{"title":"Development of an Acoustic Emission System with the Use of Active and Dummy Sensors and Its Application to the Landslide of Babadag Town in Turkey","authors":"Taishi Abe, H. Tano, Aydan Omer","doi":"10.5110/JJSEG.49.13","DOIUrl":"https://doi.org/10.5110/JJSEG.49.13","url":null,"abstract":"本論は地盤や岩盤の挙動を知るための計測手法の一つであるAEの信頼度を高めるために新たに提案した手法の構築方法とこれを現場に適用した結果をとりまとめたものである. 本論で開発したAD法は, 2チャンネルのセンサーのうち1個は対象物に接し (アクティブ: A), 他方 (ダミー: D) はアクティブの近傍に設置するが, 対象から離して設置し, 2チャンネルを一組とする新たなAEカウントシステムでノイズ対策を従来よりも工夫した方法である. この手法をトルコのババダー地すべりに適用してきた. ここでは, 2000年から長期間にわたって本手法を含めたいくつかのモニタリングを実施している. 簡易な現場計測手法の一つである地表面変位やその他の計測結果を併せて, 地すべりの挙動を把握するとともに, これらとAEカウントの関係を考察している. AD法がノイズの影響を低減するために有効であることを明らかにしている. 地すべりの長期のモニタリングが必要となる場合, 本論で開発したAD法を用いAE計測することで地すべり活動の評価指標として将来役立つと思われる.","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"362 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123190896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Outcrop of the Median Tectonic Line Shobudani Fault which Appeared in the Construction Spot of Hashimoto City in Wakayama Prefecture, Southwest Japan","authors":"Takayuki Matsumoto","doi":"10.5110/JJSEG.49.34","DOIUrl":"https://doi.org/10.5110/JJSEG.49.34","url":null,"abstract":"和歌山県橋本市隅田町において中央構造線の断層露頭を見いだした. この露頭は和泉層群が菖蒲谷層群に衝上するもので, 第四紀前期に活動した菖蒲谷断層である. 小論は本露頭を記載し, 断層の連続性と活動についてまとめたものである. 菖蒲谷断層は地下深部で北方の五条谷断層と収れんすること,0.8～0.7Ma頃に断層運動が不活発になっていることを述べた.","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":" 426","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113946783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Trends in Proposed Amendments to the Soil Contamination Countermeasures Law and Related Points at Issue","authors":"H. Takashima","doi":"10.5110/JJSEG.49.38","DOIUrl":"https://doi.org/10.5110/JJSEG.49.38","url":null,"abstract":"","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121653844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Geological Risk and Decision Making for Project Implementation","authors":"Y. Onoi","doi":"10.5110/JJSEG.48.318","DOIUrl":"https://doi.org/10.5110/JJSEG.48.318","url":null,"abstract":"","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121756842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Estimation and Evaluation of Ground-related Disasters due to Earthquakes.","authors":"Kozaburo Fukuzuka, Y. Kanaori","doi":"10.5110/JJSEG.48.324","DOIUrl":"https://doi.org/10.5110/JJSEG.48.324","url":null,"abstract":"","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117180085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of Disaster Features using Slope Disaster Database of National Roads","authors":"Yoshinori Yajima, Y. Sasaki, T. Kurahashi","doi":"10.5110/JJSEG.48.304","DOIUrl":"https://doi.org/10.5110/JJSEG.48.304","url":null,"abstract":"平成2年4月から平成16年12月にかけて, 一般国道指定区間で発生した1, 310件の斜面災害 (落石, 表層崩壊, 岩盤崩壊, 地すべり, 土石流, 路面異常) 事例からデータベースを作成し, これを用いて道路斜面災害の特徴や地域性, 地質・地形・雨量等の要素と災害発生との相関について分析をおこなった.","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122866039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Risk Analysis of Geologic Survey using 3 Dimensional Modeling","authors":"Yoshitaka Hayashi, H. Ohta","doi":"10.5110/JJSEG.48.299","DOIUrl":"https://doi.org/10.5110/JJSEG.48.299","url":null,"abstract":"地盤モデルを作成する場合, 地質技術者は地質学の基本原理と彼らの調査経験を基にして作成する. 一方, 近年のIT化により3次元地質モデルを作成するソフトウエアが発達し, 実用に具されることになった. これらソフトウエアは地質技術者により区部された地層境界や岩盤区分を柱状図から直接3次元で自動補間するばかりでなく, 地球統計学的手法を使って, 統計的な確からしさ (または不確実性) まで数値で表現できるようになった. 筆者らは, この地球統計学的手法を利用し, (1) 地質調査におけるリスク評価を行った事例を示し, さらに (2) リスクの階層性, (3) リスクコミュニケーションの事例について紹介する.","PeriodicalId":303204,"journal":{"name":"Journal of the Japan Society of Engineering Geology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134000447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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