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以武汉地铁二号线虎泉站至名都站区间施工监测数据为基础,运用Logistic时间函数模型,对由地铁区间隧道开挖引起的地表沉降曲线随时间变化规律进行拟合分析。根据拟合结果,确定了该区间隧道开挖过程中沉降量Logistic时间曲线的5个关键点及3个未知参数,从而建立了针对该区间隧道地面沉降的Lo-gistic时间预测经验模型,将该模型用于预测得到了很好的预测结果。
Based on the monitoring data of interval from Huquan station to Meidu station of Wuhan Metro Line 2, the logistic time function model was used to fit and analyze the variation law of surface subsidence curve caused by tunnel excavation in time. According to the results of fitting, five key points and three unknown parameters of logistic time curve of subsidence during tunneling are determined, and a Lo-gistic time prediction empirical model for the subsidence of the tunnel is established. The model is used to predict good predictions.