FRACTAL CHARACTERISTICS OF ROCK DISCONTINUITIES

被引：33

作者：

GHOSH, A

DAEMEN, JJK

机构：

[1] Center for Nuclear Waste Regulatory Analyses Southwest Research Institute, San Antonio

[2] Mining Engineering Department, Mackay School, Mines University of Nevada, Reno

来源：

ENGINEERING GEOLOGY | 1993年 / 34卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Copper mines - Deformation - Excavation - Flow of fluids - Fractals - Fracture - Geometry - Mathematical models - Parameter estimation;

D O I：

10.1016/0013-7952(93)90039-F

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The discontinuities in a rock mass usually control its overall behavior. Rock mass deformability, stability of underground excavations, and flow of fluid depend significantly on the intensity, the degree of interconnection, and the characteristics of the fracture network present. We apply the theory of fractal geometry to describe the rock fracture network. Three parameters characterize the discontinuities visible in the exposed face of the investigated rock mass. The first parameter measures the complexity of the network formed by the individual traces of the discontinuities. The intensity and the interconnectivity of the discontinuities are characterized by the fracture density and the block density respectively. We use data from four faces of a copper mine in Arizona. All three parameters show fractal characteristics over the range investigated with coefficients of determination better than 0.99. The fractal structure of these parameters suggests that the rock fracturing process may be a scale-independent phenomenon.

引用

页码：1 / 9

页数：9

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