中文摘要：

对6组天然岩石节理试件在法向应力为3MPa时进行剪切试验，利用高精度三维表面形貌测试仪Talysurf CLI2000对剪切前后节理试件表面进行扫描。运用自相关长度、纹理纵横比及纹理方向角这3个纹理特征参数对剪切试验前后岩石节理表面形貌特征的变化进行分析。研究结果表明：在剪切过程中，不同节理试件表现出不同的剪切破坏方式，节理表面形貌变化不同；在剪切后，自相关长度发生增大、减小和不变3种变化，纹理纵横比也发生增大和减小，表明节理表面形貌发生了不同程度的变化；纹理方向角发生改变，表明节理表面形貌起伏方向和纹理延伸方向发生了变化。

英文摘要：

Six sets of rock joint specimen were made for shear tests in the case of the normal stress for 3 MPa. Then, the joints topographies before and after shearing were scanned by the high-precision 3D surface morphology tester Talysurf CLI 2000. The changes of the rock joint surface morphology before and after sheafing were analyzed with three joint surface texture characteristic parameters of the autocorrelation length, texture aspect ratio and texture angle. The results show that different joint specimens have different shear failure mode during the sheafing process, and the changes of joint surface morphology are different. After shearing, autocorrelation length shows three different variations increase, decrease and remain unchanged. And texture aspect ratio also shows variations of increase and decrease, which indicates the surface topography of rock joint changes in varying degrees. The changes of texture angle indicate that the rolling direction and the texture extension direction of rock joint surface topography change.