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Mathematical model for coupled seepage and stress fields in rock mass of fracture network by considering hydrodynamic pressure

CHAI Jun-rui 1,3 ,WU Yan-qing 2,3(1.College of Hydroelectric Engineering,Sichuan University,Chengdu610065,China;2.Cold and Arid Regions Environmental and Engineering Institute,CAS,Lanzhou730000,China;3.College of Hydroelectric Engineering,Xi  
The action forces applied on rock mass of fracture network by seepage include two parts:hydrostatic seepage pressure and hydrodynamic seepage pressure(tangent hauling force applied on fissure walls).The whole interaction between seepage and stress was introduced in this paper.With the hydrostatic seepage pressure and tangent hauling force being simultaneously considered,the mathematical model for coupled seepage and stress fields in rock mass of fracture network was established with the linkage of the(equivalent )aperture and the strain of rock mass.An engineering example is computed by FEM to show the applicability of the model for coupled seepage and stress fields.
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