Performance of Dynamic Support System in Highly Burst-prone Ground Conditions at Vale's Copper Cliff Mine: A Case Study

摘要

The Copper Cliff underground nickel mine, owned and operated by Vale Canada Ltd., is located within the Copper Cliff Offset in the limits of the city of Greater Sudbury, Ontario, Canada, (Figure 1). The Copper Cliff Offset extends about 8 km south from the Sudbury Igneous Complex into the footwall rocks. Of all the major geological structures present at Copper Cliff mine, two structures are known to be seismically active: the 900 orebody cross fault, which strikes east-west and dips at about 55° north; and the Quartz Diabase Dyke (trap) located between the 100 and 900 ore-bodies striking east-west and dipping steeply north (Figure 2).