Open AccessThe Effect of Check Dam Installation and Gabion with Distance Variation at River Turn using a Laboratory Test Model
Author(s) -
Dian Eksana Wibowo,
Dewi Wisnu Wardani,
E. C. P. Vicky
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/366/1/012012
Subject(s) - flume , geotechnical engineering , hydrology (agriculture) , environmental science , geology , mathematics , flow (mathematics) , geometry
Scour or avalanche is a problem that often occurs in river turn. One of the cliff guard buildings are check dam and gabion. This research aims to determine the effect of the distance variation of check dam and gabion installation at the river turn. This test is hydraulic model test using river flume with turn length of 5 m, width of 0.8 m, and height of 0.5 m with trapezoidal channel. Observation’s held with a constant discharge of 7.07 liters / second for 3 hours, the angle for check dam was 90° with 3 distance variations were 68 cm, 85 cm and 102 cm, while the gabion angle was 30° with distance variation of 17 cm, 34 cm, and 51 cm. The scour occurred in the river model without protection was 4.70 cm, while the scour occurred in the river model with check dam was -4.32 cm (3.08%), -3, respectively. 69 cm (1.21%), -3.72 cm (1.25%). The results of gabion tests were 3.01 cm (7.9%), -1.07cm (0.22%), -2.07 cm (0.27%). The results of the tests showed the check dam reinforcement effectively used at the beginning and the center of the turn, while at the end of the gabion.