Abstract
Three mining methods for full extraction in flat coal seams - i.e., longwall (LW), shortwall (SW), and rib pillar extraction (RPE) - are compared with each other in view of the introduction of a mechanized, self-advancing roof support. Features are shown according to which RPE appears most attractive under certain conditions. In this presentation, the mining methods are outlined and discussed. The new support (Alpine Breaker Line Support, ABLS) is described, and its employment is explained. A trial operation in RPE using the ABLS has been conducted successfully in a South African coal mine. The results and improvements are stated.
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