NTIS: PB/263-133 Available for Reference At Bureau Libraries :358 pages
This report provides an engineering design for a coal mine roof simulator for research and testing of artificial roof supports used in longwall coal mining. Various configurations were investigated resulting in a final design incorporating a three-platen force applicator to simulate mine roof loading. Each platen is designed for a 2-million-pound compressive force and a 250,000-pound shearing force. The basic configuration simulated displacement of mine roof in four degrees of freedom: vertical, lateral, tilt, and twist.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB/263-133 Available for Reference At Bureau Libraries
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