Ore Pass Design - A Modeling Study
The LKAB mining company is currently carrying out investigations for a potential continued mining at depth in the Malmberget mine. Part of this work involves design of ore passes. The ore passes are a vital part of the transportation chain, and has, historically, been subject to extensive instabilities leading to closing and re-development of ore passes. The objective of this project was to: (i) validate rock mass strength and stress state, and (ii) determine the optimal orientation and location of ore passes with respect to the effects of wear (geometrical changes) and stress-induced failures in the ore pass walls.