Abstract:

Confined pore and fissure aquifer in Cretaceous bedrock is one of the main aquifers in Changchun area and the hydrogeological conceptural model can be simplified as anisotropy and heterogeneity. According to the movement’s feature of groundwater system, the mathematic model of three-dimensional transient flow is assumed and generalized difference method is used to solve the flow equations and the groundwater flow model has been calibrated and verified. The model simulation result is in accordance to the actual hydrogeologic condition and the caculated water table is consistent to the monitored water table. The results can provide a scientific theoretical foundation for sustainable management of groundwater resources in the study area.

Key words: bedrock, pore and fissue, generalized difference, caculated water table, measured water table