Comparative Analysis Rock Mass after Explosions in the Quarry Liqhobong

The article provides a systematic analysis of the research results of rock mass granularity, including theoretical studies and generalizations of experimental studies, as well as methods of computer technology. The problem of determining the main cause of a large number of oversize at the Liqhobong quarry was solved, the methods used were analyzed and compared with each other, in accordance with factors such as the availability of the method, the difficulty of implementation, and the time factor. Analysis of digital images of explosions were obtained with a digital camera and processed in the software Split Desktop 4.0. In addition, rock fragmentation data were collected through the collection of data from eight drilling and explosive operations. Based on the results of this work, it was revealed that the oversize yield for explosions at the lower levels of the southern part of the quarry was higher than for the explosions that were made at the upper levels of the north of the quarry. Therefore, we can conclude that it is necessary to apply different methods of blasting in the south and in the north of the quarry. © Published under licence by IOP Publishing Ltd.