Sublevel caving under protection of ore-and-barren rock cushion during transition from open pit to underground mining

Challenges for Development in Mining Science and Mining Industry

Konurin, A.I.^1 ; Shchukin, S.A.^1 ; Neverov, S.A.^1 ; Neverov, A.A.^1

Chinakal Institute of Mining, Siberian Branch Russian, Academy of Sciences, Novosibirsk, Russia^1

关键词: Analytical calculation;    Geotechnology;    Large blocks;    Optimizing parameters;    Ore recovery;    Sub-level caving;    Transition from open pit to undergrounds;    Transition period;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/262/1/012033/pdf
DOI  :  10.1088/1755-1315/262/1/012033

来源: IOP

【 摘 要 】

These studies aimed to evaluate an efficient method of ore mining under open pit bottom during transition from open pit to underground mining. In the transition period and further mining with the sublevel caving method, it is proposed to use a protection in the form of an artificial large-block ore-and-barren rock cushion (capping) created by partial caving of benches and bottom of open pit. The analytical calculations and modeling performed for optimizing parameters of geotechnology and ore discharge provide indexes of ore recovery completeness and quality.