Numerical simulation of percolation law of 3D porous and fractured double-medium |
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| Authors: | Lü Zhao-xing FENG Zeng-chao ZHAO Yang-sheng TAN Li-ping |
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| Institution: | 1. Institute of Mining Technology, Taiyuan University of Technology, Taiyuan 030024, China; 2. School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China |
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| Abstract: | Based on the model of 3D porous medium, the fracture as a very important permeability channel is taken into account in the theoretical research on percolation of medium, the research methods of percolation in 3D porous and fractured double-medium is put forward, and the percolation model of 3D porous and fractured double-medium are established. The model applies to more fields, such as coal bed, rock mass. Based on VC++6.0, the software of 3D is developed, the percolation and the percolation law of 3D porous and fractured double-medium are simulated. The results indicate that fracture in the model increases the value of percolation probability observably. It makes the percolation law of double-medium differ from the law of porous medium. The natural phenomena of percolation transition happens surely with the increase in porosity, fracture fractal dimension and fracture number distribution initial value. |
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| Keywords: | percolation pore fracture fractal percolation threshold double-medium |
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