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为节省深部巷道支护成本,降低巷道的围岩应力集中,利用有限元数值模拟软件ANSYS/LS-DYNA建立了深部巷道数值模型,考虑高地应力的存在,采用隐式-显示转换方式模拟了不同炮孔深度下巷道围岩的爆破卸压效果。在隐式部分通过静力学分析研究爆破前高地应力巷道围岩变形与应力,然后通过隐式-显式转换把隐式求解器的松弛文件附加到显式模型中模拟爆破作用。分析了不同炮孔深度下巷道变形及应力、位移分布变化规律。
In order to save the cost of deep roadway support and reduce the surrounding rock stress concentration in the roadway, a numerical model of deep roadway was established by using finite element numerical simulation software ANSYS / LS-DYNA. Implicit-display transition mode was adopted to simulate the difference Blasting and Pressure Relief Effect of Roadway Surrounding Rock at Blasthole Depth. In the implicit part, the deformation and stress of the surrounding rock of high ground stress roadway before blasting are studied through statics analysis, and then the implicit solver slack file is attached to the explicit model to simulate the blasting effect through implicit-explicit transformation. The deformation of roadway and the variation of stress and displacement under different blasting depths were analyzed.