纵向采空区群失稳动态演化过程研究

发布时间：2018-04-10 16:11

本文选题：纵向采空区群 + 动态失稳　；参考：《矿业研究与开发》2017年04期

【摘要】：基于细观损伤力学,运用RFPA岩石破裂过程分析软件,建立纵向采空区群动态失稳的等效数值模型,研究单列和多列纵向采空区群的动态失稳演化过程。结果表明:相比于单列纵向采空区群,多列纵向采空区群的顶板更易发生破坏,岩体结构的抗破坏能力较弱;单列和多列纵向采空区群动态失稳具有不同的演化过程,即单列纵向采空区群按照空区群左右两侧帮壁、顶(底)板到整体的顺序失稳破坏,多列纵向采空区群按照间柱、空区群顶(底)板到左右两侧帮壁的顺序失稳破坏。
[Abstract]:Based on the mesoscopic damage mechanics, the equivalent numerical model of dynamic instability of longitudinally mined-out area group is established by using RFPA software. The dynamic instability evolution process of single and multi-row longitudinally mined-out area groups is studied.The results show that the roof of multi-row longitudinally mined-out area group is more vulnerable to failure than that of single row longitudinally mined-out area group, and the failure resistance of rock mass structure is weak, and the dynamic instability of single-row and multi-row longitudinally mined-out area group has different evolution process.That is, the single row longitudinal goaf group is destroyed according to the sequence of the left and right sides of the empty area group, the top (bottom) plate to the whole, and the multi-row longitudinal goaf group according to the column, the top (bottom) plate of the empty area group to the left and right sides of the side wall.
【作者单位】：华南理工大学土木与交通学院;华南理工大学安全科学与工程研究所;
【基金】：国家重点研发计划项目(2016YFC0600802) 国家自然科学基金资助项目(51174093,51574013,51374035)
【分类号】：TD325.3

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