地下水位前兆敏感水力学条件的数值模拟研究

根据弹性孔隙理论，利用数值分析的方法，研究了承压含水层对井水位的映震效果的影响，模拟结果显示：含水层系统的封闭状态对水位的映震效果有很大的影响，侧漏的大小和水头的高低会直接影响水位的观测效果，在系统封闭很好的情况下，观测水位的变化基本与水头的变化呈线性关系，此外，含水层系统的渗透性也是影响水位变化的重要条件之一，渗透性好则水位的映震效果明显。

NUMERICAL SIMULATION OF HYDRODYNAMIC CONDITION RELATING TO PRECURSORY SENSITIVITY OF UNDERGROUND WATER LEVEL

On the basis of the theory of elastic crack,the reflecting earthquake effect of well water level in the confined aquifer is studied by using numerical simulation method. The simulated results demonstrate that the confining condition of well water bearing system has heavy influence on reflecting earthquake effect of water level change,and the observation quality is directly affected by the leaking level on the sides of aquifer and the height of water head.When the system is confined well,the change of observation water level has a linear relation with water head change.Moreover, for earthquake prediction purpose, in a good well water bearing system the good penetrability is also one of the important factors to affect water level change,it is effective if the system has a high penetrability.