用水化学动力学方法分析评价苏锡常地区孔隙Ⅱ承压水超采状态下补给条件的意义

基于孔隙承压水属性，研究了苏锡常地区孔隙Ⅱ承压水超采状态下最大水位埋深期（1994年、1998年）地下水动态（水位、水质）监测资料与水文地质条件。论述水位动态虽能直观反映开采状态下水资源衰竭与水位变化特征，但对补给条件及水动力机制不清楚，则会给超采状态下水文地质条件认识及评价带来视觉上的偏颇。采用水化学动力参数则能很好地反映不同水源补给空间的变化规律，用其常量水化学组分（K+、Na+、Ca2+、Mg2+、Cl-、HCO-3、CO2-3、SO2-4）计算的离子强度（I）、主要离子活度（aHCO-3、aNa+

Analysis and evaluation of supply conditions significance of pore II confined water under over extraction in Su-Xi-Chang region with hydro-chemical kinetics

Based on attributes of pore confined water,the authors studied dynamic ( water level and quality) groundwater monitoring data and hydrogeological conditions of pore II confined water under over extraction in the periods of maximum water burial depth in the years of 1994 and 1998 in Su-Xi-Chang region. Hydro-chemical parameters could reflect the spatial variation rules of different water source supply,their ionic intensity ( I) and major ionic activity ( a HCO - 3 , a Na + , a Ca 2 + ) parameters calculated by constant water chemi- cal components ( K + 、Na + 、Ca 2 + 、Mg 2 + 、Cl - 、HCO - 3 、CO 2 - 3 、SO 2 - 4 ) divided the range and scope of seepage side pressure supply by Yangtze River,side supply by atmospheric precipitation and weak sealing well supply. The study provided bases for the deepening of extraction conditions of pore II confined water,evaluation of minable resources and dynamic prognosis of groundwater level.