火电厂贮灰场地下水环境预报数学模型

详细信息

Mathematic model prediction on the groundwater pollution of ash lagoon

摘要: 建立了火电厂贮灰场地下水环境预报数学模型，其中浓度场的模拟采用欧拉─拉格朗日方法和九结点高次有限元插值，与之耦合的非稳定地下水流速场则采用混合有限元新方法求解。因此，该模型关于浓度和流速的模拟均具有高精度。对某电厂曹海灰场中F-和SO_4~2-等污染组分在地下水中的运移扩散作了二十年长期预报。模型考虑了场源浓反随时间的变化，大气降雨等多种因素，并反映了停止冲放灰水之后地下水缓慢的自净过程。
- 贮灰场,地下水污染,浓度,混合有限元法
Abstract: This paper presents a groundwater pollution mathematic model on the ash lagoon of thermal power plant. Simulating groundwater quality adopts the Euler - Lagrange viewpoint, characteristic line method and 9 - node high - order finite element interpolation; and simulating groundwater flow adopts a new mixed finite element method. So this model has high precision. The transport, dispersion and concentration variation of the F-, So42-constituents of ash in groundwater were predicted as long as twenty years for Heze power plant.
- ash lagoon, groundwater pollution, concentration, mixed finite element method