresponding effective measures to improve,especially for the underground continuous wall joints appear leakage and mud sand to take quick counter pressure balance grouting method,greatly reducing the cost of defects,to win valuable time,winning the recognition and good social influence.Also increased the level of scientific and technological development of enterprises.The analysis and summary of the successful control method,the ability to improve the completion of the underground continuous wall,the structure of the main structure of the follo w-up is relatively smooth.At the same time,because of the limited ability of the author and energy,of underground continuous wall of slot to slot quality situation can not be simple and fast detection and master,is currently in the field of development direction.On the problem of detecting the integrity and quality of underground continuous wall,it is urgent to solve the problem of detecting frequency and detection method.Expected future similar projectconstr uction to better develop and improve.