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Experiment on Controlling Debris Flowe with Pile Structures
HSU, HUNG MING
|關鍵字:||Debris Flow;土石流;Pile Structure;樁||出版社:||水土保持學系||摘要:||
The purpose of this paper was going to know the influence on
occurrence and flowing of debris flow with changing
compose of piles. The model experiments were conducted in
a flume channel with different soil materials、water
discharges and the steepness of channel bed. And the results
were concluded as follows.
1. Increasing resistance force on sediment was the main function
of the pile structures. Increasing pile density Dr could
reduce the laterally loaded force on each pile.
2.Using the dimensional analysis could derive an equation for
estimating the time of sediment breakdown by seepage,
that was t=0.013(Dt)^0.046*(
k:Darcy coefficient permeability; θ:slope of sediment;
Dt:total pile density; Lp:lenth of pile in
sediment; ψ:angle of internal friction;
θi:slope of seepage line; hp:distance between
ground water level and sediment surface;
3.The interval of piles had much influence on controlling debris
flow in the flow section. Piles constructed with several rows
had more effects for controlling debris flow.
4.Pile structures had less effect than the opening types of
check dam for controlling debris flow.
|Appears in Collections:||水土保持學系|
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