Abstract: In view of the unstable quality of ore supply in open-pit metal mines and in response to the needs of developing the intelligent mines， an intelligent ore quality control system with the combination of terrain generation and ore blending calculation was developed. The terrain generating function of the system is compiled in C++ language， and the regional skeleton structure and topographic filling are completed by using Open GL visualization platform. The grade updating of mining status model and mineral quantity statistics are realized， thus providing a basis for ore quality control. According to the requirement of ore quality optimization， the ore blending problem is described by multi-objective function， the mathematical model is constructed， and the optimization scheme is solved by genetic algorithm. The optimized scheme is displayed in the three-dimensional model system. On the basis of optimizing ore quality， the digitized and intelligent management of mine is achieved. It has important practical significance for large and medium-sized open-pit metal mines.

Key words: Ore blending, Digital mine, 3D terrain, Optimization scheme