V.L. Hariyanto
The crib is a protective building on the river wall towards the flow rate of the river. The purpose of the study is to determine the effect of crib installation with variation in angle at the river turn towards cliff landslide. The research method used is river modeling, with flume size of 5.00 m long, width in 0.80 m, and height of 0.50 m. The results of the study are: (1) tetra pod installation at the river turn shows an effective gradient pattern at the beginning, middle and end of the turn at the angle installation of 30°, 45° and 30° respectively, while the tetra pod with 60° angle is not effective. (2) installation of gabion crib with angular variation at the river turn can be seen effective gradient pattern at the beginning of entering the turn with 30° crib angle, in the middle of the curve the effective gradient pattern at 45° angle, and at the end of the curve the gradient pattern is effective at 30°, while the gabion crib with 60° angle is not effective to be used at the river turn. (3) aligning the current on the protection and reparation of soil impacting cliff of -5.4 cm, scouring on compacted cliff models of -1.8 cm, and the cliff model protected by crib does not experience scour. The conclusion is that crib protection is more effective than river models with soil improvement (compaction method). © 2019 Published under licence by IOP Publishing Ltd.
Department Civil Engineering, Yogyakarta State University, Yogyakarta, Indonesia
