Basic regularities governing the subsidence of undermined rock strata and deflection of hanging up roof at shallow and great depths

Autor:	K. N. Trubetskoi, M. A. Iofis, S. V. Kuznetsov, V. A. Trofimov
Rok vydání:	1999
Předmět:	Geomechanics Deflection (engineering) Geology Geotechnical engineering Stress distribution Geotechnical Engineering and Engineering Geology Rock mass classification Mineral resource classification Roof
Zdroj:	Journal of Mining Science. 35:209-215
ISSN:	1573-8736 1062-7391
DOI:	10.1007/bf02550236
Popis:	The influence exerted by depth of seam mining on the displacements of rocks and the formation of zones of tensile stresses is studied. Results are presented for the analytical and numerical solution of corresponding problems of geomechanics, on the basis of which regularities governing the subsidence of the daylight surface, roof deflection, and floor rise, and variations are also established for the parameters defining zones of vertical and horizontal stresses above the working. The boundaries of shallow depths in relation to the span length of working with hanging up roof are determined where regularities of the undermined strata displacement and stress distribution differ in essence from corresponding regularities at great depths.
Databáze:	OpenAIRE
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