An empirical study of sediment disasters subsequent to earthquake damages

震害泥沙灾害实证研究

• 批准号: 14360085
• 负责人: HAYASHI Setsuo
• 金额: $ 9.41万
• 依托单位: Mie University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14360085/
• 关键词: esrthquake; sediment disaster; landslide, slope failure; debris flow; Taiwan; Fujiwara town, Mie pref.; subsequent disaster after earthquake; heavy rainfall; 侵食・堆積; 地すべり; 三重県宮川災害; 崩壊; 斜面安定解析; 堰止湖

This study consists of two parts that the research for subsequent sediment disasters after the Chi-chi earthquake in Taiwan 1999, and the research for the debris flows in Fujiwara town in Mie prefecture subsequent to an earthquake.1. Research in Taiwana). Geomorphological change in slope failures after earthquakeTo clarify the change of property and form of the slope failure induced by the Chi-chi earthquake, we conduct the basic on site research in two typical damaged areas. In Chu-fen-erh-shan area, we found the spillway from the landslide dam was eroded and some check dams in the stream damaged seriously. In Tsaoling area, we illustrated the 20-meter fallback at the cliff top, which made by the Chi-chi earthquake. And we continued the seismic exploration on site in order to clarify the degradation of ground property after earthquake.b). Typhoon impact after the earthquakeAfter the typhoon impact in the summer of 2004 in Taiwan, sediment disasters on mountainous slope expanded to the northern area of the damaged area by Chi-chi earthquake in 1999. We surveyed in the middle stream of Tachiachi river, and found the typical pattern of a disaster expansion that a debris flow occurs first, after that the main stream is fed by the sediment from tributaries, then the riverbed raises, the flood disaster occurs at last.2. Debris flows research in Fujiwara town in Mie prefectureSeveral debris flows occurred in Fujiwara town subsequent to an earthquake but the causal relationship is not clear. We clarified the main factor for recurrences of debris flows in Fujiwara town were the resumed flow of the sediment in riverbed supplied from upstream and eroded riverbank through the field research. Also, we found that a recurrence of debris flows can be predictable using 10 minutes rainfall data.

本研究分为1999年台湾集集大地震后的后续泥沙灾害研究及地震后三重县藤原镇的泥石流研究两部分.在台湾的研究a）。地震后边坡破坏的地貌变化为了解集集地震后边坡破坏的性质与形态的变化，我们在两个典型的破坏区进行了现场基础研究。在竹粉二山地区，发现滑坡坝的溢洪道被冲刷，河中的一些淤地坝也受到严重破坏。以草岭地区为例，说明集集地震造成的崖顶落差20公尺。为了弄清地震后地基性质的退化情况，我们继续进行了现场地震勘探。地震后的台风影响台湾在2004年夏季的台风影响后，1999年集集地震造成的山坡地泥沙灾害扩大到受灾区的北方地区。在大甲溪中游进行调查，发现灾害扩展的典型模式是先发生泥石流，再由支流泥沙补给干流，然后河床抬高，最后发生洪水灾害.三重县藤原町的泥石流研究地震后藤原町发生了几次泥石流，但因果关系尚不清楚。通过实地调查，阐明了上游补给的河床泥沙回流和河岸侵蚀是藤原镇泥石流复发的主要因素。此外，我们发现，泥石流的复发可以预测使用10分钟的降雨量数据。

项目成果

2004年夏期の台湾山地災害(速報)

2004年夏季台湾山灾（突发新闻）

• 发表时间: 2005
• 期刊: 砂防学会誌 57(5)
• 作者: Kanji;KONDO;Setsuo;HAYASHI;Shinya;NUMAMOTO;Hiromitsu;ISHIBASHI;Hiroshi;KAWABE;Satoshi;TSUCHIYA;Wen-Neng;WANG;川邉 洋;川邉 洋;林 拙郎
• 通讯作者: 林 拙郎

A slope failure analysis of the 921 Chi-Chi earthquake in Taiwan using remote sensing images

利用遥感影像分析台湾921集集地震边坡失稳

• 发表时间: 2004
• 期刊: Journal of the Japan Society of Erosion Control Engineering 57(1)
• 作者: Numamoto S.

1999年台湾集集地震による草嶺の大規模崩壊とその発生要因

1999年台湾集集地震草岭大面积塌陷及其发生因素

• 发表时间: 2003
• 期刊: 砂防学会誌 56・4
• 作者: 地頭薗隆;Shuin Yasuhiro;堀田紀文;Motoyuki USHIAMA;牛山素行;牛山素行;牛山素行;牛山素行;林 拙郎;川邉 洋;川邉 洋
• 通讯作者: 川邉 洋

斜面表層の振動特性と不安定化

边坡表层振动特性及失稳

• 发表时间: 2005
• 期刊: 日本地すべり学会誌 42(2)
• 作者: Kanji;KONDO;Setsuo;HAYASHI;Shinya;NUMAMOTO;Hiroshi;KAWABE;Yutaka;GONDA;Masahiro;KMBORI;Wen-Neng;WANG;Kanji KONDO;近藤 観慈;近藤 観慈;林 拙郎;川邉 洋;川邉 洋;川邉 洋
• 通讯作者: 川邉 洋

Shallow failure of ridge in the Chiu-chiu-feng area of Taiwan induced by the Chi-chi earthquake and its factors

集集地震引发的台湾秋秋峰地区山脊浅层破坏及其影响因素

• 发表时间: 2004
• 期刊: Journal of the Japan Society of Erosion Control Engineering 57(3)
• 作者: Hayashi S.