中文摘要：

岩石节理表面形貌对于岩石的力学性质具有重要的影响。为了研究节理表面形貌在法向压缩作用下的变化规律,对节理试样进行了压缩闭合试验。运用三维高精度激光形貌仪（Talysurf CLI 2000）对试验前后节理表面分别进行扫描,获得了二维和三维形貌特征图,并选取节理表面最大峰高（S_p）、表面最大高度（S_z）、表面最大谷深（S_v）、峰度系数（S_（ku））、偏斜度系数（S_（sk））、均方根高度（S_q）和算术平均高度（S_a）共7个表面形貌高度特征参数进行分析。研究发现：S_p、S_（sk）、S_k在法向应力的作用下有所减小,但是减幅均较小;S_v在压缩闭合试验后减小明显;S_z变化规律类似;S_a和S_q在压缩闭合后基本呈增大趋势。由此可见,节理表面形貌对节理压缩闭合曲线有明显的影响。

英文摘要：

The surface topography of rock joints has an important influence on the mechanical properties of rock.In order to study the change law of joint surface topography under normal compression,the compression testswere carried out on joints specimens.Joint surfaces were scanned by using 3D high precision laser profilometer（Talysurf CLI2000） before and after the experiments and 2D and 3D morphology characteristics map wereobtained.And surface morphology feature height parameters are selected, including the maximum peak ofthe joint surface high Sv,the maximum height Sz,maximum valley deep Sv,kurtosis coefficient Sk,partial slopecoefficient S ,mean square height Sq, arithmetic mean height Sa.It is found that the Sv, Sk,Sk decrease undernormal stress,but decrease amplitude is small;Sv decreases obviously under the compression closing test;Szvariation law is similar with above;Sa and Sq were increased after testing.The surface morphology of the joints hasa significant effect on the closed curve of the joints.