Materiały konferencyjne SEP 2018

XXVII SCHOOL OF UNDERGROUNDMINING 2018 , Cracow, Poland INTRODUCTION  The bolting systems were initially applied in Ostrava-Karvina Coalfield in the sixties (mechanical wedge bolting system)  Fully encapsulated rockbolts were firstly used in the seventies  Bolting system has not been applied extensively in both cases due to low efficiency of drilling procedure afterwards  The bolting systems were applied within trial run of entry working method at the CSM Mine in 1994–1997. This method has been ceased after driving 3 kilometers of roadways due to technological problems of bolter miner