地下水资源评价应用有限单元、有限差分等数值方法解地下水渗流问题,多用于水头预报。这种预报过程,主要是根据大量水位、水量等实际资料和初边值做为定解条件,经过调参使模型符合实际后,再根据预报要求得出不同时段的水头群解。这种方法,由于实际工作量大、计算时间长、影响因素复杂,这就经常迫使水文地质工作者不断探索数值法评价地下水资源的简化计算和优化处理的各种可能,以达到同 Groundwater resources assessment using finite elements, finite difference numerical methods such as groundwater seepage problems, and more for the head forecast. This forecasting process is based on a large number of actual data and initial value of water level and water as the fixed solution conditions, after adjusting the parameters to make the model in line with the actual situation, then the head solution of different periods is obtained according to the forecast requirements. This approach, often characterized by heavy workload, long calculation time and complicated influence factors, often compels hydrogeologists to continually explore the possibilities of simplifying the calculation and optimization of groundwater resources using numerical methods to achieve the same