| Title |
Detecting Backward Erosion Piping Using a Tracer |
| Authors |
정원(Jeong, Won) ; 김병욱(Kim, Byunguk) ; 서일원(Seo, Il Won) ; 박용성(Park, Yong Sung) |
| DOI |
https://doi.org/10.12652/Ksce.2023.43.1.0055 |
| Keywords |
제방; 파이핑; 추적자; 소규모 실험; 수두차; 농도곡선 Levee; Piping; Tracer; Small-scale experiment; Head difference; Concentration curve |
| Abstract |
Internal erosion is one of the main causes of levee damage and collapse, and representative of this is backward erosion piping. Thistype of internal erosion accounts for one-third of the damage to levees, meaning it is important to predict and prevent it. In this work,experiments were conducted with the aim of detecting piping in advance by using a tracer. Experiments were undertaken bychanging the head difference, soil diameter, and the installation of the cutoff wall. A tracer was injected twice, once at the beginningof the experiment and once after the piping occurred. A key finding was that the piping process significantly affectedtheconcentration variation of the tracer in a soil layer. Hence, a tracer concentration curve monitored at downstream could provideinformation about piping occurrence. It is expected that the results of this study can be used to prevent levee damage and collapsecaused by piping. |