岩体节理表面形貌的各向异性研究  

ON ANISOTROPY OF SURFACE TOPOGRAPHY OF ROCK JOINT

作　　者：周宏伟[1] 谢和平[1] M A Kwasniewski 杨长义[3] 

机构地区：[1]中国矿业大学北京校区岩石力学与分形研究所,北京100083 [2]波兰西里西亚工业大学 [3]台湾淡江大学

出　　处：《地质力学学报》2001年第2期123-129,共7页Journal of Geomechanics

基　　金：国家自然科学基金!(编号 :5 0 0 740 32 );波中国际合作项目!(编号 :2 6 3 0 4)

摘　　要：本文根据激光表面仪测量的节理表面形貌数据 ,通过将高度分布转化为斜率分布、并对斜率分布采用频谱分析的方法 ,研究了节理表面形貌的各向异性特征。一般的统计参数只能给出节理表面剖线某种性质的平均测度 ,很难捕捉节理表面的各向异性性质。而功率谱密度全面反映了节理表面形貌中大尺度上的起伏和小尺度上的涨落 ,具有一般统计参数不可比拟的优越性 ,通过定义累计功率谱密度指数psd 的方法 ,定量地表征了岩体节理表面的各向异性。Based on date of surface topography of rock joint measured by laser profilometer, by transferring the height distribution into the slope distribution and taking spectral analysis of slope distribution, the anisotropic behavior of surface topography of rock joint is discussed in this paper. The general statistical parameters can supply the average measurement of certain behavior of individual profiles, but can not catch the behavior of anisotropy. However, the power spectral density can characterize both the shape of a profile at the large scale and the fluctuation at the small scale, therefore it is superior to the general statistical parameters. In this paper, a parameter called index for the accumulated power spectral density is defined to characterize quantitatively the anisotropy of surface topography of rock joint.

关 键 词：岩体节理 表面形貌 各向异性 频谱分析 累计功率谱密度指数 

分 类 号：TU452[建筑科学—岩土工程]