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首页> 外文会议>土木学会;水工学講演会 >TREATMENT OF DEBRIS FLOWINITIATION AND DEVELOPMENT OVER A PARTIALLY SATURATED RIVERBED
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TREATMENT OF DEBRIS FLOWINITIATION AND DEVELOPMENT OVER A PARTIALLY SATURATED RIVERBED

机译：部分饱和河道上泥石流化与发育的处理

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It is common to consider the riverbed as being fully saturated in the treatment of debris flow. However, thefield survey conducted by some researchers1) showed the presence of significant unsaturated deposits afterits occurrence. Our study investigated such phenomena and considered the possible coexistence of bothsaturated and unsaturated layers during the initiation and propagation of the debris flow. The seepage wascoupled to the surface flow and the erosion velocity of unsaturated layers took into account the apparantshear strength due to suction. Compared to the case of saturated bed, results showed when the bed isinitially unsaturated a relatively slow development of debris flow with sediment mostly transported withinan immature regime of debris flow and larger deposits were noticed at the downstream reach, inducing thebedslope to become milder.
机译：在处理泥石流时，通常认为河床已完全饱和。但是，那 一些研究人员进行的实地调查1）显示， 它的发生。我们的研究调查了这种现象，并考虑了两者的可能共存。 泥石流引发和传播过程中的饱和层和不饱和层。渗流是 耦合到表面流动和不饱和层的侵蚀速度考虑了 吸力引起的剪切强度。与饱和床相比，当床处于 最初是不饱和的，泥石流的发展相对缓慢，沉积物大部分在泥石流中输送 在下游河段发现了不成熟的泥石流和较大的沉积物，这导致了 床坡变温和。

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