用湿度应力场理论分析膨胀岩巷道围岩变形

Large Deformation Analysis of Surrounding Rock of a Tunnel in Swelling Rock Mass Based on the Humidity Stress Field Theory

本文在文献［１，２］提出的膨胀岩体中的湿度应力场理论的基础上，编制了非线性大变形有限元计算程序，并以软岩巷道围岩遇水作用问题为例，用湿度应力场理论分析计算了围岩大变形问题。计算表明，湿度应力场理论克服了以往各种岩石膨胀理论的缺陷，可以综合分析膨胀岩土工程中水、载荷（原岩应力、自重等）、支护等对围岩的共同作用问题。

Based on the humidity stress field theory￣[1,2] a finite element programme for the non-linear large deformation is developed in this paper.The deformation of a tunnel in theswelling rock is calculated by the programme.The results indicate that the theory and programme avoid the defect of other dilation theories and can be used for the large deformationanalysis of surrounding rock acted by water,load and support.