Deformation based hanging wall failure prediction

露天采矿法是加拿大最常用的采矿方法之一，因为加拿大盾构的岩石类型坚固，生产率高，与这种采矿方法相关的采矿率也很高。以采场稀释或采场表面整体破坏的形式出现的不稳定通常发生在采场上盘上，可能会大大增加采矿成本。上盘稀释破坏的预测通常依赖于基于应力、开挖几何形状和岩体条件和性质的经验和数值设计方法。这些方法已经取得了一定的成功，但采场爆破、充填、矿石接触不平顺和开启时间的变异性很难量化，只是成功预测采场稳定性的一些挑战。

Open stope mining is one of the most commonly used mining methods in Canada because of the strong rock types of the Canadian shield, high production rates and the high extraction ratios associated with this mining method. Instability in the form of stope dilution or overall failure of stope surfaces commonly occurs on the stope hanging wall and can add significant costs to mining. The prediction of hanging wall dilution and failure commonly relies on empirical and numerical design methods based on stress, opening geometry and the condition and properties of the rock mass. These methods have enjoyed some success, however, variability in stope blasting, backfilling, ore contact irregularity and time open are difficult to quantify and are just some of the challenges for the successful prediction of stope stability.