Recent Insight into Longwall Strata Movements Deduced from Subsidence Analysis
Using an inverse application of the traditional influence function technique, surface displacements are used to analyze some of the movements of the intermediate roof strata in a longwall panel. The primary hypothesis developed proposes the existence of an area of partial roof caving near the edge of a panel called the edge effect. A secondary hypothesis promotes the importance of the effect of gate entry closure on strata movements. The hypotheses are extended to provide an explanation of the subsidence interaction of adjacent longwall panels in what is termed a redisturbed effect.
K. A. Heasley and L. W. Saperstein, "Recent Insight into Longwall Strata Movements Deduced from Subsidence Analysis," Mining Engineering, Society for Mining, Metallurgy & Exploration Inc. (SME), Jan 1987.
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© 1987 Society for Mining, Metallurgy & Exploration Inc. (SME), All rights reserved.
01 Jan 1987