降雨時のまさ土斜面における土中水分の変動と無効雨量

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Title ( jpn )
降雨時のまさ土斜面における土中水分の変動と無効雨量
Title ( eng )
Moisture Changes and ineffective rainfall on Masado Slopes During Rainfall
Creator
Ha Thi
Sasaki Yasushi
Kano Seiji
Source Title
広島大学大学院工学研究科研究報告
Graduate School of Engineering, Hiroshima University
Volume 53
Issue 1
Start Page 33
End Page 42
Abstract
To predict slope failures induced by rainfall infiltration and groundwater flow it is very important to know behaviors of rainfall infiltration on actual slopes. Authors introduced in another paper about field monitoring system to measure moisture changes and groundwater level which is being carried out on natural Masado slopes near by a debris flow site which occurred on June 29, 1999. In this paper, behaviors of moisture changes during rainfall under consideration of different ground structure will be discussed. Then, in-situ water retention curve and unsaturated coefficient of permeability of Masado which observed from the monitoring results will be discussed. Then, ineffective rainfall, amount of rainfall which supplied to unsaturated layer before groundwater is generated at bottom layer, will be explained which leads to a very important conclusion about the mechanism of the formation water level in highly permeable materials like Masado.
Keywords
Masado
rainfall infiltration
slope stability
water content
suction
groundwater level
NDC
Earth sciences. Geology [ 450 ]
Language
jpn
Resource Type departmental bulletin paper
Publisher
広島大学大学院工学研究科
国立情報学研究所
Date of Issued 2004-12
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 1347-7218
[NCID] AA11700032