MODFLOW在淮北地下水数值模拟中的应用

Application of MODFLOW in groundwater numerical simulation in Huaibei city

针对淮北地质构造极为复杂,区内存在三个复式褶皱构造并发育多条断层和多层含水层,且区内个别地层还存在缺失现象的情况,应用VisualMODFLOW建立研究区地下水流数值模拟模型,并利用软件自身提供的墙体边界模拟断层,非活动单元屏蔽掉缺失的地层,可很好地模拟上述现象。通过模型调试,将地下水位实际观测结果与数值模拟计算结果较好地吻合,证明这种建模方法是合理的和有效的。

The geological structure is very sophisticated in Huaibei city, where there are three complex folds, several faults and multi-layer aquifers, furthermore, several of strata layers are the phantoms. For these phenomena, a model of groundwater numerical simulation is set up, which could analogue the above phenomena very well through application of Visual MODFLOW, in which the faults are simulated with the wall boundary tool offered by MODFLOW itself, the phantoms screened by inactive cells. After calibration of this model, the groundwater level monitoring results could be fit with the calculation better. The results show that this method of modeling is rational and effective.