{"_buckets": {"deposit": "c964128e-e753-42e4-8b11-05450223d90f"}, "_deposit": {"created_by": 10, "id": "5682", "owners": [10], "pid": {"revision_id": 0, "type": "depid", "value": "5682"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00005682", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2012", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "4", "bibliographicPageEnd": "236", "bibliographicPageStart": "223", "bibliographicVolumeNumber": "65", "bibliographic_titles": [{"bibliographic_title": "物理探査", "bibliographic_titleLang": "ja"}, {"bibliographic_title": "物理探査", "bibliographic_titleLang": "en"}]}]}, "item_10001_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "斜面に浸透した水によって地盤や岩盤の強度が低下し，地すべりや岩盤崩壊などが起こりやすくなるので，このような斜面災害の防災を考える上で，斜面内の水分状況の時間変化を空間的に把握することが重要とされている。その把握方法の一つとして比抵抗モニタリングの適用があげられる。その有効性を検証するため，我々は盛土の斜面で比抵抗モニタリングの実験を行った。本研究では，2011年2月から約1か月おきに1年間の比抵抗法電気探査の繰り返し測定を行い，また2011年9月末から10月上旬にかけての2週間には降雨の前後で6時間おきの短期連続観測を行った。1年間の繰り返し測定では，盛土中の比抵抗は湿潤な夏季に低くなり，乾燥する冬季に高くなるという季節変化が明瞭にとらえられた。比抵抗の長期的な変化は主として温度変化によるものと考えられるが，短期的な変化には降雨による水分変化が大きく反映されている。そこで，比抵抗に温度補正を行ったところ，体積含水率との負の相関が明らかになった。このことは，温度補正をすることで比抵抗モニタリングから長期の水分変化の推定ができることを示している。また，降雨の前後で実施した短期連続観測では，降雨による盛土中の体積含水率の急な変化が比抵抗変化として把握できることが示された。比抵抗と体積含水率との間には明瞭な線形関係が認められないので，比抵抗変化から体積含水率の変化を定量的に求めることは難しいものの，低飽和領域における斜面内の水分変化の監視に比抵抗モニタリングが有効であると判断できる。\u003cbr\u003e", "subitem_description_language": "ja", "subitem_description_type": "Other"}, {"subitem_description": "\u0026emsp;For prevention of disastrous slope failures, it is important to be able to monitor changes in water content within a slope in both time and space, because permeating water reduces the strength of the foundation of the slope and increases the likelihood of landslides and base rock collapses. We tested the effectiveness of geoelectrical measurements for monitoring movement of moisture within the slope of an experimental embankment, performing monthly resistivity surveys during the year starting February 1, 2011. The results clearly show seasonal changes in the resistivity structure of the embankment, with resistivity becoming low in the summer wet season and high in the winter dry season. This seasonal resistivity pattern is a response mainly to changing temperature, while shorter-term changes in resistivity correspond to changes in water content caused by rain. The change in temperature-compensated resistivity is inversely proportional to the change in volumetric water content, indicating that changes in water content in the embankment can be estimated by resistivity monitoring in conjunction with temperature correction. We also conducted continuous geoelectrical measurements for a two-week period that included an episode of heavy rain. The result shows that a sudden change in water content accompanying the rain was detectable by the resistivity change. It is difficult to derive water content quantitatively from geoelectrical data because the resistivity change does not have a linear relation to the water content change, but resistivity monitoring using the geoelectrical method is effective for monitoring changes in water content in zones of low saturation within the slope of an embankment.\u003cbr\u003e", "subitem_description_language": "en", "subitem_description_type": "Other"}]}, "item_10001_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "社団法人 物理探査学会", "subitem_publisher_language": "ja"}, {"subitem_publisher": "The Society of Exploration Geophysicists of Japan", "subitem_publisher_language": "en"}]}, "item_10001_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.3124/segj.65.223"}}]}, "item_10001_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "0912-7984", "subitem_source_identifier_type": "ISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "高倉伸一", "creatorNameLang": "ja"}, {"creatorName": "高倉伸一", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "吉岡真弓", "creatorNameLang": "ja"}, {"creatorName": "吉岡真弓", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "内田洋平", "creatorNameLang": "ja"}, {"creatorName": "内田洋平", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "石澤友浩", "creatorNameLang": "ja"}, {"creatorName": "石澤友浩", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "酒井直樹", "creatorNameLang": "ja"}, {"creatorName": "酒井直樹", "creatorNameLang": "en"}]}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "jpn"}]}, "item_title": "比抵抗モニタリングによる盛土中の水分変化の推定", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "比抵抗モニタリングによる盛土中の水分変化の推定", "subitem_title_language": "ja"}, {"subitem_title": "Resistivity monitoring for estimation of changes in water content in an embankment", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "10", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/5682", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2024-05-06"}, "publish_date": "2024-05-06", "publish_status": "0", "recid": "5682", "relation": {}, "relation_version_is_last": true, "title": ["比抵抗モニタリングによる盛土中の水分変化の推定"], "weko_shared_id": -1}