Analysis of roof and pillar failure associated with weak floor at a limestone mine [0.03%]
弱底板条件下石灰岩矿顶板和煤柱破坏规律分析
Michael M Murphy,John L Ellenberger,Gabriel S Esterhuizen et al.
Michael M Murphy et al.
A limestone mine in Ohio has had instability problems that have led to massive roof falls extending to the surface. This study focuses on the role that weak, moisture-sensitive floor has in the instability issues. Previous NIOSH research re...