摘要
岩土体由于各种结构面切割而形成不同的岩土体结构类型,岩块和土块还具有复杂的组构。不同结构和组构类型的岩土体在工程力的作用下有不同的强度、变形和破坏机理,因此结构和组构的划分及识别是岩土体稳定性分析的关键。目前,国内外对岩土体结构的划分还停留在间接指标和定性的凭经验阶段,这是因为岩土体是一种复杂的分形几何体,传统的几何方法很难从本质上描述其综合的几何特征。而利用分维的概念,可以研究岩土体结构及组构要素的复杂几何特征,求得其分形几何特征的参数,为岩土体结构类型的划分提供定量指标。
Rock and soil masses cut by various discontinuities have differrent structure type. Rock and soil have complex fabric. Different structure and fabric types have different strenth, deformation and failure mechanism by the action of engineering forces. Therefore, the classification and identification of structure and fabric types is the key of the analysis of the engineering stability. However, at present, the classfied methods of struture and fabric of rock-soil mass are only stopped in the indirect index and experienced stage because of the rock-soil mass being a complex fractal object and being difficult to intrinsically descripe its the general geometric character by using the traditional geometry.By using concept of fractal dimension, the studing the complex geometric character of the essential elements of structure and fabric of rock-soil mass can be made to find the parameters of its fractai character and provide objective Parameters for the classification of rock-soil mass structure and fabric.
关键词
工程地质
结构
定量分析
分形几何
Engnieering geology
structure
qualitative analysis/fractal geometry
fractal dimension
