the mined seam 2 From Large the downward mined movement. seam Characterised to by extensive about conjugate shear 1w fracturing with above numerous open the fractures, mined particularly seam around the margins of the zone, and numerous inclined fractures throughout. Complete drainage of groundwater. The interface between this zone and the less disturbed strata above and to the sides of this zone accommodates some relatively large differential movements for rock strata within a short distance. This interface zone is characterised by open shear fractures and fractures between rotated blocks of intact material. 3 From Transitional 1 to ground 1.6w movement. above Vertical opening the of horizontal mined bedding planes seam with horizontal fractures being dominant in
the mined seam 2 From the mined seam to about 1w above the mined seam Large downward movement. Characterised by extensive conjugate shear fracturing with numerous open fractures, particularly around the margins of the zone, and numerous inclined fractures throughout. Complete drainage of groundwater. The interface between this zone and the less disturbed strata above and to the sides of this zone accommodates some relatively large differential movements for rock strata within a short distance. This interface zone is characterised by open shear fractures and fractures between rotated blocks of intact material. 3 From 1 to 1.6w above the mined seam Transitional ground movement. Vertical opening of horizontal bedding planes with horizontal fractures being dominant in
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