中文摘要：

采用光滑平行板模拟岩体裂隙,研制可变裂隙开度、高水力梯度、自循环水流的单裂隙室内渗流模型试验装置。试验研究宽裂隙高水力梯度下的非达西渗流运动规律,建立流速与水力梯度的非线性关系曲线。将试验结果与Lomize紊流公式、速宝玉紊流半经验公式进行对比分析,发现三者在低水力梯度情况下结果较为一致,对于高水力梯度情况会出现较大的差异。最后探讨单裂隙高流速非达西渗流运动特点及判别准则等问题,建立非达西渗流流速与裂隙开度的关系曲线,以便于工程应用。

英文摘要：

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.