Investigation of Steep Waste Dump Slope Stability of Iron Ore Mine—A Case Study
Source abstract
Abstract
Using a combination of experimental and numerical methods, this study examines the stability of the slope of Waste Dump#1 in Ziluoyi Iron Mine. We conducted direct shear tests on soil samples taken from the waste dump, which provided important insights into slope stability. The tests identified key mechanical parameters, including an average cohesion of 4.80 kPa and an internal friction angle of 25.63°. By implementing GEO-SLOPE software, we could determine that the slope stability factor is 1.047, which is far from the required safety standards. To address this issue, we proposed an appropriate rectification strategy including the construction of safety platforms and reconfiguration of the slope structure. This approach effectively improved the slope stability factor to 1.219 and met the safety criteria. In addition, particle flow code (PFC) simulations were methodically performed to model the slope morphology and particle displacement before and after rectification. The obtained results revealed a remarkable reduction in sliding areas and particle displacement post-rectification, enhancing mine safety and efficiency. Our findings provide valuable insights into the application of combined experimental and numerical methods to assess and improve slope stability in open-pit mines, which will substantially contribute to the field of geotechnical engineering and mining safety.
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Research context
OpenAlex topics: Landslides and related hazards · Geotechnical Engineering and Analysis · Rock Mechanics and Modeling
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mines, China University of Mining and Technology, Xuzhou 221116, China
College of Environmental Science and Engineering, Liaoning Technical University, Fuxin 123000, China
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China
Huzhou New Kaiyuan Gravel Co., Ltd., Huzhou 313000, China
High Tech Research Center for Open-Pit Mines, China University of Mining and Technology, Xuzhou 221116, China
Department of Sustainability and Planning, Aalborg University, 9000 Aalborg, Denmark
Funding
National Natural Science Foundation of China
References (60)
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