深部采区胶结充填体稳定性分析

Stability Analysis on the Cemented Filling Body in Deep Mining Area

通过充填体的变形现象对安庆铜矿深部采场充填体进行了X型剪切破坏、鼓帮-裂皮-折断型破坏的宏观力学分析,运用测斜仪进行了不同深度监测,采用摩尔准则建立了充填体整体稳定分析模型,得出了充填体局部帮壁的垮落规律,不同高度暴露的充填体的稳定应满足其最小的正应力值的条件,为制定充填体强度方案提供了重要的指导作用。

Macromechanics analysis of X-type shearing failure, shearing-failure, drumming slope- split leather-fracture damage were done on stability of backfill of deep stope of copper mine in Anqing city through deformation phenomenon of backfill, different depth monitoring was done by using inclinometer, analysis model of overall stability of backfill was established by adopted Mohr Criterion, collapse laws of X type shearing, shear type, drumming slope-split leather-fracture occurred at partial slope wall of back- fill were obtained. Analysis results indicate that different height of the filling body stability exposure need to meet the condition of minimum normal stress value, while it has important guiding significance for backfill strength plan making.