{"created":"2023-03-31T02:40:42.596164+00:00","id":5738,"links":{},"metadata":{"_buckets":{"deposit":"39d1bec9-8318-41fd-b8d4-cb298fb2ae99"},"_deposit":{"id":"5738","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"5738"},"status":"published"},"_oai":{"id":"oai:nied-repo.bosai.go.jp:00005738","sets":[]},"author_link":[],"item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicPageEnd":"83","bibliographicPageStart":"69","bibliographicVolumeNumber":"11","bibliographic_titles":[{"bibliographic_title":"地盤工学ジャーナル","bibliographic_titleLang":"ja"},{"bibliographic_title":"Japanese Geotechnical Journal","bibliographic_titleLang":"en"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"降雨による表層崩壊発生予測のためのモニタリングにおいて，斜面上のどこで計測を行うかという問題は重要である。これを検討するために，砂質模型斜面に一定強度で散水を行い，斜面下端から異なる位置において地下水位と地表面変位の関係の計測を行った。その結果，地下水位が発生しない個所では地表面変位が進行しないこと，そして地表面変位は地下水位の発生とともに顕著に進行することが判明し，両者の関係は双曲線関係で表せることが判明した。また斜面下端から遠くなるほど，両者の関係において地表面変位が大きくなり，かつ地下水位の最大値が小さくなることが分かった。崩壊発生前の任意の時刻までの計測データから，「地下水位～地表面変位」の回帰式と「時間～地下水位」の回帰式を作成し，それらを組み合わせて「時間～地表面変位」の，そして「時間～地表面変位速度の逆数」の予測式を作成し，崩壊発生時刻の予測を行った。すると地表面変位の計測値が，崩壊時の地表面変位の40%になる時刻までの計測値を用いて予測式を作成すれば，いずれの位置においても60秒以内の誤差で崩壊発生時刻の予測が可能であった。","subitem_description_language":"ja","subitem_description_type":"Other"},{"subitem_description":"Selection of the location of monitoring of the deformation and the groundwater level in the slope is important for time-prediction of an onset of shallow landslides based on the monitoring. The analysis of the monitored data on the surface displacement and the groundwater level at different locations in sandy model slope under artificial rainfall was conducted in this study. The analysis revealed that surface displacement increased with the increase of the groundwater level significantly and the relation between the surface displacement and the groundwater level can be modified as hyperbolic. The surface displacement grew larger and maximum groundwater level was smaller at farther location from the toe of the model slope. Time-prediction of an onset of landslide based on the monitored data at different location on the model slope was conducted as following procedures. (1) To make the regression equation for the surface displacement - the groundwater level relation based on the monitored data at any time before the failure, (2) To make the regression equation for the time - the groundwater level relation based on the data until same time with (1), and (3) To combine the equation (2) to the equation (1) to derive the time - the surface displacement relation. (4) To derive the time - inverse of the surface displacement velocity from the equation (3). The equation for the time - the surface displacement and the equation for the time - the inverse of the surface displacement velocity could simulate the actual phenomena of the model slope well based on the monitored data at any location on the model slope.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"公益社団法人 地盤工学会","subitem_publisher_language":"ja"},{"subitem_publisher":"The Japanese Geotechnical Society","subitem_publisher_language":"en"}]},"item_10001_relation_14":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"10.3208/jgs.11.69"}}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1880-6341","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"笹原 克夫","creatorNameLang":"ja"},{"creatorName":"SASAHARA Katsuo","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"石澤 友浩","creatorNameLang":"ja"},{"creatorName":"ISHIZAWA Tomohiro","creatorNameLang":"en"}]}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_title":"砂質模型斜面上の異なる位置における変位と地下水位のモニタリングに基づく表層崩壊発生時刻の予測","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"砂質模型斜面上の異なる位置における変位と地下水位のモニタリングに基づく表層崩壊発生時刻の予測","subitem_title_language":"ja"},{"subitem_title":"Time prediction of an onset of shallow landslides based on the monitoring of the groundwater level and the surface displacement at different locations on a sandy model slope","subitem_title_language":"en"}]},"item_type_id":"40001","owner":"1","path":["1670839190650"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2023-03-30"},"publish_date":"2023-03-30","publish_status":"0","recid":"5738","relation_version_is_last":true,"title":["砂質模型斜面上の異なる位置における変位と地下水位のモニタリングに基づく表層崩壊発生時刻の予測"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-08T09:29:18.948853+00:00"}