Creep Model of Rock Subjected to Water Pressure and External Force
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摘要: 为了更好地描述岩石蠕变的全过程以及在水压与外力共同作用下的岩石蠕变规律,对描述岩石蠕变特性的Burgers模型进行了修正.把非线形黏滞阻尼器与塑性元件并联,然后串联在Burgers模型中,从而得到修正的Burgers模型.通过分析和推导,建立了水压与外力共同作用下岩石蠕变全过程的本构方程,并给出了求解模型参数的方法.Abstract: In order to describe the whole process of rock creep and the creep feature of rock subjected to water pressure and external force more exactly,the Burgers model describing the creep feature of rock was modified.A modified Burgers model was set up through paralleling a non-linear adhesion damper and a plastic element,and then connecting in series them and the Burgers model.By analyzing and deducing,a constitutive equation to describe the whole process of rock creep subjected to water pressure and external force was established,and the method to determine parameters in the constitutive equation was given.
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Key words:
- rock creep /
- water pressure /
- Burgers model /
- constitutive equation /
- adhesion coefficient
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