2015•Mining Research and DevelopmentRequires access
Research of Best Stope Structure Parameters in Xiagao Iron Mine
Lei Gan
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Abstract
Non-pillar sublevel caving method was used in Xiagao Iron Mine.In order to meet current trend of large-scale mining equipments,large structural parameters were applied in stope to improve ore production and reduce mining costs.Systemic researches and analysis were carried out on large structural parameters by simulation experiments.It was concluded that the optimal spacing was 15 mand the best caving step was 1.4 m under the sublevel height of 15 m.Meanwhile,reasonable cut off grade and management mode for ore drawing were determined.