UTokyo Repository 東京大学

UTokyo Repository >
131 地震研究所 >
東京大学地震研究所彙報 >

このページ(論文)をリンクする場合は次のURLを使用してください: http://hdl.handle.net/2261/10407

タイトル: 46. 昭和13年5月9日及び15日の磐梯山麓川上溫泉附近に於ける山津浪亞びに流下せる火山灰質土砂の二三の物理的性質
その他のタイトル: The Mud Flow that occurred near the Explosion-crater of Mt.Bandai in May 9 and 15, 1938, and some Physical Properties of Volcanic Mud
著者: 飯田, 汲事
著者(別言語): Iida, Kumizi
発行日: 1938年9月20日
出版者: 東京帝国大学地震研究所
掲載誌情報: 東京帝国大学地震研究所彙報. 第16冊第3号, 1938.9.20, pp.658-681
抄録: On May 9 and 15, 1938, a mud flow invaded the Kawakami Hot Springs, a resort about 3km from the explosion-crater of Mt. Bandai, Ilukusima Prefecture, and besides demolishing ten houses, killed and wounded a few people. This paper gives a general description of the mud flow and its phenomena, namely, certain physical properties such as the coefficient of viscosity, modulus of elasticity, cohesional force, and the frictional angle of the mud. In the present case the velocity of the mud flow was estimated about 25 m/sec, the coefficient of viscosity of the mud taken from Kawakami arrived at by experiment is of the order of 10 (c.g.s,) with 40 per cent water content, and 103 (c.g.s.) with a 23 per cent water content. This coefficient decreases somewhat rapidly with increase of water content. The modulus of elasticity decreases also with the water content, but its cohesive strength suddenly increases between 5~15 per cent water content, the maximum value being reached at 10 per cent. The frictional angle of certain kind of mud increases also between 10~20 per cent water content. The frictional angle and the cohesive strength of the mud as it flowed on May 9 and 15 must have been smaller than the foregoing values, as, according to estimate, the water content of the mud at that time was about 40~60 per cent.
URI: http://hdl.handle.net/2261/10407
ISSN: 00408972


ファイル 記述 サイズフォーマット
ji0163010.pdf3.38 MBAdobe PDF見る/開く



Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - ご意見をお寄せください