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

作　　者：JU Yang ZHANG QinGang YANG YongMing XIE HePing GAO Feng WANG HuiJie 

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

出　　处：《Science China(Technological Sciences)》2013年第8期2070-2080,共11页中国科学（技术科学英文版）

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：seepage flow single fracture rough morphology fractal description rock fractures 

分 类 号：TU458[建筑科学—岩土工程]