Study on Limit Height and its Stability of Open-Pit Dump Based on Basement Bearing Mechanism

Abstract:

This paper, which combines with the actual situation of mine, discusses the limit height and stability of the dump. Based on the basement bearing mechanism and different types of topsoil thickness, a method to calculate the height of the dump is put forward. Since the topsoil of Xichuan dump belongs to the thin type (h< h₁+h₂), and take into account of dumping technology, the limit height is determined to be 220 meters, which exceed design level (160m). And then, using limit equilibrium method based on Geo-Slope to analyze stability of the slope. The value of slope safety factor is 1.175~1.210, which is in conformity with the basic requirement of safety. In addition, the result also provides the dependable basis for the dump expansion.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 177-181
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.177
• Online since: September 2013
• Authors: Chao Peng, Dong Ji, Liang Zhao, Fen Hua Ren
• Keywords: Basement Bearing Mechanism, Limit Equilibrium Method, Limit Height, Safety Factor

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