宽厚煤柱的稳定性研究

Study on stability of wide and thick coal pillar

文章从理论上推导出了三维应力状态下估算煤柱塑性区宽度的理论公式。从系统论的角度提出改善煤柱稳定性的新思路,即从提高稳定性最差的煤柱来改善整个煤柱系统的稳定性,并从材料和结构两个方面给出评价煤柱稳定性的指标。通过正交设计,利用FLAC软件模拟,给出煤柱稳定性最优的方案。

The range of the plastic zone of wide and thick pillar in triaxial stress is studied in theory. From the point view of system theory, a new concept for improving the stability of the whole pillar system is put forward, and the indices of pillar stability assessment are introduced. By using the orthogonal design method, simulating with program FLAC, the optimized layout of coal pillar is given.