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利用FLAC程序,对鞍山矿业公司眼前山铁矿采场南帮设计和调整开采方案分别进行了模拟研究。以模拟结果的破坏区域和破坏程度来评价边坡的稳定性,从而评价两种开采方案可能形成的破坏情况。计算结果表明原有设计方案深部开采会导致局部破坏,调整方案有效地改善了深部边坡状况。同时,建立一个统计损伤参量来评价岩石在工程卸荷的应力路径下的损伤劣化及空间分布。
The FLAC program was used to simulate the design and adjustment of the south block of Anshan Mining Company’s Yanqianshan Iron Mine. The stability of the slope was evaluated by simulating the extent of the damage and the degree of damage to evaluate the possible damage caused by the two mining options. The calculation results show that the deep excavation of the original design scheme will lead to partial damage, and the adjustment scheme effectively improves the condition of the deep slope. At the same time, a statistical damage parameter is established to evaluate the damage and spatial distribution of the rock under the unloading stress path.