Title: Floor Stress Distribution Laws Under Coal Pillar in Close Distance Coal Seams
Abstract: The mining roadway layout in the lower coal seam in close distance coal seam is affected by the concentrated stress caused by the residual pillar in upper layer,through the analysis of the distribution situations of the concentrated stress in the coal pillar,the force model which is closer to the real situation is put forward,then combined with the specific practice,the laws of the floor stress transfer and distribution are analyzed and the range of the stress distribution on the horizontal section of different depths in the floor strata by using elasticity theory and numerical calculation software Mathcad.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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Cited By Count: 3
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