GROUNDWATER NUMERICAL SIMULATION OF MULTI-AQUIFERS IN SONGNEN PLAIN

摘要

Songnen plain is located in the centre of Northeast China, and the aquifers in the area are simplified as Quaternary unconfined aquifer, Quaternary confined aquifer, Noegnene Taikang and Da'an group confined aquifers. The numerical model of groundwater system in Songnen plain is set up with the software GMS, which includes four aquifers and three aquitards. Parameters recognition and model verification are done with the measured data. The output flow fields of the model are basically concordance with the practicable flow fields. The dynamic curves are well fit in the typical observation wells, which show the rationality and credibility of the numerical model. Groundwater dynamic level of 2005～2020 is predicted. The simulation result shows that the groundwater exploitation will reach 1005693×104m3/a in 2020, but no bad phenomena will have taken place.Available proper scheme of utilization and development of groundwater in Songnen plain is put forward.