A method for assembling a rock rheological element

Abstract

The invention discloses a method for assembling a rock rheological element, which comprises the following steps: acquiring the rock rheological strain-time curve under uniaxial compression under multi-stage stress loading conditions; using a gene genetic expression algorithm to realize the series and parallel connection of the rock rheological element , deduce the rheological constitutive equation assembled by the rheological elements; determine the determination coefficient of the rheological constitutive equation by fitting; determine the rock rheological constitutive model that best reflects the experimental data through iterative calculation. The invention can overcome the human subjectivity in the assembling process of the traditional rheological constitutive model, realize the automatic assembly of the rheological element, and can obtain the rock rheological constitutive model which can best reflect the experimental data.

Description

technical field [0001] The invention relates to an assembly method of a rock rheological element. Background technique [0002] The rheological behavior of rock is an important mechanical behavior of rock, which has a great influence on the long-term stability of geotechnical engineering. To quantitatively describe the rheological behavior of rocks, various rheological elements (elastic elements, viscous elements and plastic elements) are generally used to assemble each other to establish a rheological constitutive model of rocks. According to the strain-time curve obtained from laboratory experiments, its change trend, and then determine the assembly form of the rheological element. Therefore, there is a large human subjectivity in the assembly process of the rheological element. The acquisition of the rheological constitutive model largely depends on the subjectivity of the experimenter. The rheological The assembly process of components is also not objective enough. Co...

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Problems solved by technology

To quantitatively describe the rheological behavior of rocks, various rheological elements (elastic elements, viscous elements and plastic elements) are generally used to assemble each other to establish a rheological constitutive model of rocks. According to the strain-time curve obtained from laboratory experiments, its change trend, and then determine the assembly form of the rheological element. Therefore, there is a large human subjectivity in the assembly process of the rheological element. The acquisition of the rheological constitutive model largely depends on the subjectivity of the experimenter. The rheological The assembly process of components is not objective enough

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