基于轴比论的椭圆形深凹露天矿稳定性边坡形状确定方法研究

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Abstract Taking the oval rock circle on the slope of an oval furrow pit for example，combining the axial ratio theory，the circle stress of the stable slope is derived for the oval deep furrow open pit under the conditions that the rock mass is continuous，homogeneous and elastic，and the rock mass is forced by the combination of weight stress and horizontal geostress. According to the determination method for getting the best axial ratio of roadway，the slope safety factor is derived with Mohr-Coulomb criterion. Based on the critical gliding conditions of micro-body in the slope，the critical stable slope angle is calculated. Therefore，the slope shape is determined. Compared with the slope shape determined by the traditional theory，this new shape can make a great reduction on the amount of peeling rock under the precise of guaranteeing the slope stability.

Key words： slope engineering deep furrow open pit slope stability axial ratio theory

Received: 31 October 2011

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http://www.rockmech.org/EN/Y2012/V31/I4/675

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