摘要
根据岩石流变力学特性,提出了一个能描述岩石加速流变阶段的黏塑性流变模型。然后,将这个岩石黏塑性流变模型与5元件黏弹性剪切流变模型串联起来,构成了一种新的岩石黏弹塑性流变模型。利用花岗岩剪切流变试验曲线对该岩石黏弹塑性流变模型进行辨识,获得了模型的流变参数。将岩石黏弹塑性流变模型拟合结果与剪切流变试验结果进行比较,结果表明岩石黏弹塑性流变模型能够较好地描述岩石的加速流变特性。
According to the rheological mechanical properties of rock,a visco-plastic model which depicts the creep acceleration stage of rock is proposed. This model is connected with five-component visco-elastic shear rheological model in series,thus establishing a new visco-elasto-plastic rheological model of rock. The shear rheological curves of granite is used to identify the visco-elasto-plastic rheological model,and the rheological parameters of the model are obtained. Comparison between the model fitted result and the shear rheology test result shows that the accelerating rheological properties of rock can be described effectively by this visco-elasto-plastic rheological model.
出处
《长江科学院院报》
CSCD
北大核心
2014年第7期44-48,共5页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金面上项目(41172281)
国家重点基础研究发展规划(973)项目(2011CB710604)
关键词
岩石力学
加速流变阶段
非线性
串联
黏弹塑性流变模型
rock mechanics
creep acceleration stage
nonlinear
in series
visco-elasto-plastic rheological model
