地下水システムのモデル同定とその最適運用に関する研究

Abstract

The aim of this study is to establish the identification of model parameters of groundwatersystems and the conjugative management between the water resources systems, such as dam res-ervoirs, pumping wells and recharging wells. Especially, we introduce the multi-level optimizationmethod (Goal Coordination Method) to solve the identification and management problems ofcomplex water resources systems.In the identification model, after formulating goundwater systems by three dimensional multi-cell model, the total system can be arbitrarily divided into several subsystems. Then, the optimalvalue of model parameters of confined or unconfined aquifers will be decided by iterative calcula-tion of parameter identification in subsystems and interaction balance in total system. On theother hand, management or operation model is decomposed into surface water systems andgroundwater systems. Each subsystem is optimally controlled by using Linear Programming orNon-Linear Programming. Total control policy will be also gained in the basis of multi-leveloptimization method.These approaches are applied to a part of the Nara basin for verification of theory. And wediscuss their effectiveness and limitation.