Investigation of Backfilling Step Effects on Stope Stability

• DOI: 10.20944/preprints202105.0716.v1
• Publication Date: 2021-05-31T07:20:38Z
• Authors: Huawei Xu; Derek B. Apel; Jun Wang; Chong Wei; Yashar Pourrahimian
• Keywords: Stoping; Principal stress; Safety factor

Cemented rock fill (CRF) is commonly used in cut-and-fill stoping operation underground mining. This allows for the maximum recovery of ore. Backfilling can improve stope stability workings, and then ground whole mine site. step scenarios vary from site to paper presents investigation five different backfilling their impacts on stopes at four mining levels. A comprehensive comparison displacements, major principal stress concentration factor (SCF) was conducted. The results show that have little influence final displacement stopes. Among scenarios, almost same results. scenario SCN-1 optimum option among these scenarios. It immediately prevent increase reduce sidewall concentration, thereby preventing possible failures. Using strength CRF achieve effects Applying depths acceptable feasible