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-  2016 

基于离散裂隙网络的表征单元体研究 Research on representative elementary volume based on discrete fracture network

Keywords: 离散裂隙网络,表征单元体,裂隙强度,大理岩

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Abstract:

裂隙岩体表征单元体(REV)研究是岩体力学的一个基本问题,是研究岩体尺寸效应的主要方法.阐述了研究裂隙岩体REV的基本思路,基于离散裂隙网络模拟技术的数值分析方法是进行裂隙岩体REV研究的重要手段.建立不同尺寸的岩体模型,分析了裂隙数量、强度、方位等随岩体尺寸的变化特性,从而得出考虑裂隙分布的几何特性上的REV.结合锦屏二级水电站大理岩岩体裂隙的统计规律,采用4组随机裂隙并建立三维离散裂隙网络,最终确定所分析岩体的REV为10m×20m×10m

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