IMPACT FORCE OF DEBRIS FLOW ON FILTER DAM
IMPACT FORCE OF DEBRIS FLOW ON FILTER DAM
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DOI：
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发表时间：
2007
影响因子：
9.7
通讯作者：
H. Huang;Kai Yang;Shao-Wun Lai
中科院分区：
文献类型：
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作者：
H. Huang;Kai Yang;Shao-Wun Lai
在冲击力方面，目前的反滤坝和淤地坝的设计多采用经验模型。然而，在回顾文献后，我们发现模型之间存在很大差异。过高估计冲击力的大小是不经济的，而过低估计冲击力的大小又会引起安全上的疑虑。基于弹性碰撞理论，本文试图推导出一种理论碰撞模型。并进行了混合粒径颗粒的水槽实验，对理论碰撞模型进行了修正。因此，更合理的漂石撞击模型可以表示为：F = 30.8 <$U <$R其中F为漂石撞击力（吨），U为漂石移动速度（米/秒），R为漂石半径（米）。
On the aspect of impact force, present design of filter dams and check dams often refers to the empirical models. However, after reviewing literature, we found that there is a great variety between models. It will be an uneconomical way if we overestimate the amount of impact force; On the other hand, underestimation may lead to security misgivings. Based on elastic collision theory, this study tried to derive a theoretical impact model. And, the flume experiment is carried out, with mixed-sized particles, to modify the theoretical impact model. Hence, the more reasonable boulder impact model can be shown as: F = 30.8 ‧U‧R Where F is impact force of boulder (ton), U is moving velocity of boulder (m/s), and R is radius of the boulder (m).