深井水位的地表荷载效应及其与含水层物理力学参数关系初探

承压深井对含水层的应力应变反映较灵敏,某些地表荷载的变化,也会引起承压井水位发生相应的变化。以前对地表荷载效应多从排除干扰的角度出发,用回归统计等数学方法求出地表荷载与水井水位变化的关系。本文以降水荷载和海洋潮汐荷载为例,利用弹性理论和地下流体动力学原理,建立地表荷载影响承压含水层水头的偏微分方程,并从这些偏微分方程的解中讨论了降水荷载和海潮荷载对深井水位的影响及其与含水层物理力学参数间的定量关系。

PRELIMINARY STUDY ON SURFACE LOAD EFFECT OF WATER LEVEL IN DEEP WELL AND ITS RELATIONSHIP TO PHYSICAL MECHANICAL PARAMETERS OF AQUIFER

Taking the precipitation load and the oceanic tide load as example, we have established the partial differential equation of the effect of the surface load on the pressure head in the confined aquifer accoraing to the elastic theory and the theory of underground fluid dynamics. In this paper the effects of the precipitation load and the ocean tide load on the water level in deep well and their quantitative relation to physical mechanical parameters in the aquifer have also been discussed by analysing the solutions of the partial differential equation.