高水力梯度和大雷诺数情况下交叉裂隙中水力特性的试验研究

Experimental Study on Behaviors of Fluid Flow in the Intersecting Fractures at a High Hydraulic Gradient and a High Reynolds Number

设计制作一系列 “一进两出” 交叉裂隙试样, 通过自主设计的高精度渗流测试系统中完成试验, 发现在高水力梯度和大雷诺数条件下, 交叉角处形状会对裂隙中水力特性产生严重影响.发现 “夹角模式” 会影响两条出水裂隙流量分配比 （ε）, 并给出了影响分布域.

Fluid flow tests were conducted on a series of one-inlet-two-outlet specimens with fracture intersections using experimental system for the fluid flow test. It was demonstrated that the intersection shapes can enhance the strong nonlinearity of the fluid flow at a high Reynolds number and a high hydraulic gradient compared with that in natural cases. The angle pattern, which is represented by the case of intersecting fractures, affects the ratio of the outlet flow rate distribution （ε）. The effects for all cases are presented. Keywords：