Research On Open Mining Planning Optimization Based On Digital Deposit Model

Open-pit mining plan, also known as stripping plan or mining plan, is a very core design work in mining. Preparating a open pit mining plan is a very core design work. It is the guidance document that services for the whole mining in the number of mining. And it applies to the mine production and management, to maximize the benefits of mining enterprises. Therefore, open-pit mining plan optimization has been one of the major subjects in open-pit mining sector.This article is based on3Dmine software, using cone deduction algorithm model and dynamic programming algorithm model in the Digital deposit models to research the implementation of computer of optimization algorithm in open-pit mining planning, and then develop a automation, sequencing, visual VB program on stripping plan optimization.In this paper, the idea of mining planning optimization is that contoured for an open pit boundary, the first is the use of cone evaluated method to produce a series of geologically optimum pits, then takeing the geologically optimum pits as the location of the candidate of work slope Angle, and determine the location of the candidate of work slope Angle by applying dynamic programming for economic evaluation. At last we get the optimal solution, which the state mining net present value is maximum.In this paper, combined with the actual situation of large open copper pit, we apply the optimization model to optimize mining plan. Within the ultimate pit has been optimized, we can automatically get the block model data through the program. And then we can produce180geologically optimum pits, and taking them as candidates for each of the phase-pits to be designed, for example a year,to make the dynamic scheduling, get the maximizing net present value of total mining, the number of mining, the total amount of ore index etc.Using the same algorithm model and the engineering background, we also research the installment boundary mining optimization in open pit mine in this article. Within a more pit has been determined, we can produce38geologically optimum pits using cone deduction algorithm model, and taking them as candidates for a state, to make the dynamic scheduling, and get the maximizing net present value optimization scheme in periods.Considering the above theory, the optimal solution of the problem, this paper analyzes the sensitivity of the model parameters. By analyzing, summarizing, and combination of the actual situation, the paper puts forward to the strategy which makes adjustments to the model parameter settings, so that obtain the open pit mining planning optimization scheme which is more practical.