基于Hurst指数的独立分割方法,结合MATLAB软件中差值函数和随机数产生函数,生成了10条典型的岩体结构面曲线;根据Tse和Barton提出的经验公式和10条典型结构面曲线的数据点,计算出10条曲线的粗糙度JRC值.运用线段尺码法测量已产生的10条结构面曲线中5条曲线的分形维数值Df(D).对粗糙度JRC值和分形维数值D进行曲线拟合,拟合结果表明:拟合曲线能较好地反映JRC和D之间的关系. Based on the Hurst index independent segmentation method, combined with the difference function in MATLAB software and random number generation function, 10 typical rock mass structure surface curves were generated. According to the empirical formula proposed by Tse and Barton and the data of 10 typical structure surface curves Points to calculate the roughness of the 10 curves of the JRC value.Using line segment size method to measure the ten curves have been generated in the five curves of the fractal dimension value Df (D). The roughness of the JRC value and the fractal dimension value D Curve fitting, fitting results show that: fitting curve can better reflect the relationship between JRC and D.