Analysis of Pore Water Pressure and Piping of Hydraulic Well

This paper shows the results of a field appliance study hydraulic well method to prevent embankment piping, which is proposed by Japanese Matsuyama River National Highway Office. The large-scale experiment and seepage analysis were conducted examine well. experimental procedure focused on pore water pressure. levels compared with pressure data, used look over variations. Two different types experiments according installation points wells. velocity almost similar those analyses. Further, oriented from level variations in showed patterns between numerical analysis; however, deeper surface, larger was calculated values. In addition, piping effect location quantitatively examined for an having guide part. As result applying point where occurred, 1.0 m reduced up 86%. because difference riverside protected side reduced, it resulted reducing theoretical gradient change well, decreased linearly From at occurred found be most effective. A good device preventing if installed proper applied.