Some experience resulting from mine rockbursts in Ostrava-Karvina Mining District in the period following the commencement of the contraction of coal production

摘要

The mining inducted rock bursts in OKR still represent a serious danger particularly regarding to the continuously worsening mining conditions.The natural, geomechanical and technical factors which are connected with the rock bursts in the last 13 years was described in the 1st part of the paper in the previous issue. The actual 2nd part is focused on the evaluation of these factors and their influence on the rock burst occurrence.