摘要
地下岔洞施工过程中的围岩稳定分析的研究一直是工程界研究的热点。结合工程实例,对高水头地下岔洞岩体围岩施工开挖期的稳定性分析进行了深入的研究。研究中采用适用于岩石受荷的屈服准则及其关联流动法则的弹塑性材料本构模型,对地下岩体岔洞围岩的稳定性进行有限元数值分析,得出岔洞围岩关键部位位移、应力及塑性区的分布状态。
The study on stability analysis of surrounding rocks during construction of underground bifurcation tunnel has always been a hot topic in engineering circle.In combination with engineering examples,the stability analysis of surrounding rocks during construction and excavation of underground high water head bifurcation tunnel is carried out in depth.In this study,an elastic-plastic material constitutive model applicable to the yield criterion under rock load and the associated flow rule is used to carry out finite element numerical analysis on the stability of surrounding rocks of underground rock mass with a bifurcation,and the distributions of displacements,stresses and plastic zones in key parts of surrounding rocks of the bifurcation are obtained.
作者
王俊
杨海红
王铭明
WANG Jun;YANG Hai-hong;WANG Ming-ming(Power China Kunming Engineering Corporation Limited,Kunming 650041,China;Electric Power Engineering College,Kunming University of Science and Technology,Kunming 650500,China)
出处
《云南水力发电》
2021年第7期97-100,共4页
Yunnan Water Power
基金
国家自然科学基金项目(51669008,51969010,51779032)
“十三五”重点研发计划项目(2017YFC0404903,2017YFC0404900)。
关键词
地下岔洞
围岩稳定分析
弹塑性本构模型
D-P本构模型
underground bifurcation tunnel
surrounding rock stability analysis
elastic-plastic constitutive model
D-P constitutive model
