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在岩堆体露天矿开采过程中,岩堆体的破坏特征一直是国内外风险量化分析的巨大挑战。通过物理模型试验研究露天矿开采岩堆体的破坏模式和机理,分析不同类型岩堆体的破坏模式和可能的破坏机理,以及破坏区与岩堆体结构特征的关系。结果表明:降雨对露天矿岩堆体的稳定性和破坏模式有重要影响,降雨首先在岩堆体的某个薄弱区域诱发渗流而产生局部失稳,这种失稳主要是由渗流区域的应力集中而引起的。
During the process of rockfill open pit mining, the destruction characteristics of rockfill body has always been a tremendous challenge for quantitative analysis of domestic and overseas risks. Through the physical model test, the failure mode and mechanism of rock mass in open pit mining are studied. The failure modes and possible failure mechanisms of different types of rock mass are analyzed, and the relationship between the damage area and the structural characteristics of rock mass is analyzed. The results show that rainfall has an important effect on the stability and failure modes of open pit ore piles. Rainfall firstly induces seepage in a weak area of rock mass to cause local instability, which is mainly caused by the stress of seepage area Concentrated and caused.