Internal Erosion in Earthdams, Dikes and Levees - Proceedings of EWG-IE 26th Annual Meeting 2018
Internal Erosion in Earthdams, Dikes and Levees - Proceedings of EWG-IE 26th Annual Meeting 2018
复制标题
土坝、堤坝和堤坝的内部侵蚀 - EWG-IE 2018 年第 26 届年会论文集
DOI：
10.1007/978-3-319-99423-9_9
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Sanvitale N
中科院分区：
文献类型：
--
作者：
Sanvitale N
本文介绍了初步测试从“透明土壤渗透”，已开发的研究机制，发生在内部侵蚀的过滤材料的堤坝。基于实验室的实验利用光学方法，其中使用玻璃颗粒代替土壤，并且使用光学匹配的油代替水。流体和固体的折射率匹配使得粒子和流体的二维“切片”或平面能够在渗透层内部被观察到，远离其壁，通过激光片并由数码相机捕获。开发的设置已经过测试，并表明光学匹配的玻璃和油可以表现出与以前实验室测试中使用的土壤和水材料相似的行为。在这项研究中，我们提出了一个流动特性内的折射率匹配的玻璃珠制成的介质。为此，少量的流体示踪剂内的流体和多孔介质内的速度场的种子是使用PIV测量。
This paper describes preliminary tests from a ‘transparent soil permeameter’ that has been developed to study the mechanisms that occur during internal erosion in filter materials for embankment dams. The laboratory-based experiments utilise an optical approach where glass particles are used in place of soil, and optically matched oil is used in place of water. The refractive index matching of the fluid and solid enables a two-dimensional “slice” or plane of particles and fluid to be viewed inside the permeameter, away from its walls via a laser sheet and captured by digital camera. The developed set up has already been tested and showed that optically matched glass and oil can behave similarly to soil and water materials as used in previous laboratory testing. In this study we present a flow characterization within a refractive index matched medium made of glass beads. To this end a small amount of fluid tracers is seeded inside the fluid and the velocity field inside the porous media is obtained using PIV measurements.