Realistic 3D Pore Network Model of Slurry Masonry and Numerical Simulation of Seepage Based on CT Technology
To investigate the seepage law of slurry masonry,a typical core sample of a masonry arch dam that has been running for more than 30 years in Guangdong Province was selected as the research object.Based on computer tomo-graphy(CT)technology,a real three-dimensional pore network model of masonry was built,and the seepage characteris-tics of masonry under different pore structures and water pressure differences were simulated.The results show that the seepage path of high flow velocity is concentrated along the location of the large pore gap,the streamline is more straight and smooth,and the seepage path in the small pores around is more dispersed;The flow velocity and flow rate in the large pores are larger,and the large flow velocity will erode the masonry structure,thus promoting the transformation of connecting pores into micro cracks,and the transformation of small pores into large pores;With the increase of water head difference,the maximum flow velocity and maximum flow rate of masonry gradually increase,and the more devel-oped the pore structure,the greater the increased.
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维普
