| ID | 74535 |
| タイトルヨミ | 2004 ネン タイフウ 21 ゴウ ゴウウ ニヨリ カガワケン セイサン チイキ デ ハッセイ シタ シャメン ホウカイ ノ チシツ チケイテキ トクチョウ
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| タイトル別表記 | Geological and geomorphological features of slope failures caused by heavy rainfall associated with Typhoon 0421 in Seisan Area, Kagawa Prefecture
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| 著者 |
廣田, 甫
太洋工業株式会社
竹中, 優太
三谷セキサン株式会社
岡田, 憲治
気象庁天気相談所
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| キーワード | Slope failure
Critical rainfall
Izumi Group
Weathered profile
soil water index
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| 資料タイプ |
紀要論文
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| 抄録 | Many slope failures and debris flows triggered by heavy rainfall associated with Typhoon 0421 occurred in Seisan area, Kagawa Prefecture, Japan. Critical rainfall to trigger the slope failure is 65mm/h, 150mm/3h, total precipitation 250mm, and soil water index 180. Many slope failures occurred at side-slope and/or debris filled floor of 1-order valley in mountain slopes consisting of alternating beds of sandstone and mudstone (Izumi Group). Field evidence suggests that rainwater penetrated into permeable weathered sandstone layer lying on poor permeable mudstone layer. Many slope failures occurred at weathered sandstone layer because of low strength and a rise in the groundwater level. The occurrences of slope failures were controlled by weathered profile of alternating beds of sandstone and mudstone.
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| 掲載誌名 |
徳島大学総合科学部自然科学研究 = Natural Science Research, The University of Tokushima
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| ISSN | 09146385
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| cat書誌ID | AN10065859
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| 巻 | 24
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| 号 | 4
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| 開始ページ | 75
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| 終了ページ | 85
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| 並び順 | 75
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| 発行日 | 2010
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| EDB ID | |
| フルテキストファイル | |
| 言語 |
jpn
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| 部局 |
理工学系
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