The impact force due to huge boulders of the debris
flow is very large and can easily cause damages to debris
control structures. It is intended to carry out impact tests
to evaluate the effectiveness of using wasted-tire cushion
device on reducing the maximum impact force. Both impact
forces and deflection were recorded by using an iron ball
striking wasted-tire cushion device.
In this study, two experiments, scour experiment and sedimentation experiment,
are utilized on the U-turn horizontal section of fish way to examine causes
which lead to sedimentation situation. Through scour experiment, the silt
clearance capacity of clear-water discharge revealed on U-turn horizontal
section of fish way is explored. On the other hand, while proceeding
sedimentation experiment some elements are setting T-bone structure, etc.
Adding sand following by a period time, we inspect how sand particle
affects sedimentation furthering to see whether fish way is blocked accordingly.
There is a repeated phenomenon of the screen device. How much gravel
can be block that will according to the gauage of infiltration spacing,
hence the clear spacing of the bars of the screen, the infiltration
angle of ingiltration screen, the length of the bar of the screen are
all important factors.