以华北平原中部咸淡水过渡带的多层含水系统（第I含水组底部至第II含水组顶部的含水系统）为研究对象，建立了地下水位-水质分层监测系统。通过在多层含水系统开展分层分级抽水试验、微水试验以及分层示踪试验等现场综合试验，借助解析法和数值模拟识别法等多种手段确定各分层水文地质参数。求参结果表明：第I含水组底部含水层渗透系数为4.320～7.550 m/d，储水系数为4.53×10-4～2.19×10-3；弱透水层渗透系数为2.20×10-3～7.65×10-3 m/d，纵向弥散系数为0.023～0.428 m2/d，纵向弥散度为0.010～0.051 m；第II含水组顶部含水层渗透系数为0.142～0.929 m/d，储水系数为4.53×10-4～2.19×10-3。

A multi-layer groundwater level-water quality monitoring system has been developed to investigate the aquifer-aquitard system that is located from the bottom of 1st aquifer to the top of 2nd aquifer, across the saltwater-freshwater transitional zone in the North China Plain. Based upon those boreholes, a series of in-situ tests have been carried out such as the pumping test, slug test, as well as tracer test in different layers. The hydrogeogical parameters in the aquifer-aquitard system have been obtained using the analytical method and numerical simulation method. The results show that the hydraulic conductivity and the storage coefficient at the bottom layer of 1st aquifer are 4.320～7.550 m/d and 4.53×10-4～2.19×10-3, respectively; the hydraulic conductivity, the longitudinal dispersion, and the longitudinal dispersivity in the aquitard are 2.20×10-3～7.65×10-3 m/d, 0.023～0.428 m2/d, and 0.010～0.051 m, respectively; and the hydraulic conductivity and the storage coefficient at the top layer of 2nd aquifer are 0.142～0.929 m/d and 4.53×10-4～2.19×10-3, respectively.

基金项目：国家重点基础研究发展计划（973计划）（2010CB428802）