Space-time principles of reducing stripping in furrow pits

Shixiong Zhang, Guozhu Zeng, and Tao PengCollege of Resources and Environment Engineering, Wuhan University of’Technologv, Wuhan 430070, China

摘 要：<正> The lower slope of furrow pits has following special features: small extent of weathering destruction, short time of production blasting damage, good arching effect of lower slope with small curvature radius, and good bottom effect of a pit end for transferring and bearing initial horizontal stresses in lower slope. The new principles provided theoretical basis for convex slope in furrow pits to reduce stripping. Similar phenomena and examples are supplied simultaneously.

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