Comparison of Bed Channel Protector in Case of Reducing Length of the MDO Stilling Basin Using 3-D Print Model
摘要
The local scour has occurred by flow discharge movement through the fixed bed to the movable bed. This condition threatens the stability of the end sill of the stilling basin. This paper offers a solution to protect the bed channel using scrap tires woven. The model was conducted by a physical model scale of the 3D-Print MDO stilling basin. The performance evaluation of the bed channel protector was tested with a reduction in stilling basin length, namely L-0.5 m and L-1 m. The model also compares the material protector models, such as rock material and scrap tires woven. The final results show the comparisons of the loss percentage of bed channel between rock material and scrap tires woven are 32.50% and 10.45% at L-0.5 m. The loss percentage at L-1 m is about 34.38% for rock material and 12.91% for scrap tires woven. The other results also discuss the tensile strength of scrap tires woven bolt connection. The average tensile strength for a single bolt connection is about 4621.53 N with measurement travel end reaching 67.46 mm.