通过裂隙辐射流渗流试验装置对人工裂隙进行不同法向荷载下渗流试验,分析法向应力和渗流压力对渗流量的影响机理。各级法向荷载下裂隙面冲刷痕迹大体接近,被冲刷的区域集中在试件中心进水口处,进水口附近水流产生较大紊动。不同法向应力下渗流量与入渗水头近似呈线性关系,说明了试验过程中裂隙水的运动特性符合达西定律;相同入渗水压下的渗流量大致相同,上下试件之间的接触状态不随法向应力的加大发生变化,而是维持一个稳定的裂隙开度。入渗水压从0.1 MPa到0.2 MPa之间水头损失增加较快,0.2 MPa后增速变慢且趋近直线;水头损失百分比曲线呈现先增大后减小的规律,拟合曲线为三次多项式。 The seepage test of artificial fractures under different normal loads is carried out by means of fractured radial flow seepage test device, and the influence mechanism of normal stress and seepage pressure on seepage volume is analyzed. At all levels of normal load, the scouring marks on the fracture surface are generally close to each other. The scoured area is concentrated at the inlet of the specimen center and the water flow near the inlet has a large turbulence. The results show that there is a linear relationship between the seepage flow and infiltration head under different normal stresses, which shows that the movement characteristics of fissure water are in accordance with Darcy’s law. The seepage flow under the same infiltration pressure is approximately the same. The contact between the upper and lower specimens The state does not change with the normal stress increases, but to maintain a stable fracture opening. The water head loss increased rapidly from 0.1 MPa to 0.2 MPa for infiltration pressure and slowed down and approached a straight line after 0.2 MPa. The curve of head loss percentage first increased and then decreased, and the fitted curve was cubic polynomial .