地下水系统准三维流场数值模拟与流场宏观调控

郑州市长期过量开采地下水致使地下水位大幅度下降，由此引发了一系列水环境问题：１）区域地下水降落漏斗形成并不断扩展；２）大幅度增加供水难度和费用；３）导致水环境质量恶化；４）诱发地面塌陷和沉降．研究区内地下水系统（＜２５０米）可概化为浅层地下水系统和中深层地下水系统，两者通过弱透水层系统发生水力联系．本项研究根据抽象出的研究区地下水系统概念模型，建立了地下水流场准三维模拟模型．经模型校正和识别后对研究区地下水流场做了数值预报，并基于此提出流场宏观调控技术方案

Groundwater System Quasi-Three Dimension Numerical Simulation and Field Macro-Control

Long term intense extraction of groundwater in Zhengzhou City has caused groundwater levels to decline. Problems associated with the declining groundwater levels are: 1) formation and expansion of depress area, 2) increased pumping lift and pumping cost, 3) deterioration of the quality of groundwater and 4) land subsidence. Groundwater system in study area is very complex. Groundwater resources occur in three sub systems, the shallow aquifer sub system and the inter medium aquifer system are hydraulically connected by aquitarde. According to the hydrogeological conceptual model, the quasi three dimension simulation model has been established. The result of calibration and verification proved that the model can be used to forecast the groundwater flow of the studied area. Based on the result of the forecasting,the macro control scheme has been suggested.