【摘要】 同时对某水电站引水隧道系统进行了三维粘弹塑性有限元数值模拟和三维弹塑性有限元数值模拟。分析对比了围岩结构的受力、变形演化状况,评价了隧道开挖系统的稳定性。结论表明软岩流变性对隧道稳定性的影响显著。更多还原

【Abstract】 In this paper,a 3-D visco-elasto-plastic FEM and a 3-D elasto-plastic FEM are used to analyze the stability of the excavation structure of one hydropower station diversion tunnel system.The stress and deformation evolvement status of the surrounding rock structure are analyzed and compared on the basis of calculations.The evaluation of tunnels stability has been done.Conclusion shows that the rhelogical characteristics of soft rock is a marked factor to tunnel stability.更多还原