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| METHOD OF RANDOM CONFIGURATION GENERATION FOR POLYBASIC MIXED MEDIUM AND ITS APPLICATION |
| WANG Haili1，2，SHI Chong1，2，WANG Shengnian1，2，ZHANG Yulong1，2，CHEN Kaihua1，2 |
| (1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering，Hohai University，Nanjing，Jiangsu 210098，China；2. Research Institute of Geotechnical Engineering，Hohai University，Nanjing，Jiangsu 210098，China) |
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Abstract Soil-rock polybasic mixed medium is a kind of non-uniform and discontinuous body whose internal structure is complex. The mechanical characteristics and failure mechanism of this mixture are determined by the non-uniformity of its mesostructure to a great extent. From its mesostructural characteristics，a random configuration generation system of polybasic medium based on arbitrary concave and convex polygonal and circular rock blocks (M-MRMS2D) has been developed by using Visual C++ programming language with interdisciplinary techniques involving statistics，geometry，computer and so on. Polybasic mixed medium numerical model is generated by the M-MRMS2D on the basis of block shape，smoothness，block material，medium content，and spatial distribution. With this system，the composition of accumulation body of the landslide for Zhenggang in Gushui hydroelectric station is built，and the stress-strain curve of numerical experiments，deformation and failure characteristics and macro-mechanical characters of polybasic mixed medium are analyzed. The method is important to understand mechanical properties of soil-rock polybasic mixed medium.
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Received: 20 May 2013
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2014, Vol. 33 
