FLOW CHARACTERISTICS OF FRACTAL FRACTURE WITH DIFFERENT FRACTAL DIMENSION AND DIFFERENT FRACTURE WIDTH

被引：1
|
作者：
Liu, Jun-Jun [1 ,2 ]
Xie, Jing [1 ,2 ]
Liu, Yi-Ting [1 ,2 ]
Liu, Gui-Kang [1 ,2 ]
Tang, Rui-Feng [1 ,2 ]
Ye, Si-Qi [1 ,2 ]
机构：
[1] Sichuan Univ, Coll Water Resource & Hydro Power, Chengdu, Peoples R China
[2] Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu, Peoples R China
来源：
THERMAL SCIENCE | 2021年 / 25卷 / 06期
基金：
中国国家自然科学基金;
关键词：
single fracture; fractal dimension; fracture width; hydraulic gradient index; VARIATIONAL INEQUALITY FORMULATION; UNCONFINED SEEPAGE; FLUID-FLOW; CUBIC LAW; ROCK; SURFACE;
D O I：
10.2298/TSCI2106477L
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
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 steadystate 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.
引用
收藏
页码：4477 / 4484
页数：8
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