Longwall Mining Method and Design - 911 Metallurgist

Longwall Mining Design FactorsArching Theory in MiningGate Road Pillar DesignYield Pillar ApproachConventional Longwall Mining ApproachOrientation of Gate Roads and PanelsMULSIM/NL ModelingCrossing A Gob-Solid Coal BoundaryIsolated Gate Roads Above PanelSeam SequencingThe sequence in which the seams will be mined is the first fundamental decision confronting mine planners. In the past, coalbeds were mined in no particular order with regard to controlling interactions and reducing ground control problems. Seam sequencing was based mostly on ecoInteraction for Descending OrderA descending order of extraction is considered the most preferable practice for optimum control over seam interaction. Seams sequenced in this order are impacted by stress transferred from overlying gate road pillars, gob- solid coal boundaries, and isolated barriers. Referred to as pilla在911metallurgist上标记:Longwall MiningLongwall Panel标记:Longwall Mining MethodCoal标记:Longwall Mining MethodCoal标记:Longwall MiningCoal