Analysis on the Key Points of Management and Control of the Whole Process of Pipe Jacking Construction at Subway Entrances and Exits in Soft Soil Stratum
Taking the pipe jacking construction at the No.4 entrance and exit of Fenghuangchi Station of Fuzhou Metro Line 4 as the background,this paper introduces the key points and control measures of the whole process of pipe jacking in soft soil strata from the origin to the receiving construction.The construction quality and safety are ensured by controlling earth pressure,jacking speed,amount of earth excavated and grouting pressure.The results show that the injection method of combining thick slurry and thin slurry can better control the surface and pipeline settlement;through monitoring data analysis,it is found that the surface settlement and pipeline settlement during the entire construction process meet the control requirements.
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