以某锰矿一期开采-170~-250 m中段矿体厚度小于1.8 m的矿段为工程背景,研究以倾斜分条房柱采矿法回采矿体时采场的地压分布及采场稳定性问题.运用Flac3D数值分析软件,模拟矿体的开采过程,并分析矿体开采后采场的应力分布及塑性区分布.最后结合实际情况,提出相应的地压控制措施.
The paper takes an ore section with the orebody thickness less than 1 . 8 m in the level from -170 m to-250 m in a manganese mine's first-phase mining as the engineering background,and studies the pressure distribution and stability of stopes when the orebodies are extracted by the inclined stripes room and pillar mining method. The ex-cavation process of the ore body and the distribution of stress and plastic zones are simulated by the numerical analysis software Flac3D . The control measures of ground pressure are put forward according to actual situations.
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