RATIONALIZATION OF DEEP BOREHOLES DRILLING IN THE CONDITIONS OF PJSC “ZAPORIZSKYI IRON-ORE PLANT”

Abstract

Purpose. To develop effective approach to determination of parameters of deep boreholes location which would consider stress of the ore massif in the course of layers breaking. Methods. It has been established that energy method is accepted as the main method of research conducting. The method of determination of parameters of drilling-and-blasting operations for secondary stopping chambers was developed as a result of modeling and comparison of the received results with data of production activity. Findings. As a result of the study, a new effective approach was developed to determine the parameters of the location of deep wells, which would take into account the stress state of the ore mass during the blasting of layers. The results obtained allowed the development of a technological scheme for the improvement of drilling and blasting operations in secondary chambers, taking into account the effect of cleaning works in primary chambers. Originality. The energy method is accepted as the main method of research conducting. The method of determination of parameters of drilling-and-blasting operations for secondary stopping chambers was developed as a result of modeling and comparison of the received results with data of production activity. Practical implications. We developed the system for develop effective approach to determination of parameters of deep boreholes location which would consider stress of the ore massif in the course of layers breaking. The economic efficiency of rationalization of works on primary and secondary ore crushing is established.