岩体单裂隙辐向渗流尺寸效应可视化试验

现代矿业 ›› 2020, Vol. 36 ›› Issue (08): 86-.

岩体单裂隙辐向渗流尺寸效应可视化试验

陆佳莹^1，2

1.浙江省岩石力学与地质灾害重点实验室；2.绍兴文理学院土木工程学院

出版日期:2020-08-25 发布日期:2021-09-18

Visualization Test of Size Effect of Singlefracture Seepage in Rock Mass

Lu Jiaying^1，2

1.Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province;
2.School of Civil Engineering,Shaoxing University

Online:2020-08-25 Published:2021-09-18

摘要/Abstract

摘要： 裂隙岩石大量存在于各种实际工程中，岩石裂隙渗透性随尺寸的改变而改变，但影响渗流尺寸效应的因素众多，其控制机理也尚未明了。采用了辐向流作为研究模型，对人工单裂隙进行了渗流试验，同时利用有机玻璃的可视性，观测了裂隙内流体流动情况，进一步分析了不同粗糙度对岩石单裂隙渗透性的影响。试验结果表明：在岩石单裂隙辐向渗流中，岩石裂隙渗透性存在尺寸效应，其渗透性随岩石裂隙尺寸的增大而增大，且粗糙度越大，渗透性随尺寸增大的速度越缓慢。

关键词: 尺寸效应粗糙度可视化

Abstract: Racked rock exists in a large number of practical projects,and the permeability of rock fracture changes with the size,However,there are many factors affecting the seepage size effect,and the control mechanism is not clear.In this experiment,radial flow is used as the research model to carry out seepage test on artificial single fracture,at the same time,using the visibility of polymethyl methacrylate,observe the fluid flow in the fracture,so as to further analyze the influence of different roughness on the permeability of single fracture.The results show that there is a size effect on the permeability of rock fractures in radial seepage of single fracture,the permeability increases with the increase of fracture size,and the greater the roughness,the slower the permeability increases with the size.

Key words: Size effect,Roughness,Visualization

陆佳莹, . 岩体单裂隙辐向渗流尺寸效应可视化试验[J]. 现代矿业, 2020, 36(08): 86-.

Lu Jiaying, . Visualization Test of Size Effect of Singlefracture Seepage in Rock Mass[J]. Modern Mining, 2020, 36(08): 86-.