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Elastic Mechanical Solution of Stress Distribution in Roof in Mining Horizontal Deposits
When mining horizontal or inclined ore bodies with stable surrounding rock and ore, the comprehensive method and room-column method are widely used according to the thickness and scale of the ore body. In this case, the exposed area of the space by limiting recovery to maintain the stability of the mining space, by virtue of their strength rock stope support spatial structure, according to the specific circumstances and rock mass, structure, and with the bolt, a metal net, and the like Anchor Auxiliary support to improve the stability of the surrounding rock of the roof. Stope reasonably determined by structural parameters of the tensile stress does not occur in the top plate, the pull or tensile stresses occurring below the body of roof. At the same time, the compressive stress and shear stress at the joint between the top plate and the pillar should be lower than the compressive and shear strength.