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Discontinuities such as beddings, faults and joint sets usually have important role in rock slope stability analysis. Indeed, they can change a rock mass to a blocky system. First of all, in the application of different slope stability analysis methods, the blocks must be absolutely determined in geometrical shape and defined in form of polyhedron. A 3D geometrical model of jointed rock mass, including a set of simulated geotechnical blocks, can be generated considering constraints of the model boundaries and geom...

There are some limitations and constraints in application of algorithms developed to optimize open pit limits. Therefore, it is normal to develop new algorithms to decrease existing limitations and increase their capabilities. In this paper, the key group concept which mainly use for stability slope analysis is used to develop a new algorithm named “KG-PLO” to optimize open pit limits. The KG-PLO is implemented on an especial type of the economic block model of the mining area. The algorithm can present the tr...

Short-term production scheduling determines the sequence of block extraction over time spans of shift, days, weeks or months. The aim of scheduling is to decide which blocks of ore and waste to mine in which time period so that several operational and geometrical constraints can be satisfied simultaneously- like mining and mill capacity, meeting grade requirements, making long-term mine plans operationally feasible, etc. Since the 1960s several operational research based approaches have been developed. In order to...