Open AccessProtecting Riverbank’s Environment Towards Scour with Combined Reinforcement of Gabion and Tetrapod: a Laboratory Model Study
Author(s) -
Satoto E. Nayono,
Yoga Bayu Prabowo,
Dian Eksana Wibowo,
Didik Purwantoro
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1625/1/012064
Subject(s) - flume , tetrapod (structure) , reinforcement , geotechnical engineering , channel (broadcasting) , flow (mathematics) , geology , engineering , structural engineering , mathematics , geometry , geomorphology , electrical engineering
The purpose of combined reinforcement installation is to direct the water flow and to reduce the scour process in order to protect the riverbank. The study was conducted by employing a laboratory model using a trapezoidal flume/channel with dimensions of 0.8 m width and 0.5 m height. The length of river bend model was 5 m. Observation was made with a constant flow rate of 7.07 liters/second. Tetrapod and gabion were installed at the angle of 45° and a distance of 51 cm. The running duration of installation variation was 180 minutes each. The results of the test showed that the river model with tetrapod-gabion-tetrapod reinforcement experienced an average scour of 4.16 cm for the beginning, 1.08 cm for the middle and 3.3 cm for the end. The gabion-tetrapod-gabion reinforcement can be considered as more effective reinforcement combination to reduce scour with an average scour of 4.03 cm in the beginning of the channel, 2.64 cm in the middle of the channel and 1.97 in the end of the channel.