DETERMINATION OF THE CREEP COMPLIANCE OF SURROUNDING ROCK OF A CIRCULAR TUNNEL AND THE IDENTIFICATION OF ITS MECHANICAL MODEL
圆形隧道围岩蠕变柔量的确定及粘弹性力学模型的识别

This paper gives a linear relationship between the radial displacement of the surrounding rock of a circular tunnel and the creep compliance of the rock mass. Based upon such a linear relationship, a method for hack analysing the mechanical parameters of various viscoelastic models assumed for the surrounding rock from measured radial displacement values is proposed and relevant analytical formulas are derived. And also a method for identifying the exact viscoelastic model suitable for the rock mass under consideration is put forward.