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An experimental investigation on the mechanism of fluid flow through single rough fracture of rock

查看全文 作　　者：JU [1,2]Yang;ZHANG [3]QinGang;YANG [3]YongMing;XIE [4]HePing;GAO [2]Feng;WANG [3]HuiJie 高影响力作者 机构地区：[1]State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology;[2]State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology;[3]School of Mechanics and Civil Engineering,China University of Mining and Technology;[4]Key Laboratory for Energy Engineering Safety and Disaster Mechanics of the Education Ministry,Sichuan University高影响力机构 出　　处：《Science China(Technological Sciences)》索引2013年第56卷第8期,共11页高影响力期刊 基　　金：supported by the National Science Funds for Distinguished Young Scholar of China (Grant No. 51125017);the National Basic Research Program of China (Grant Nos. 2010CB226804,2011CB201201);the National Natural Science Foundation of China (Grant No. 50974125);the International Cooperation Project of Ministry of Science & Technology of China (Grant No. 2012DFA60760-2);NSFC International Cooperation and Exchange Program (Grant No. 51120145001) 摘　　要：The structure of fractures in nature rock appears irregular and induces complicated seepage flow behavior.The mechanism and quantitative description of fluid flow through rock fractures is a difficult subject that has been greatly concerned in the fields of geotechnical,mining,geological,and petroleum engineering.In order to probe the mechanism of fluid flow and the effects of rough structures,we conducted a few laboratory tests of fluid flow through single rough fractures,in which the Weierstrass-Mandelbrot fractal function and PMMA material were employed to produce the fracture models with various fractal roughnesses.A high-speed video camera was employed to record the fluid flow through the entire single rough fracture with a constant hydraulic pressure.The properties of fluid flow varying with the fracture roughness and the influences of the rough structure were analyzed.The components of flow resistance of a single rough fracture were discussed.A fractal model was proposed to relate the fluid resistance to the fracture roughness.A fractal equivalent permeability coefficient of a single rough fracture was formulated.This study aims to provide an experimental basis and reference for better understanding and quantitatively relating the fluid flow properties to the structures of rock fractures. 关 键 词：实验室测试 流体流动 岩石裂隙 粗糙度 岩石裂缝 机制 分形函数 维尔斯特拉斯
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