An effective MIP model based on grey wolf optimizer for lot-sizing LTPSOP in open-pit mines under uncertainty

The design and scheduling of open-pit mines are considered as an important and intricate problem in mines planning. The optimal extraction sequence is obtained by the production schedule by maximizing the net present value. The long-term production scheduling optimization problem (LTPSOP) of open-pit mines is a lot-sizing, mixed-integer programming (MIP) problem that should be solved in reasonably limited time due to the operational...