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発表 Applicability of remote measurement technology to measure landslide movement in dam site

作成年度 2009年度
論文名 Applicability of remote measurement technology to measure landslide movement in dam site
論文名(和訳) 貯水池地すべりにおける遠隔測量技術の変位計測への適用性
論文副題
発表会 2009 International Joint Symposium between IEGS (Korea)、 NIRE and CERI (Japan)
誌名(No./号数)
発表年月日 2009/11/03 ~ 2009/11/05
所属研究室/機関名 著者名(英名)
防災地質チーム宍戸 政仁(SHISHIDO Masahito)
防災地質チーム伊東 佳彦(ITO Yosihiko)
防災地質チーム日外 勝仁(AGUI Katsuhito)
抄録
To develop economical watching system for landslide around dam reservoirs、 the authors studied the applicability of monitoring system using 3D laser profiler (ground set type) and photogrammetric method using digital camera. We carried out measurement for a landslide around a dam reservoir in north Hokkaido by the 3D laser profiler、 digital camera and GPS. The results were compared with measurement result by ordinary method like strain gage in boring hole. As a result、 though photogrammetric method is able to cover wide landslide area at a low price、 measurement error grows seriously by vegetation. As for 3D laser profiler、 though it is also able to cover wide landslide area and 3D model is easily constructed in a short time、 the equipment is expensive and measurement error grows seriously by vegetation. To keep measurement error in allowable range、 signs like stake or artificial structures like concrete frame which do not covered by vegetation should be measured in and out of landslide. In conclusion、 these remote measurement technologies were applicable to landslide without vegetation、 or landslide having or being set signs or artificial structures which does not covered by vegetation in and out of it.
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