Abstract：Taking the oval-shaped rock circle which is on the slope of an oval-shaped furrow pit as an example and supposing that the stress in circle direction of the rock circle is equal at every point，the stable slope configuration is derived for the oval-shaped furrow pit under the conditions，that is，the rock mass is continuous，homogeneous and elastic，it is only loaded by its dead weight is excavated as an oval-shaped trumpet. A great quantity of stripped waste rock can be reduced by the slope configuration determined by the proposed model，as compared with that determined with the traditional theory of slope stability.
