POROSITY ESTIMETION METHOD OF DEPOSITION SEDIMENT BY DEBRIS FLOW AND APPLICABILITY OF EULERIAN DEPOSITION MODEL AS POROSITY PREDICTION
POROSITY ESTIMETION METHOD OF DEPOSITION SEDIMENT BY DEBRIS FLOW AND APPLICABILITY OF EULERIAN DEPOSITION MODEL AS POROSITY PREDICTION
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泥石流沉积物孔隙度估算方法及欧拉沉积模型在孔隙度预测中的应用
DOI：
10.11532/river.27.0_673
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
林勇輔・内田龍彦・濱田隆敬・堀博幸・加國奈緒子
中科院分区：
文献类型：
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作者：
松本翔剛;髙橋大智;中村優太;山下大輔;奥村賢直;鎌滝晋礼;古閑一憲;白谷正治;板垣奈穂;林勇輔・内田龍彦・濱田隆敬・堀博幸・加國奈緒子
创纪录的暴雨发生在2018年7月，广岛县发生了许多泥石流。大量泥沙流入河流，造成泥沙洪水泛滥。泥石流是沉积物的来源，它由广泛的粒度分布组成，包括岩心石等巨石。正确评价泥石流沉积物的粒度分布和孔隙度，对河流入流泥沙量的估算具有重要意义。本次研究的重点是雅诺河，这里发生了泥石流，沉积了大量的沉积物。对燕诺河上游的沙波坝进行了粒度分布和孔隙度测量。我们还利用得到的粒度分布应用欧拉沉积模型，并与局部测量结果进行了比较。
The record heavy rain occurred in July 2018, and many debris flows occurred in Hiroshima Prefecture. The large amounts of sediment flowed into rivers and caused sediment-flood inundations. The debris flow, which is source of sediment, is composed of a wide range of grain size distributions, including megaliths such as core stones. It is important to estimate the amount of sediment inflow into rivers to properly evaluate the grain size distribution and porosity of debris flow deposited sediment. This research focus on the Yano-river, where debris flow was occurred and large amounts of sediment was deposited. We measured grain size distribution and porosity at sabo dam upstream of Yano-river. We also applied the Eulerian deposition model using the grain size distribution obtained there and compared it with the local measurement results.