Integrated Rainwater Management Technology for River and Sewer Systems and Its Application in Disasters Timeline

• Project/Area Number: 16H06100
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Hydraulic engineering
• Research Institution: Kochi University
• Principal Investigator: ZHANG HAO 高知大学, 教育研究部自然科学系理工学部門, 准教授 (90452325)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥22,620,000 (Direct Cost: ¥17,400,000、Indirect Cost: ¥5,220,000); Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2017: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000); Fiscal Year 2016: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
• Keywords: 雨水管理 / 河川 / 下水道 / マンホール / タイムライン / 水工水理学

Outline of Final Research Achievements

In this research, integrated management technology has been developed for pluvial and fluvial floods in urban areas with research methods of field surveys, laboratory experiments and numerical simulations. The mechanism of urban flooding has been clarified by continuous investigation of stormwater flows during rainy seasons in a sewer system and a receiving stream in a pilot area. An advanced numerical simulation model has been developed considering rainwater pathways and has been verified with experiment and field data. Moreover, rainwater management methods for the promotion of effectiveness of existing disaster infrastructure stocks and the enhancement of basin-scale drainage capacity, and planning methods for residents-oriented disaster timeline considering localities have been proposed.

Academic Significance and Societal Importance of the Research Achievements

平成30年西日本豪雨や令和元年東日本台風等連発する災害を機に、豪雨災害における災害リスク・実態把握の遅れ、既存防災施設の限界や高齢者等災害弱者対策の不足などが広く認識されるようになった。本研究で構築できた雨水管理技術と防災行動計画の策定手法は、それらの問題に対して解決案を提示することになり、社会的に意義は高い。また、本研究は現地調査と基礎水理実験により都市水網における流れの水理を解明し、高精度数値モデルを構築した点で学術的に意義は高い。

Research Products

• [Int'l Joint Research] 南昌工学院/武漢大学/大連理工大学(中国)
• [Int'l Joint Research] 武漢大学/北京師範大学/大連理工大学(中国)
• [Int'l Joint Research] 台湾 国立成功大学(その他の国・地域)
• [Int'l Joint Research] 武漢大学/清華大学/大連理工大学(中国)
• [Int'l Joint Research] バングラデシュ工科大学(バングラデシュ)
• [Int'l Joint Research] 武漢大学(中国)
• [Journal Article] Review on hotspots, challenges, and the future of river management strategies in China (2020)
  • Author(s): Ji, Y., Zhang, J., Zhang, H., Liu, X.C., Wu, N.C. and Cai, G.T.
  • Journal Title: Journal of Environmental Biology Volume: 41(1) Issue: 1 Pages: 13-22
  • DOI: 10.22438/jeb/41/1/mrn-1121
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 高知県西南地区を襲った平成30年7月豪雨を振り返る (2020)
  • Author(s): 原忠・張浩・坂本淳
  • Journal Title: 土木学会誌 Volume: 105(2)
• [Journal Article] 高知県安芸市における平成30年7月豪雨時の浸水被害,住民の防災情報活用と避難行動の実態調査 (2019)
  • Author(s): 岡田将治・張浩・ 田内 敬祐
  • Journal Title: 河川技術論文集 Volume: 25 Pages: 127-132
  • Peer Reviewed
• [Journal Article] Modeling of stormwater drainage/overflow processes considering ditches and their related structures (2018)
  • Author(s): Kawaike, K., Zhang, H., Sawatani, T. and Nakagawa, H.
  • Journal Title: Journal of Natural Disaster Sciences Volume: 39 Pages: 35-48
  • Peer Reviewed
• [Presentation] Field investigation of stormwater flows in a sewerage system and receiving stream (2020)
  • Author(s): Zhang, H., Okada, S., Fujiwara, T. and Kawaike, K.
  • Organizer: 令和元年度京都大学防災研究所 研究発表講演会，2020年2月20-21日，京都大学宇治キャンパス
• [Presentation] Integrated management of river and sewer systems for urban flood mitigation (2019)
  • Author(s): Zhang, H., Okada, S., Sassa, K., Fujiwara, T. and Kawaike, K.
  • Organizer: International Workshop of Water Disaster Mitigation and Water Environment Regulation (IWWAW-2019), April 24-27, 2019, Chengdu, China
  • Int'l Joint Research / Invited
• [Presentation] 圧力管渠システムにおけるマンホール内の３次元局所流に関する研究 (2019)
  • Author(s): 張浩・佐々浩司・松田亮・藤原拓・川池健司
  • Organizer: 2019年土木学会全国大会第74回年次学術講演会，令和元年9月3日‐5日，高松
• [Presentation] Pluvial flood disasters in Kochi Prefecture caused by the 2018 Western Japan heavy rainfall (2019)
  • Author(s): Zhang, H. and Ji, Y.
  • Organizer: 第38回日本自然災害学会学術講演会, 2019年9月21日-22日，釧路
• [Presentation] Urban flood simulation considering flow interactions between overland surface and sewer system (2019)
  • Author(s): Zhang, H.
  • Organizer: Second International Scientific Symposium on Water Resources Management and Comprehensive Reclamation of River Basins, November 15-17, 2019, Xi’an, China
  • Int'l Joint Research / Invited
• [Presentation] 豪雨災害の軽減に向けた下水道施設の排水能力評価技術の高度化 (2019)
  • Author(s): 張浩
  • Organizer: 高知から発信する下水道の未来第２回シンポジウム「災害に立ち向かう高知家の下水道」，平成31年1月29日-30日，高知大学
• [Presentation] 宿毛市における浸水災害 (2019)
  • Author(s): 張浩
  • Organizer: 西日本豪雨災害四国地区調査団報告会，平成31年3月2日，愛媛大学
• [Presentation] Investigation of drainage pump operation and its influence on the flow in a receiving stream (2018)
  • Author(s): Zhang, H., Bandou, H., Fujiwara, T. and Okada, S.
  • Organizer: The 13th International Conference on Hydoscience and Engineering, 18-22 June, 2018, Chongqing, China
  • Int'l Joint Research
• [Presentation] 河川氾濫による被害と要因 (2018)
  • Author(s): 張浩・片岡寛志
  • Organizer: 平成30年7月豪雨高知地区現地調査速報会，平成30年9月6日，高知大学
• [Presentation] The 2018 Western Japan Heavy Rain Disaster (2018)
  • Author(s): Zhang, H.
  • Organizer: Sino-Japan Joint Seminar on Urban Flood Management, December 1, 2018, Beijing, China
  • Int'l Joint Research
• [Presentation] Flow dynamics in a sewerage system (2018)
  • Author(s): Zhang, H.
  • Organizer: Special Lecture in Shaanxi University of Science and Technology, May 30, 2018, Xian, China
  • Invited
• [Presentation] Simulation of urban flood process (2018)
  • Author(s): Zhang, H.
  • Organizer: Special Lecture in Beijing Normal University, June 1, 2018, Beijing, China
  • Invited
• [Presentation] Water and sediment related disasters in western Japan caused by the 2018 heavy rainfall (2018)
  • Author(s): Zhang, H.
  • Organizer: Special Lecture in Wuhan University, November 4, 2018, Wuhan, China
  • Invited
• [Presentation] Laboratory experiments on the three-dimensional flow in a junction manhole (2018)
  • Author(s): Zhang, H., Matsuda, T., Fujiwara, T., Kawaike, K. and Sassa, K.
  • Organizer: 平成29年度京都大学防災研究所 研究発表講演会，2018年2月20-21日，京都
• [Presentation] 都市域における小規模水理構造物に着目した雨水排水プロセスのモデル化 (2018)
  • Author(s): 澤谷拓海・張浩・川池健司・中川一
  • Organizer: 平成29年度京都大学防災研究所 研究発表講演会，2018年2月20-21日，京都
• [Presentation] ジオラマ模型による水防災教育の実践 (2017)
  • Author(s): 戸田圭一・石垣泰輔・馬場康之・武田誠・張浩
  • Organizer: 平成２８年度京都大学防災研究所 研究発表講演会
  • Place of Presentation: 京都
  • Year and Date: 2017-02-21
• [Presentation] レーダーネットワークを活用した統合防災システムの構築 (2017)
  • Author(s): 山中稔,佐々浩司,橋本学,中川一,川池健司,張浩,森牧人,村田文絵,寺尾徹
  • Organizer: 平成２８年度京都大学防災研究所 研究発表講演会
  • Place of Presentation: 京都
  • Year and Date: 2017-02-21
• [Presentation] Indigenous knowledge for bank erosion and flood management (2017)
  • Author(s): Zhang, H. and Nakagawa, H.
  • Organizer: 2017 APEC Typhoon Symposium: The Challenges and Opportunities for Typhoon and Flood Forecasting, May 2-4, 2017, National Taiwan University, Taipei
  • Int'l Joint Research / Invited
• [Presentation] . 雨水排除過程に伴う都市放流先河川の水理特性に関する研究 (2017)
  • Author(s): 坂東 光, 張 浩, 藤原 拓, 岡田 将治, 松岡 直明
  • Organizer: 日本流体力学会年会2017. 2017年8月30日-9月1日,東京
• [Presentation] マンホール周辺のエネルギー損失に関する実験的研究 (2017)
  • Author(s): 松田 亮, 張 浩，藤原 拓, 川池 健司
  • Organizer: 日本流体力学会年会2017. 2017年8月30日-9月1日,東京
• [Presentation] レーダーネットワークを活用した統合防災システムの構築 (2017)
  • Author(s): 山中稔・佐々浩司・橋本学・中川一・川池健司・張浩・森牧人・村田文絵・寺尾徹
  • Organizer: 第54回自然災害科学総合シンポジウム，2017年9月14日，京都
• [Presentation] Impacts of drainage discharge on the hydraulics of receiving streams in urban areas (2017)
  • Author(s): Zhang,H., Okada, S.,Sassa, K., Fujiwara, T. and Bando, H.
  • Organizer: The Second International Top-level Forum on Engineering Science and Technology Development Strategy, October 18-20, Nanjing, China
  • Int'l Joint Research / Invited
• [Presentation] Impact of sewer pipe arrangement on hydraulic efficiency of municipal sewerage system (2017)
  • Author(s): Zhang, H., Matsuda, T., Fujiwara, T. and Kawaike, K.
  • Organizer: The 10th International Conference on Challenges in Environmental Science and Engineering, November 11-15, Kunming, China
  • Int'l Joint Research
• [Presentation] 治水事業における環境配慮 (2016)
  • Author(s): 張 浩
  • Organizer: 第15回四国地方治水大会
  • Place of Presentation: 高知
  • Invited
• [Book] Eco-river Dynamics (2019)
  • Author(s): Shu, A., Zhang, H. and Li, C.
  • Total Pages: 289
  • Publisher: Beijing Normal University Publishing Group
  • ISBN: 9787303239702
• [Funded Workshop] The 2nd International Workshop on Urban Flood Management (UFM2019), Sept.11, 2019, Kochi, Japan (2019)