Hoek-Brown强度准则的断裂力学理论研究
Chinese Jounal of Geotechnical Engineering（2004）
Abstract
采用Griffith关于岩石内部微裂纹分布的假定,用一个角量φ来表征三轴压力下岩石内微破裂密度,依据线弹性断裂力学中复合裂纹问题的有关准则,导出了φ与外载的关系,进而以岩石受压过程中的细观现象为基础,选取|(e)cosφ/(e)∑1|(即cosφ对轴向应力的变化率)作为岩石在三轴压力下的破坏特征量,从理论上导出了与Hoek-Brown经验强度准则完全一致的强度公式.
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Key words
hoek,strength,theoretical research
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