垂向和径向排水的潮汐水位振幅和位相变化研究

本文根据岩石力学和地下水动力学理论, 分析了潮汐力作用下含水层与隔水层之间垂向水流交换过程, 并提出了垂向排水条件下含水层潮汐孔压-引潮高振幅比和位相差公式。 结合Hsieh等关于潮汐力作用下井水位对含水层孔压(体应变)的振幅比和位相差响应公式, 进一步推导了垂向和径向水流条件下井水位-引潮高的振幅比和位相差公式。 在径向和垂向排水条件下, 应用M2和O1波潮汐水位-引潮高振幅比和位相差的数值关系, 可以识别影响潮汐水位振幅和位相的主要因素。

Tidal Water Level Amplitude and Phase under the Condition of Vertical and Radial Flow

Under tide stress, vertical groundwater flow between aquifer and aquiclude is described based on rock mechanics and groundwater dynamics theory, the amplitude ratio and phase shift are presented for pore pressure generated from tidal force and tidal height under vertical flow. Combined with Hsieh's theory (1987), formulas for calculating amplitude ratio and phase shift for water-level and tide-height is derived under condition of vertical and radial flow. The formulaes are applied to identify the main factors affecting water-level amplitude and phase by comparing their values under M2 and O1 tide stress.