To ranking of factors which influence the occurrence of rock bump at underground development of coal beds
In the article using statistic methods of analysis the ranking of factors which influence the occurrence of rock bump is given. On the basis of this it is shown that control of rock bump hazard has to be carried out in compliance with the distance from a pit-face in the cleaning works influence area. It was stated that with the highest probability rock bumps become apparent at the distance of 100 mfrom the mining works site.