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Fundamental and applied issues of mining

2019 year, number 1

SURVEY OF HARD ROCK MASS FOR THE PURPOSE OF SUSTAINABILITY IN ORDER TO ELIMINATE THE ACCIDENT CONSEQUENCES

S. N. Zharikov, S. S. Taranzhin, V. A. Kutuev
Institute of Mining, Ural Branch of Russian Academy of Sciences, Yekaterinburg, Russia
Keywords: Взрывные работы, структура скального массива, направления залегания систем трещин, массив горных пород, сейсмическое воздействие взрыва, сейсмоустойчивость горных пород, Blasting, solid rock mass structure, direction of crack system occurrence, rock mass, seismic effect of blasting, seismic resistance of rocks

Abstract

The impact of seismic vibrations from blasting in the Biyankovsky gravel pit and from passing trains on the rock mass has been estimated. The beginning of work is associated with an accident that occurred in summer of 2017, as a result of which two carriages derailed. The fractured structure of the rock mass was studied, and sustainability of hard rock mass jointings within the Ashinsk track maintenance section was estimated. It was established that recorded seismic vibrations in rockfall areas were less dangerous for disturbing the rock stability than the geological features of hard rock mass, which caused inrush. Recommendations are given to prevent rock debris from rolling out onto railroad tracks.