摘要
针对单轴压缩流变试验确定流变模型参数难度大的问题,基于最小二乘法原理及蠕变本构方程,通过室内蠕变试验研究了软岩变形特征与时效特性,分析了试验数据并建立组合Burgers模型,利用数据处理软件对岩石单轴压缩试验结果进行曲线拟合,确定了该流变模型的本构参数。试验结果表明,该方法可行,为研究岩石特性提供了参考。
Aiming at the difficult for determining model parameters with uniaxial comprssion rheological test, weak rock de- formation and timeliness are studied with indoor creep tests based on least square method and creep constitutive equation. Then the test data are analyzed and Burgers model is established. Finally, the data of rock uniaxial compression test is fitted with data processing software and the constitutive parameters of rheologieal model are determined. The results show that the method is fea- sible, which provides reference for study of rock characteristics.
出处
《水电能源科学》
北大核心
2011年第8期42-45,共4页
Water Resources and Power
基金
国家自然科学基金资助项目(41072229)
