洞室围岩收敛变形灰色理论预测

Prediction of Grey Theory on Convergent Deformation of Surrounding Rock of Cavern

洞室开挖后，洞周围岩的应力状态将会发生应力重分布。这是一个复杂的物理力学过程，其直观表现是洞室围岩发生位移．在以新奥法为代表的现代隧洞工程中，常常以收敛变形量测值作为判断围岩稳定状态和支护结构的经济合理性指标之一般地讲，围岩收敛变形是随时间而变化的。因此，收敛量测得到一个与时间顺序有关的数据列。我们曾根据围岩变形随时间变化的特点，利用岩石流变理论进行了研究＿［１］。本文简略地介绍了采用灰色理论的原理和方法，分析和研究围岩收敛变形的特点。

After excavation of cavern,stress in surrunding rock of cavern will redistributed.It is a complexphysical and mechanical process which apparently show the displacement of surrunding rock Of cavern. Inmodern tunnel project,represented by New Austrian Method,measured convergent deformation is one Indiceto assess stability of surrounding rock and economy of supports.In general,because convergent deformation ischanged with time,a data column which is related with time sequences will be gained in mesurement of con-vergency.Based on this feature,the study is carried out in the light of rock rheologic theory. Analysis andstudy on feature of convergent deformation of surrounding rock by principle and method of grey theory arebriefly introduced.