Surrounding rock pressure, water pressure, and joint roughness are the important factors that affect the fractured rock mass seepage. It is of great significance to quantify the influence of these factors through experiments. In this study, rock fracture joint surfaces were measured. Next, 3D coordinates of joint surfaces were extracted with using the Geomagic software, and joint roughness was described using the mean variance of protrusion height and equidistant fluctuation angle, which were acquired through calculation. Stress-seepage coupling test was then conducted on the samples on a triaxial apparatus, and the effects of confining stress and water pressure on the permeability of single-fracture rock were investigated. On the basis of the relationship between the parameters in data fitting expression and the mean variance of protrusion height and equidistant fluctuation angle, the calculation formula of the permeability coefficient including joint roughness, confining pressure, and seepage pressure difference was derived.

中文翻译：

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节理粗糙度对裂隙岩体渗流影响的试验研究

围岩压力，水压和节理粗糙度是影响裂隙岩体渗流的重要因素。通过实验量化这些因素的影响具有重要意义。在这项研究中，测量了岩石断裂缝的表面。接下来，使用Geomagic软件提取关节表面的3D坐标，并使用通过计算获得的突起高度和等距波动角的平均方差描述关节粗糙度。然后在三轴仪上对样品进行了应力-渗流耦合试验，研究了围压和水压对单裂隙岩石渗透率的影响。