Analysis of asymmetric structure around coal face of steeply dipping seam mining
WU Yong-ping
XIE Pan-shi
REN Shi-guang
Abstract：Based on the research and projects practice of mining steeply dipping seam, used results of the theoretical a-nalysis, physical simulation experiments and multi-numerical-simulation-technology, asymmetry mechanics along the tendency of working face were summarized. In the roof strata, the tendency extrusion structure and countertendency structure are formed, and different kinds of structure exist in different area along the tendency, the homo-shell structure is formed around the coalface, the envelope shape of homo-shell structure section along the tendency and strike can be described by the nonlinear quadratic function which contain the parameter coal seam dip angle, mining height, face length and roof rock properties, ect.
Keywords：steeply dipping seamsurrounding rockasymmetry mechanics characteristicstendency extrusion struc-turehomo-shell structure
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 182-184 )