Materiały konferencyjne SEP 2018

XXVII SCHOOL OF UNDERGROUNDMINING 2018 , Cracow, Poland GEOMECHANICAL EVALUATION - GEOTECHNICAL SURVEY Investigated data:  Properties of overburden rock (2x Width of roadway)  Properties of coal seam  Thickness of seam, dip of strata, depth  Lithological profile, beding plane, fracturing of core  Unaxial strength of rock and seam  Quality of fractures and beddding planes  Watering of rock mass