铁道科学与工程学报2012，Vol.9Issue(2)：99-104,6.
经历剪切变形历史的岩石节理表面形貌变化
Evolution analysis of surface topography of rock joints under different shear deformation histories
摘要
Abstract
Four diverse characters of artificial rock joints were made by Brazilian tests, shear tests of rock joints under different normal stresses which were conducted with RYL - 600 rock shear - rheological instrument. Moreover, the surface of each joint was scanned prior to and after each shear test by the scanner instrument TALY-SURF CLI 2000. A series of 3D parameters were obtained, and the meso - level topography evolution of rock joint surfaces are quantitatively analyzed through the value alterations of the 3D parameters. The results indicate that the alteration of shear strength is obviously related with the alteration of joint surface topography. After four shear tests, the whole height of joints decreases slightly, so does the altitude differences of points, the density of peaks, the unevenness of joint surfaces, the anisotropy degree of joint surfaces, and the incline of joint surfaces; with regard to the same alteration of joint, the angle and extent that different parameters reflect are different. The topography evolution of joint surface decreases with the alteration of normal stresses, while the surface topography tends to be steady gradually.关键词
岩石节理/剪切试验/三维形貌参数/细观形貌/变化Key words
rock joints/ shear test/ 3D topography parameter/ meso -level topography/ alteration分类
建筑与水利引用本文复制引用
曹平,梅慧浩,宁果果,范祥,刘新颖..经历剪切变形历史的岩石节理表面形貌变化[J].铁道科学与工程学报,2012,9(2):99-104,6.基金项目
国家自然科学基金资助项目(51174228) （51174228）
中南大学研究生学位论文创新资助项目(2011 ssxt271) （2011 ssxt271）
中南大学米塔尔学生创新项目(11MX22) （11MX22）
