Portal Stability In Rock

Rogers, G. K.
Organization: International Conference on Ground Control in Mining
Pages: 8
Publication Date: Jan 1, 1988
Email to a Friend Abstract
Portals, which are the surface entrances to underground excavations, are frequently overlooked and often difficult areas In terms of ground control. Failures commonly occur In the typically high angle approach cuts and Initial subsurface portion of the portal. In order to permit rigorous design of all types of portal structures, failures are Identified and subsequently classified. Based on the failure classification and suggested analysis methodology, optimum ground and support loading can be determined.
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