针对水位观测井响应滞后问题,以井外壁水位为正弦函数变化为例,分析了观测井井壁内外的水力平衡条件,构建了井内壁观测水位与井外壁真实水位间的解析关系,采用优化的最小二乘法对观测数据进行最佳多项式拟合,获得了逼近于真值的数据。结果表明,该方法观测值再现真值合理,计算简单、精度高。 In view of the response lag of observation wells in water level, taking the variation of the outer wall water level as the sine function, the hydraulic balance conditions inside and outside the observation well wall are analyzed, the analytic relationship between the observed water level inside the well wall and the actual water level of the well wall is established, The least square method is used to fit the best polynomial to the observed data and get the data approaching the true value. The results show that the method has the advantages of reasonable truth value, simple calculation and high accuracy.