Deformation-Wave Processes under Production Face Advance in Coal and Rocks
G. YA. POLEVSHCHIKOV
Institute of Coal, Siberian Branch, Russian Academy of Sciences, Leningradskii pr. 10, Kemerovo, 650065 Russia
Keywords: geomechanics, production face, movement, waviness, hierarchy of structures, elastic energy
Abstract
The article reports the integrated assessment of natural stresses in rock mass in the Nurkazgan Mine. The visual observation of underground excavations and instrumental measurements of effective stresses denote the hydrostatic stress state within the studied minefield. The article shows the deformation-wave behavior of geomechanical processes induced by coal production face advance. The enclosing rock mass response is interpreted as the formation of hierarchy of geomedium elements in the continuum subject to excess elastic energy behind the front of the vertical stress decrease. Parameters of the physical model of the process are given in terms of mine-technical situations.
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