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。
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 turmel 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 rhelogieal characteristics of soft rock is a marked factor to tunnel stability.
出处
《地下空间与工程学报》
CSCD
2005年第5期717-720,724,共5页
Chinese Journal of Underground Space and Engineering
关键词
流变性
粘弹塑性
有限元
隧道稳定性
rheloglcal behavior
viseo- elasto- plastic behavior
finite element method
tunnel stability
