关键词: 地下水位抬升, Visual Modflow, 参数反演, 渗流场, 环境地质评价

Abstract:

After the impoundment of reservoir in plain area, the seepage around the dam changes the relationship between the recharge and discharge of groundwater, resulting in the water table rise in a certain scope and instability of residential buildings adjacent to the dam. Visual Modflow is used to establish the 3D geological model of Haibowan Reservoir area, and the parameters and boundary of the model are inversed. The inversion results indicate that the geological parameters and the model boundary condition are reasonable. The groundwater seepage field after impoundment is simulated by the model, which provides the basis for evaluating the impact of groundwater rise after impoundment; the range of environmental and geological influence is analyzed to further provide guidelines for planning of Haibowan Reservoir area.

Key words: groundwater table rise, Visual Modflow, parametric inversion, seepage field, geological environmental evaluation