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ID 14201
file
title alternative
Analysis of the Landslide Behavior with the Total Station Survey in Nishi-Ikawa, Tokushima Prefecture, Japan
creator
森 格
笹井 康佑
井上 新平
subject
座標測量
地すべり
測量精度
トータルステーション
面的挙動
coordinate surveying
landslide
spatial behavior
surveying accuracy
total station
NDC
Earth sciences. Geology
abstract
Total station surveying has been done to find out spatially the landslide behavior at the Nishi-Ikawa landslide area in the Tokushima Prefecture. Firstly, errors which were able to enter this surveying have been checked and evaluated in order to grasp correctly the landslide behavior by this surveying method, if human errors could be kept minimum. However, the authors found that the surveying result involved errors even in the each careful set up of the instrument and that obtained 3-dimensional coordinates could be not directly utilized to analyze the landslide behavior. Also, the surveying could be made only in the season from the late autumn to early spring due to the vegetation obstruction. However, it was clarified that the change of the distance between the instrument site and each observed point and the change of the distance among the instrument sites in each surveying could be used to grasp the landslide behavior. From the analytical consideration of the surveying data, the following things were clearly pointed out:(1)There was a compressive tendency on the total area of the Nishi-Ikawa landslide slope.(2)The landslide area consisted of five blocks.(3)The uppermost block moved downwards onto the lower block, and the three middle blocks seemed to be pushed to the outer sides.(4)The road construction with the cutting and filling in 1999 seemed to be not effective to the recent landslide behavior(5)The landslide behavior around the foot part of the lowest slope could not be prevented by the countermeasure with the existing retaining wall only.
journal title
Memoirs of the Faculty of Integrated Arts and Sciences, Hiroshima University. IV, Science reports
volume
Volume 31
start page
99
end page
115
date of issued
2005-12
publisher
広島大学総合科学部
contributor
国立情報学研究所
issn
1340-8364
ncid
SelfDOI
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Integrated Arts and Sciences
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