摘要
在常年恒温、恒湿的实验室中,在不同围压以及不同应力比条件下,对3种沉积软岩系统地进行了长期三轴蠕变压缩实验研究。对所获得的大量实验结果进行研讨后,运用粘弹性流变模型求得非破坏时各种软岩的蠕变系数,同时,用柔量可变模型模拟破坏时的蠕变行为。系统地把握了多种软岩在不同条件下的强度、变形特性,探讨了各种软岩的变形、变形速率、时间依存性等影响因素,为预测软弱岩体的长期力学稳定性提供了重要依据。
In the laboratory of constant temperature-humidity, triaxial compression creep experiments were conducted under different stress states on three kinds of sedimentary soft rock. A lot of experiment results are examined and analyzed by five-element rheologic model and constitutive equation of variable compliance type. The relationship among many factors are obtained on the creep behaviour of sedimentary soft rock, such as axial strain, axial strain ratio, axial stress, and axial stress ratio.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2003年第6期905-912,共8页
Chinese Journal of Rock Mechanics and Engineering
关键词
沉积软岩
三轴蠕变实验
粘弹性
变形
数学模型
评价
rock mechanics, soft rock, creep, axial strain, model, time dependent behavior
