摘要
根据深部围岩的三高特性:高应力、高温度和高渗流,建立了温度-渗流-应力三场耦合的控制方程,采用有限元法进行了求解。考虑了围岩的蠕变及破坏之后的应力迁移,并推导了有限元增量表达式。考虑温度和渗流的影响,给出了围岩不稳定体加固设计方法。将提出的计算方法应用于工程实例进行了分析,结果表明本文提出的方法是可行的。
According to the deep surrounding rock of the three high characteristics：high seepage,high stress and high temperature,the control equation of is established for three coupled field of seepage,temperature and stress,the finite element method is used for solving.Considering the creep of surrounding rock and the stress of migration after failure,the finite element incremental expressions are derived.Considering the influence of temperature and seepage,the instability of surrounding rock body reinforcement design method is presented.The proposed calculation method is applied to the engineering example and analyzed.The results show that the proposed method is feasible.
出处
《中国建材科技》
2014年第5期111-114,共4页
China Building Materials Science & Technology
关键词
围岩
多场耦合
加固设计
有限元法
surrounding rock
several coupling
reinforcement design
finite element method
