多元混合介质骨料的随机构形生成方法及应用

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摘要土石多元混合介质是一种内部结构复杂、规律性差，非均匀、不连续的混合体，其力学特性与破坏机制受复杂多变的细观结构影响较大。从多元混合介质的细观结构特征分析出发，结合统计学、几何学、计算机学等技术，利用Visual C++程序语言开发任意凹凸多边形及圆形块体的多元混合介质细观随机构形生成系统M-MRMS2D。利用该系统，根据块体形状、光滑度、骨料种类、骨料含量等逐级配随机生成混合介质数值模型，将其运用于云南省古水水电站争岗滑坡堆积体的物质组成分析，利用数值试验分析多元混合介质的应力–应变曲线、变形破坏特征及宏观力学性质等，对深入了解土石多元介质的力学性质有借鉴意义。

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关键词 ：岩石力学, 多元混合介质, 随机构形, 块体级配, 数值试验

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.

Key words： rock mechanics polybasic mixed medium random configuration block composition numerical experiments

收稿日期: 2013-05-20

引用本文:

王海礼1，2，石崇1，2，王盛年1，2，张玉龙1，2，陈凯华1，2. 多元混合介质骨料的随机构形生成方法及应用[J]. 岩石力学与工程学报, 2014, 33(sl): 2827-2834.
WANG Haili1，2，SHI Chong1，2，WANG Shengnian1，2，ZHANG Yulong1，2，CHEN Kaihua1，2. METHOD OF RANDOM CONFIGURATION GENERATION FOR POLYBASIC MIXED MEDIUM AND ITS APPLICATION. , 2014, 33(sl): 2827-2834.

链接本文:

http://www.rockmech.org/CN/Y2014/V33/Isl/2827

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