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The study of porosity under constant temperature

Cui Bo,Xu Mengguo,Zhang Tao,Li Aimin,Sun Linjun,Mi Tieliang(Wuhan University of Science and Technology)  
Focusing on the concept of porosity,the paper analyzes the relationship between the change of porosity and distortion of volume,the effective stress expressed by porosity is developed,and the expression is introduced into the Navier's equation and the displacement equation of rock framework is got.Study shows that the inflow and flow-out conforms to a non-linear solid-fluid coupled equation with variable coefficients.
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