Cut slope reinforcement technique in open-pit mines

Yongtao Gao, Jianbo Sun, Shunchuan Wu, and Aibing JinCivil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, ChinaHighway Development Limited Company of Henan Province, Zhengzhou 450052, China

摘 要：<正> The design and practice in supporting the cut slope of an open-pit mine were introduced, in which the high pressure grouting method was used in reinforcing the weak formation in the slopes. Based on a detailed geological survey of the slope, a theoretical analysis was carried out, and the design parameters were proposed, where the Tresca or Mohr-Coulomb yield criteria was employed. A patent technology, named "Technology of high pressure and multiple grouting in different levels within a single hole", was employed in the construction. Anchor bars were also installed as grouting proceeds. This method combines anchoring and grouting comprehensively and was found successful in practice.

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