TY - JOUR
TI - Flow characteristics of fractal fracture with different fractal dimension and different fracture width
AU - Liu Jun-Jun
AU - Xie Jing
AU - Liu Yi-Ting
AU - Liu Gui-Kang
AU - Tang Rui-Feng
AU - Ye Si-Qi
JN - Thermal Science
PY - 2021
VL - 25
IS - 6
SP - 4477
EP - 4484
PT - Article
AB - Single fracture is the most basic element in complex fracture network of rock  mass. Therefore, the study of flow characteristics of single fracture is an  important way to reasonably predict the complex flow state in engineering  rock mass. In order to study the flow characteristics of fractal single  fracture, fracture models with dif­ferent fractal dimension and different  fracture width are established in this paper. The results show that: the  blocking effect of rough structure on fluid is obviously enhanced under high  pressure. In addition, it is weakened and reaches a steady-state with the  increase of fracture fractal dimension. The larger the fracture width is,  the more obvious the phenomenon is. The hydraulic gradient index tends to  0.5 with the increase of fracture width when fractal dimension is greater  than 1.3. It also could tend to 0.5 with the increase of fractal dimension  when fracture width is greater than 1 mm.