caa a22 4500 606223657 CHVBK 20210128101139.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s11204-015-9345-5 doi (NATIONALLICENCE)springer-10.1007/s11204-015-9345-5 Experimental Investigation of the Erosion Mechanisms of Piping [Elektronische Daten] [Jiansheng Chen, Shuang Wang, Yue Liang, Yuan Wang, Yulong Luo] Piping, or backward erosion, resulting in tunneling under an embankment or foundation, is an important phenomenon that can lead to the failure of the embankment or foundation. We have experimentally investigated the erosion mechanism of this piping phenomenon using a laboratory-scale model. We discovered two types of coupled erosion in the evolution of piping through an analysis of the grain size distribution of the eroded mass. Overall, grain sizes in the eroded mass ranged from 0.1 to 0.5 mm. The 0.1-0.25 mm grains were found to dominate when the erosion was induced by stress release, whereas in the case of clogging, the dominant grain sizes were 0.25-0.5 mm. The first form of erosion caused the tunnel to advance upstream, whereas the second increased the depth of the tunnel; otherwise, the two types of erosion were coupled. Furthermore, the eroded mass throughout the evolution of piping was non-uniform and intermittent. Springer Science+Business Media New York, 2015 Chen Jiansheng Hohai University, Nanjing, China aut Wang Shuang Hohai University, Nanjing, China aut Liang Yue Chongqing Jiaotong University, Chongqing, China aut Wang Yuan Hohai University, Nanjing, China aut Luo Yulong Hohai University, Nanjing, China aut Soil Mechanics and Foundation Engineering Springer US; http://www.springer-ny.com 52/5(2015-11-01), 301-309 0038-0741 52:5<301 2015 52 11204 https://doi.org/10.1007/s11204-015-9345-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11204-015-9345-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Jiansheng Hohai University, Nanjing, China aut NATIONALLICENCE 700 1- Wang Shuang Hohai University, Nanjing, China aut NATIONALLICENCE 700 1- Liang Yue Chongqing Jiaotong University, Chongqing, China aut NATIONALLICENCE 700 1- Wang Yuan Hohai University, Nanjing, China aut NATIONALLICENCE 700 1- Luo Yulong Hohai University, Nanjing, China aut NATIONALLICENCE 773 0- Soil Mechanics and Foundation Engineering Springer US; http://www.springer-ny.com 52/5(2015-11-01), 301-309 0038-0741 52:5<301 2015 52 11204