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运用分形几何的方法研究了一个露天矿边坡上裂隙的发育情况 ,发现不同结构类型的岩体中裂隙分布均具有统计意义上的分形特征 .分形研究采用了 3个参数 :裂隙网络分维 Dn、裂隙密度分维 Df 和块体密度分维 Db,分别表征岩体中裂隙网络的复杂程度、裂隙发育的密集程度及裂隙之间的连通程度 .3个参数的大小变化反映了岩体中裂隙发育的实际情况 ,可以作为岩体结构类型划分和工程岩体质量评价的定量依据 .裂隙网络分维 Dn 越大 ,裂隙密度分维 Df 和块体密度分维Db越小 ,岩体结构越差 .裂隙网络分维 Dn 与块体密度分维 Db之间存在较好的负相关关系 .
Fractal geometry is used to study the development of fractures on the slope of an open pit mine. It is found that the distribution of fractures in rock masses with different types of structures has statistical fractal characteristics. Fractal study uses three parameters: fracture network fractal dimension Dn , Fractal dimension Df and fractal dimension Db, characterizing the complexity of the fracture network in the rock mass, the intensity of the fracture development and the degree of connectivity between the fractures, respectively.The changes of the three parameters reflect the fracture in the rock mass The actual situation can be used as a quantitative basis for the classification of rock mass structure and the evaluation of engineering rock mass quality.The larger the fractal dimension Dn of the fractured network, the smaller fractal dimension Df and the smaller fractal dimension Db, the poorer the rock mass structure There is a good negative correlation between fractal dimension Dn and block fractal dimension Db.