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Determination of Shear Strength Parameters of Slope Rock Mass in Open-Pit Mine
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Hong LIU1, Minghua DONG2, Zhaofei ZHANG2, Lei WEN3
Mining and Metallurgical Engineering | 2023, 43(3) : 6 - 10
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Mining and Metallurgical Engineering | 2023, 43(3): 6-10
• MINING •
Determination of Shear Strength Parameters of Slope Rock Mass in Open-Pit Mine
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Hong LIU1, Minghua DONG2, Zhaofei ZHANG2, Lei WEN3
Affiliations
  • 1.Yichun Luming Mining Co Ltd, Yichun 152500, Heilongjiang, China
  • 2.China Railway Resources Group Survey and Design Co Ltd, Langfang 065000, Hebei, China
  • 3.Shijiazhuang Tiedao University, Shijiazhuang 050000, Hebei, China
Published: 2023-06-01 doi: 10.3969/j.issn.0253-6099.2023.03.002
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The west slope of SCM copper cobalt mine in DRC was taken as an example for determining the shear strength parameters of rock mass by a laboratory triaxial compression test, back analysis of landslides, evaluation of rock mass quality and strength conversion with Hoek-Brown criterion, and then the obtained strength parameters were verified. The results show that due to the size effect of the samples, there may be deviation in the cohesion of rock mass shear strength obtained from the laboratory triaxial compression tests. It is found that with the obtained parameters used in slope stability analysis, more accurate evaluation results can be obtained from the slope model with higher sensitivity to friction angle, while lower accuracy from the slope model with higher sensitivity to cohesion. Under the same working condition, the parameters of slope rock mass obtained from the back analysis of shallow landslides can be used for analyzing local or single bench stability, and the parameters of slope rock mass from back analysis of deep-seated landslides or the landslides due to weak structural planes can be used for overall stability analysis. It is found that the shear strength parameters obtained based on Hoek-Brown failure criterion are close to the results from laboratory triaxial compression test, also easy to operate and more accurate, which can have a wide application.

slope stability  /  shear strength  /  triaxial compression test  /  back analysis of landslide  /  Hoek-Brown failure criterion
Hong LIU, Minghua DONG, Zhaofei ZHANG, Lei WEN. Determination of Shear Strength Parameters of Slope Rock Mass in Open-Pit Mine[J]. Mining and Metallurgical Engineering, 2023 , 43 (3) : 6 -10 . DOI: 10.3969/j.issn.0253-6099.2023.03.002
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Article Info
doi: 10.3969/j.issn.0253-6099.2023.03.002
  • Receive Date：2022-11-30
  • Online Date：2026-03-05
  • Published：2023-06-01
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  • Received：2022-11-30
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Affiliations
    1.Yichun Luming Mining Co Ltd, Yichun 152500, Heilongjiang, China
    2.China Railway Resources Group Survey and Design Co Ltd, Langfang 065000, Hebei, China
    3.Shijiazhuang Tiedao University, Shijiazhuang 050000, Hebei, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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