Martynenko V. Scientific foundation and development of ecologically oriented mining technologies at iron ore enterprises

This thesis is devoted to the problems of theoretical foundation ore deposits in Ukraine aimed to form mined - out space in deep guarries for re- excavation of enclosing rocks. New trends of developing working zones in guarries with help of inclined seams and diagonal pannels have been developed. Parameters which provide minimum extraction of overburden rocks without decreasing productive efficiency with regard to iron ore have been established. Methods of increasing rock breaking efficiency by blasting and intensity reducing of dust and gas emission into atmosphere have been developed. Economic - mathematical models of forming recess zone by using combined types of transportation with mobile relloading eguipment have been created. For the first time parameter calculation methods of different type enclosing rock total location in mined-out space of deep guarries are based.Ways of conservation of technogen deposits and methods of damaged area recultivation have been developed. The main results of thisth esis have been tested in mine design and at mining enterprises applying new technologies and eguipment for mining operations with minimum environmen- influence.