Search Results 1-20 of 2584

  • Prediction of Failure Probability of Cut Slope on Expressway due to Heavy Rainfall via Deep Learning  [in Japanese]

    加村 晃良 , 大塚 智貴 , 風間 基樹 , 長尾 和之 , 澤野 幸輝

    東北地域災害科学研究 = Tohoku journal of natural disaster science 57, 7-10, 2021-03

  • Surface changes of rock slopes in the Hakuba-Daisekkei Valley, northern Japanese Alps  [in Japanese]

    Sugiyama Hirotaka , Narama Chiyuki , Inoue Hiroshi

    <p><b>1.はじめに</b></p><p> 近年,高山帯では岩盤崩落事故が生じており,そのメカニズムの解明は重要な課題である.森林限界以上の高山帯について,南アルプスや北アルプス南部では,地形変化や土砂収支の実態解明の試みや(松岡ほか,2013),不安定斜面の挙動と気象要素の関係についての研究があるが(岩船,1996;西井・松岡,20 …

    Proceedings of the General Meeting of the Association of Japanese Geographers 2021s(0), 171, 2021

    J-STAGE 

  • APPLICATION OF AIRBORNE ELECTROMAGNETIC PROSPECTING TO PREVENTIVE MAINTENANCE MANAGEMENT ON EXPRESSWAY SLOPES  [in Japanese]

    MAKIURA Nobukazu , KAMIDE Sadayuki , SAKURADANI Keiji , OKUMURA Minoru , ODA Kazuhiro , MATSUI Tamotsu

    <p> 高速道路斜面の予防保全管理のためには,広範囲に分布する崩壊危険斜面や地すべり・土石流危険渓流などを精度良く,効率的かつ経済的に抽出する技術が不可欠であるので、筆者らは広域地盤の3次元比抵抗分布を短時間に求めうる空中電磁探査を導入した.本論文では,空中電磁探査による比抵抗絶対値と強調値表示法および新たに開発した対数比抵抗強調値表示法について述べるとともに,広域地盤性状の概略的把握 …

    Journal of Japan Society of Civil Engineers, Ser. F4 (Construction and Management) 77(1), 83-95, 2021

    J-STAGE 

  • STUDY ON AN EVALUATION METHOD OF INITIATION PROBABILITY OF DEBRIS FLOWS DURING HEAVY RAINFALL

    KOBASHI Rikiya , KITA Masato , UCHIDA Tatsuhiko , KAWAHARA Yoshihisa

    … In order to solve this problem, in this paper, the rainfall data of XRAIN with high spatial resolution and the features of the slope failure sites were examined during heavy rainfall events. …

    Journal of JSCE 9(1), 94-102, 2021

    J-STAGE 

  • IMPROVEMENT OF PREDICTION ACCURACY ON RAINFALL-INDUCED SLOPE FAILURES USING A RAINFALL INDEX CONSIDERING MEASUREMENT RESULTS WITH A TENSIOMETER  [in Japanese]

    DANJO Toru , SAKO Kazunari , FUJIMOTO Masamitsu , ISHIZAWA Tomohiro , ITO Shinichi , FUKAGAWA Ryoichi

    <p> 本論文では,計測斜面近傍で表層すべり型崩壊が発生した時の降雨量とテンシオメータによる計測結果を用いて,現地計測結果を加味した雨量指標を提案するとともに,既往の雨量指標との比較を行うことでその有用性を検証した.その結果,本計測地点においては,計測地点で最初に飽和帯が形成されてからの継続時間とその間の平均降雨強度との関係を用いることで,計測期間(2004~2015年)における崩壊時 …

    Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) 77(1), 87-102, 2021

    J-STAGE 

  • A STUDY ON QUANTITATIVE EXTRACTION OF TERRAIN CHANGES CAUSED BY SLOPE FAILURE USING PALSAR-2 DATA AND ANALYSIS OF CHARACTERISTICS OF EXTRACTED AREAS  [in Japanese]

    TABUCHI Taiga , MITANI Yasuhiro , TANIGUCHI Hisatoshi , TIAN Lu , OHTSUJI Yoshinori

    <p> 本研究では,2017年7月九州北部豪雨で発生した斜面崩壊地を対象としてALOS-2/PALSAR-2データを用いて,単偏波後方散乱差分解析,コヒーレンス解析により斜面崩壊に伴う地形変化箇所の抽出を行った.その結果,前者がより精度よく地形変化を抽出できることを明らかにした.さらに,地形変化の抽出箇所に対して,傾斜角,方位角,局所的な入射角などの地形,衛星の特徴の観点から整理を行っ …

    Journal of Japan Society of Civil Engineers, Ser. F3 (Civil Engineering Informatics) 77(2), II_68-II_77, 2021

    J-STAGE 

  • An estimation method of pore water pressure using soil water index in heavy rain and its application to early warning of sediment-related disasters in hilly and mountainous areas  [in Japanese]

    YABE Mitsuru , UENO Shoji , TANIGAWA Masashi , KATSUME Yasunori

    <p> 近年豪雨に伴う土砂災害が頻発しており, それら災害では中山間地域での高齢者などの社会的弱者が犠牲になるケースが見られる。この場合, 社会的弱者が余裕を持った避難が行えるような警戒発令を行うことが重要だが, そのための基準値策定の具体的な方策はまだ見つかっていない。本研究では, 土壌雨量指数を用いた表層崩壊の誘因となる地盤の間隙水圧の推定法について, 中山間地域の長野県辰野町の斜 …

    Journal of the Japan Landslide Society 58(1), 28-39, 2021

    J-STAGE 

  • Influence of Overland Flow on Occurrence of Slope Failures and Debris Flows in Gentle Slopes  [in Japanese]

    秦 雅之 , 海堀 正博

    … Our field survey showed a possibility that overland flow due to these unprecedented heavy rainfalls caused these slope failures. … However, previous numerical models can be applied to a situation where only subsurface flow is generated, but they cannot analyze shallow failures in gentle slope areas. …

    広島大学大学院人間社会科学研究科紀要. 総合科学研究 (1), 47-58, 2020-12-31

    IR  DOI 

  • Simulation of the Initiation and Motion of Seismically Induced Aso-Ohashi Landslide During the 2016 Kumamoto Earthquake

    Shi X , Jiang Y

    … To verify the mechanism of Aso-Ohashi landslide which is the seismically induced slope failure triggered by 2016 Kumamoto earthquake, field investigations and numerical simulations with terrain data measured by airborne laser scanners are carried out. …

    Tehnicki vjesnik - Technical Gazette 27(6), 2044-2052, 2020-12

    IR 

  • Rock and Soil Properties for Slope Failures Caused by Typhoon Hagibis on October 2019: Especially Some Cases around Marumori Town, Miyagi Prefecture  [in Japanese]

    若月 強 , 吉原 直志 , 遠藤 悠一 , 大森 想 , 島田 真紀子

    … を多く含む低透水性の粘性土と硬質な砂礫質岩が露出していた.重茂半島・普代村と丸森町の花崗閃緑岩の鉱物組成は類似していた.また,重茂半島の溶結凝灰岩は,花崗閃緑岩と比較すると,風化を受けやすい黒雲母を欠く細粒の岩石であった.We investigated rock and soil properties for the slope failures induced by Typhoon Hagibis on October 2019 near Marumori Town, Miyagi Prefecture, and the Omoe Peninsula and Fudai Village in Sanriku coastal area, Iwate …

    主要災害調査 = Natural Disaster Research Report (58), 1-18, 2020-12

    IR  DOI 

  • Study on Measurement of Slope Deformation by Using Depth Camera - The Applicability to the Safety Monitoring During Rescue Operations -  [in Japanese]

    尾上 修浩 , 石澤 友浩 , 檀上 徹 , 福囿 輝旗

    … ものの,近距離での計測においては,降雨時という悪条件下においても微小な変位の計測が可能であった.そのため,より高精度のデプスカメラを用いれば,遠距離計測でも微小な変位の検知が可能となるため,既往の変位計測による斜面崩壊予測への適用や消防活動時の安全監視の補助ツールとしても適用が期待できる.This study investigates the effectiveness of using a depth camera to detect the risk of slope failure. …

    防災科学技術研究所 研究報告 = Report of the National Research Institute for Earth Science and Disaster Resilience (85), 1-14, 2020-12

    IR  DOI 

  • Distribution of Slope Movements Caused by Typhoon Hagibis (TY1919) near Marumori Town, Miyagi Prefecture and Sanriku Coastal Area, Iwate Prefecture  [in Japanese]

    若月 強 , 吉原 直志 , 遠藤 悠一 , 大森 想 , 古賀 亘

    … え始め,特に,6 時間雨量が約250 mm かつ24時間雨量が約400 mm を超える場所では斜面変動が密集する傾向がある.斜面変動の発生頻度や個々の斜面変動の規模・流出土砂量は,各地域の雨量差を反映して,丸森町付近が最も大きく,次いで重茂・船越半島が大きくて,普代村はそれより小さいと考えられる.Serious slope disasters were induced by Typhoon Hagibis on October 2019 near Marumori Town, Miyagi Prefecture and Sanriku coastal area, Iwate …

    主要災害調査 = Natural Disaster Research Report (58), 1-14, 2020-12

    IR  DOI 

  • Topographical features of slope failure sites in zero-order basin  [in Japanese]

    沖村 孝 , 鳥居 宣之 , 中川 渉 , 原口 勝則 , 鏡原 聖史 , 根本 信行 , 植田 允教

    建設工学研究所論文報告集 = Memoirs of Construction Engineering Research Institute Foundation (62), 67-80, 2020-11

  • Rock Slope Stability Analysis by Using Integrated Approach

    Moses Dyson , 島田 英樹 , 笹岡 孝司 , 濵中 晃弘 , Tumelo K. Dintwe , Sugeng Wahyudi

    Slope stability assessment is an essential aspect of mining and civil engineering. … In this study, Songwe open-pit mine in Malawi was investigated to establish possible pit slope instability. … The results show that there is a 16% likelihood of planar failure in the divided slope sections of the planned pit. … Thus, slope angle optimisation to 41? …

    World Journal of Engineering and Technology 8(3), 405-428, 2020-08-04

    IR 

  • Evaluation for the pathology of heart failure during exercise with CPX  [in Japanese]

    村田 誠

    Heart view 24(6), 508-513, 2020-06

    Ichushi Web 

  • Multi-stage Failure Simulation for slope stability problem using Hybrid-type Penalty Method  [in Japanese]

    山口 清道 , 山村 和人 , 竹内 則雄 , 寺田 賢二郎

    計算工学講演会論文集 Proceedings of the Conference on Computational Engineering and Science 25, 6p, 2020-06

  • Study of Internal Waste Dump-Induced Shear Stress Behavior on Pit-Slope

    Sugeng Wahyudi , Shimada Hideki , Sasaoka Takashi , Hamanaka Akihiro , Amarsaikhan Tsedendorj , Mao Pisith , Tumelo K. M. Dintwe , Moses Dyson

    … Regardless of beneficial associated with internal waste dump (IWD) method, practices of this method within boundaries of pit-slope have some serious problems on stability issues due to this area is zone of potential failure. … This zone is known as dynamic reactive zone which is easy to deform by external force, and inherent dangers of failure posing a threat to slope. …

    Journal of Geoscience and Environment Protection 8(4), 71-86, 2020-04-21

    IR 

  • Survey on Factors of Geotechnical Disaster due to 2018 Hokkaido Eastern Iburi earthquake  [in Japanese]

    木幡 行宏

    特集

    室蘭工業大学紀要 (69), 3-8, 2020-03

    IR 

  • Slope failures over a wide area in the 2018 Hokkaido Eastern Iburi Earthquake and its evaluation  [in Japanese]

    川村 志麻 , 岸田 航平

    特集

    室蘭工業大学紀要 (69), 13-19, 2020-03

    IR 

  • Disaster report of 2018 July heavy rain for geo-structures and slopes in Okayama

    Nishimura S. , Takeshita Y. , Nishiyama S. , Suzuki S. , Shibata T. , Shuku T. , Komatsu M. , Kim B.

    … In Okayama, many shallow slope failures or debris flows occurred over a wide area, particularly in the western part of the prefecture. …

    Soils and Foundations 60(1), 300-314, 2020-02-29

    IR 

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