复杂空区群回采围岩破坏模式及区域并行研究
发布时间：2018-09-09 12:58
【摘要】：为研究红岭铅锌矿大规模回采过程中围岩顶板的破坏模式及区域,分析承压矿柱以及围岩的应力演化规律,明确空区群的力学状态以及稳定性。建立大尺度复杂空区群三维力学计算模型,应用大规模并行计算技术,对中段回采中围岩矿柱破坏模式及应力演化规律进行了研究。结果表明:顶板在不同矿体厚度区域,会产生""型剪切破坏、发散型破坏、X状共轭剪切破坏以及单斜面剪切破坏等不同破坏形式;回采后产生9个主要承压矿柱、4个次要承压矿柱;中段回采,会对上一中段产生明显应力扰动,原有破坏扩展,并产生新的破坏,但隔段回采,不会对最上中段产生应力影响。
[Abstract]:In order to study the failure mode and region of roof of surrounding rock during large-scale mining of Hongling lead-zinc mine, the stress evolution law of bearing pillar and surrounding rock is analyzed, and the mechanical state and stability of hollow area group are determined. A three-dimensional mechanical calculation model of large scale complex hollow zone group is established. The failure mode and stress evolution of surrounding rock pillar in the middle section of mining are studied by using large-scale parallel computing technology. The results show that different failure forms such as "type" shear failure, divergent type failure, X-shaped conjugate shear failure and single inclined plane shear failure will occur in different orebody thickness regions. After mining, 9 main bearing pillars and 4 secondary bearing pillars will be produced, and the middle section will produce obvious stress disturbance, original damage spread and new damage, but the interval recovery will not produce stress effect on the upper middle section.
【作者单位】： 东北大学深部金属矿山安全开采教育部重点实验室;东北大学资源与土木工程学院;北京矿冶研究总院矿山工程研究所;
【基金】：国家自然科学基金项目(51574060,51404067,51574059)
【分类号】：TD325.3
本文编号：2232440
[Abstract]:In order to study the failure mode and region of roof of surrounding rock during large-scale mining of Hongling lead-zinc mine, the stress evolution law of bearing pillar and surrounding rock is analyzed, and the mechanical state and stability of hollow area group are determined. A three-dimensional mechanical calculation model of large scale complex hollow zone group is established. The failure mode and stress evolution of surrounding rock pillar in the middle section of mining are studied by using large-scale parallel computing technology. The results show that different failure forms such as "type" shear failure, divergent type failure, X-shaped conjugate shear failure and single inclined plane shear failure will occur in different orebody thickness regions. After mining, 9 main bearing pillars and 4 secondary bearing pillars will be produced, and the middle section will produce obvious stress disturbance, original damage spread and new damage, but the interval recovery will not produce stress effect on the upper middle section.
【作者单位】： 东北大学深部金属矿山安全开采教育部重点实验室;东北大学资源与土木工程学院;北京矿冶研究总院矿山工程研究所;
【基金】：国家自然科学基金项目(51574060,51404067,51574059)
【分类号】：TD325.3
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