Dams and Reservoirs最新文献

Undertaking RARS assessments for Hong Kong reservoirs 為香港水塘進行「嚴重急性呼吸系統綜合症」評估

Dams and Reservoirs Pub Date : 2024-05-05 DOI: 10.1680/jdare.2024.2

Alice M. Davis

引用次数: 0

Dunside reservoirs discontinuance – taking a new approach 邓赛德水库停建--采用新方法

Dams and Reservoirs Pub Date : 2024-05-05 DOI: 10.1680/jdare.2024.3

Matthew Craig

引用次数: 0

Leeds FAS2 FSR: environmental challenges for the design of an in-river control structure 利兹 FAS2 FSR：设计河内控制结构面临的环境挑战

Dams and Reservoirs Pub Date : 2024-05-05 DOI: 10.1680/jdare.2024.7

Emily Hale

{"title":"Leeds FAS2 FSR: environmental challenges for the design of an in-river control structure","authors":"Emily Hale","doi":"10.1680/jdare.2024.7","DOIUrl":"https://doi.org/10.1680/jdare.2024.7","url":null,"abstract":"As flood risk authorities look to counter increasing peak river flows due to a changing climate, traditional linear flood defences are in many cases proving to be an unsustainable method of managing flood risk. Full containment of flows in the river channel will require ever increasing defence heights, cutting off communities from their rivers and natural heritage. Upstream flood storage provides a potential alternative means of flood management, allowing the peak of the flood to attenuate and downstream river levels to be kept within a tolerable range. The Leeds Flood Alleviation Scheme Phase 2 (FAS2) uses a combined approach: linear defences are constructed in urban reaches and complemented by an online flood storage reservoir (FSR) upstream of the city. The FSR halves the annual probability of defences overtopping within the city centre from 1% to 0.5%, achieved through active variable flow control at the FSR. This paper explores some of the challenges faced in the design and construction the in-river flow control structure which is integral to the operation of the FSR. In particular this paper will consider some of the key environmental objectives for the scheme and offer considerations for working in a dynamic and environmentally sensitive fluvial environment.","PeriodicalId":39070,"journal":{"name":"Dams and Reservoirs","volume":"328 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141011848","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}

引用次数: 0

Simulating a reservoir on-site flood plan test: Operation Redbrook 模拟水库现场洪水计划测试：红溪行动

Dams and Reservoirs Pub Date : 2024-05-05 DOI: 10.1680/jdare.2024.4

Merlin Davis

{"title":"Simulating a reservoir on-site flood plan test: Operation Redbrook","authors":"Merlin Davis","doi":"10.1680/jdare.2024.4","DOIUrl":"https://doi.org/10.1680/jdare.2024.4","url":null,"abstract":"The Canal and River Trust, undertaker for 71 high-risk reservoirs, has developed a schedule to conduct a desktop test annually and a full incident simulation exercise every five years. The paper covers the methodology for developing the desktop test, integrating international best practices and strategies from other industries. Practical insights for effectively conducting a desktop exercise, ranging from the selection of failure mode scenarios to debriefings, are provided. The importance of a full simulation was highlighted following the Toddbrook incident. The paper describes how to organise a simulation exercise and the considerations for selecting a suitable reservoir, based on access, location, stakeholders, failure mode and risk assessments on the backdrop of ‘Operation Redbrook’ conducted in June 2023. Pre-exercise arrangements include failure mode simulation, welfare, weather warnings, media responses and traffic management. The Trust also engaged the Local Resilience Forum, BT Emergency services and the contractor's supply chain. The challenges faced by contractors in deploying emergency pumps raises questions on proportionality of expenditure for crane pads, assessments for utilities, environmental impacts and traffic management. Strategies to disseminate lessons learnt and continuous improvement of the emergency response system within the Trust are covered.","PeriodicalId":39070,"journal":{"name":"Dams and Reservoirs","volume":"335 2‐3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141012000","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}

引用次数: 0

Assessment the stability of earth dams based on construction pace by fuzzy inference logic 用模糊推理逻辑根据施工进度评估土坝的稳定性

Dams and Reservoirs Pub Date : 2024-01-24 DOI: 10.1680/jdare.23.00105a

Mehdi Mohammadi, M. Ershadi, Hamideh Kamyab

{"title":"Assessment the stability of earth dams based on construction pace by fuzzy inference logic","authors":"Mehdi Mohammadi, M. Ershadi, Hamideh Kamyab","doi":"10.1680/jdare.23.00105a","DOIUrl":"https://doi.org/10.1680/jdare.23.00105a","url":null,"abstract":"This study aims to evaluate the earth dam stability fuzzy model based on the pace of construction via influential parameters, including the dam construction time (embankment consolidation time) in the stability analysis of earth dams. A fuzzy inference system based on the Sugeno inference engine was developed, and 620 IF-THEN rules in PLAXIS (Plane Strain and AXIal Symmetry). were used to train the fuzzy system. The input parameters included the dam height, crest width, dam slope, cohesion, friction angle, elasticity modulus, Poisson's ratio, unsaturated unit weight, consolidation (construction) time, and permeability coefficient, with the Factor of Safety (FoS) output. To develop the fuzzy inference system, a triangular membership function (MF) was employed, calculating the influential parameters over five periods in MATLAB (MATrix LABoratory) software. The fuzzy model results were compared to the results of numerical PLAXIS and FLAC (Fast Lagrangian Analysis of Continua) models. The coefficient of determination (R2) was found to be 0.9824 for the PLAXIS and fuzzy model analyses and 0.9753 for the FLAC and fuzzy model analyses. This suggests good agreement between the fuzzy and numerical models, and it can be assumed that the proposed fuzzy model is efficient and effective for the stability analysis, and hence assessment of factors of safety, of earth dams.","PeriodicalId":39070,"journal":{"name":"Dams and Reservoirs","volume":"51 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139600967","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}

引用次数: 0

Wall and pillar drains in puddle clay embankment dams 水坑粘土堤坝中的墙式和柱式排水沟

Dams and Reservoirs Pub Date : 2024-01-22 DOI: 10.1680/jdare.24.00015

A. Brown, David Henthorn Brown, Samuel Tudor, Adam Reynolds

{"title":"Wall and pillar drains in puddle clay embankment dams","authors":"A. Brown, David Henthorn Brown, Samuel Tudor, Adam Reynolds","doi":"10.1680/jdare.24.00015","DOIUrl":"https://doi.org/10.1680/jdare.24.00015","url":null,"abstract":"Puddle clay core embankment dams were built prior to the use of rolled clay core dams and comprise a large proportion of UK dams, the dams relying for their watertightness on adding water to (puddling) the clay until it had an undrained shear strength of around 10kPA, and thus had increased ability to deform without cracking. Such dams sometimes had early forms of unfiltered drains, comprising coarse cobbles, in the downstream shoulder, either to assist construction, and/or to lower the phreatic surface and improve slope stability once the reservoir was in operation. These drains are separate from foundation drains dealing with springs encountered in the foundation excavation and drains to deal with surface runoff. This paper gives examples of such drains in dams constructed between 1863 and 1940. These drains were installed prior to the development of classic filter design rules and tools to analyse seepage. This is important as the drains have no filter, and are thus vulnerable to internal erosion which, if not detected, could lead to failure of the dam. These drains may also be the true root cause of historic incidents at these dams, due to embankment fill materials washing into the drain and creating sinkholes.","PeriodicalId":39070,"journal":{"name":"Dams and Reservoirs","volume":"80 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139606120","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}

引用次数: 0

From Chingford to Carsington: impact of soil mechanics on dam construction, 1937-1987 从金福德到卡辛顿：土壤力学对大坝建设的影响，1937-1987 年

Dams and Reservoirs Pub Date : 2023-12-17 DOI: 10.1680/jdare.23.00299

J. Andrew Charles

引用次数: 0

Restoring with risk: perceptions of reservoir flood risk in Whaley Bridge 有风险的恢复：对 Whaley Bridge 水库洪水风险的看法

Dams and Reservoirs Pub Date : 2023-12-13 DOI: 10.1680/jdare.23.00500

Sophie Hancock

{"title":"Restoring with risk: perceptions of reservoir flood risk in Whaley Bridge","authors":"Sophie Hancock","doi":"10.1680/jdare.23.00500","DOIUrl":"https://doi.org/10.1680/jdare.23.00500","url":null,"abstract":"Understanding flood risk perceptions is critical for effective flood risk communication. In 2019, heavy rainfall triggered the failure of Toddbrook Reservoir's spillway resulting in a severe flood warning being issued for the Whaley Bridge area. In 2022, a large-scale restoration began at the reservoir. This paper describes perceptions of reservoir flood risk by the residents of Whaley Bridge and experts in environmental science and engineering. Results show that risk perception varies, with residents perceiving reservoir flood risk subjectively and experts perceiving risk objectively. With no previous risk communication, residents did not consider there to be a risk of reservoir failure; moreover, they have trust in Toddbrook's restoration. Meanwhile, experts emphasize that risk can never be fully eliminated, but that the probability of failure is extremely low. Climate change is considered by some as a contributing factor to the event and uncertainties in the risks that it poses has meant that there is a requirement to improve and maintain existing dams to mitigate risk. Findings have demonstrated the importance of more advanced risk communication as well as a necessity to improve flood risk maps for accessibility, awareness and to better account for the probability of failure in order to avoid the misinterpretation of risk. By identifying differing perceptions of risk between experts and residents, data results can be used to enhance reservoir risk communication. This paper is based on the author's undergraduate thesis titled ‘Restoring with Risk: Perceptions of Reservoir Flood Risk in Whaley Bridge’ at Bath Spa University in 2023.","PeriodicalId":39070,"journal":{"name":"Dams and Reservoirs","volume":"84 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139003952","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}

引用次数: 0

ICOLD 2023, Gothenburg Sweden – update on Technical Committee E - Embankment dams 2023 年国际荒漠与土地退化问题会议，瑞典哥德堡 - E 技术委员会的最新情况 - 堤坝

Dams and Reservoirs Pub Date : 2023-12-13 DOI: 10.1680/jdare.23.00600

Alan Brown, Billy Sheehy

引用次数: 0

Discussion: Evaluation of sediment management strategies for Tarbela reservoir 讨论:Tarbela水库泥沙治理策略评价

Dams and Reservoirs Pub Date : 2023-10-20 DOI: 10.1680/jdare.23.00111

Marta Roca, Gregor Petkovsek

引用次数: 0