Abstract: Traditionally, during mining complex structure carbonate deposits, the bore-and-fire technique of rocks preparation for excavation and loading works, is used. With all its advantages, the bore-and-fire technique has several disadvantages. One of its major disadvantages is absence of opportunity to conduct selective mining. Layer-by-layer milling machines enable to conduct multi-lift mining, to improve the quality of produced minerals and to improve mining safety. Establishing the dependence of the length of the mining front in open mining of complex structure carbonate deposits, with use of layer-by-layer milling machines, on the specific operational costs, will enable, in practical terms, to increase the economic efficiency of mining. The holdings having production of cement as their ultimate goal, are complex systems integrated vertically and horizontally, include at the level of mineral resource base, not only carbonate deposits but also deposits of non-ore construction materials required for covering their own needs of sand and sandstone. Application of non-blast technology of developing carbonate deposits sets the same requirements to deposits of non-ore construction materials, which are located in the vicinity of such companies. Such non-ore construction materials include deposits of sand-gravel mixture. Application of up-to-date mobile crushing and screening equipment enables to obtain sand and crushed stone from gravel and boulders without resorting to blast works near the areas where sand and crushed stone are consumed. In addition, mobile crushing and screening equipment can also be used for obtaining crushed stone from limestone produced by means of layer-by-layer milling machines. Establishing the dependence of the length of the mining front in open mining of complex structure carbonate deposits, with use of layer-by-layer milling machines, on the specific operational costs, will enable to optimize the deposit mining system and to reduce, in practical terms, costs on exploration.
Sergey Igorevich Fomin, Vinogradov Ivan Petrovich and Lapshin Nikolay Sergeevich, 2020. Determining Length of Mining Front in Non-Blast Open Mining of Complex Structure Carbonate Deposits. Journal of Engineering and Applied Sciences, 15: 94-98.