EXPERIMENTAL STUDY OF NON-DARCY WATER FLOW THROUGH A SINGLE SMOOTH FRACTURE
WANG Yuan1，2，GU Zhigang1，2，NI Xiaodong1，2，LI Dongtian1，2，ZONG Guoqing1，2
(1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering，Hohai University，Nanjing，Jiangsu 210098，China；2. College of Civil and Transportation Engineering，Hohai University，Nanjing，Jiangsu 210098，China)
Abstract：An experimental apparatus is designed for studying the behavior of high velocity non-Darcy water flow through a single fracture. The fracture is constructed by two smooth parallel plates with variable apertures ranging from 0.5 mm to 6 mm. Circle water flow system and high hydraulic gradient are applied. The experiment is carried out and the behavior of non-Darcy water flow with high velocity is studied. A nonlinear relation between velocity of water flow and hydraulic gradient is fitted. Experimental results are compared with Lomize¢s formula and Su¢s formula；and it is found that they are similar when hydraulic gradient is low，but there are big differences when hydraulic gradient is high. Finally，the theoretical analysis of non-Darcy water flow through a single fracture and the related criterion are discussed. The relation between velocity and fracture aperture of non-Darcy water flow is also developed in order to apply conveniently in the engineering.
王媛,顾智刚,倪小东,李冬田,宗国庆，. 光滑裂隙高流速非达西渗流运动规律的试验研究[J]. 岩石力学与工程学报, 2010, 29(07): 1404-1408.
WANG Yuan1，2，GU Zhigang1，2，NI Xiaodong1，2，LI Dongtian1，2，ZONG Guoqing1，2. EXPERIMENTAL STUDY OF NON-DARCY WATER FLOW THROUGH A SINGLE SMOOTH FRACTURE . , 2010, 29(07): 1404-1408.
