圆形隧道围岩蠕变柔量的确定及粘弹性力学模型的识别

DETERMINATION OF THE CREEP COMPLIANCE OF SURROUNDING ROCK OF A CIRCULAR TUNNEL AND THE IDENTIFICATION OF ITS MECHANICAL MODEL

本文给出了圆形隧道围岩径向位移与岩体蠕变柔量的线性关系,并用位移分析法确定了岩体的蠕变柔量,根据所得到的蠕变柔量值由解析法识别了岩体的力学模型并反演了其力学参数。

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.