dam safety Articles

  • Dam safety inspections

    This dam safety inspection was carried out to monitor the safety of a stone masonry overflow dam (12m high and 161m long). The geological makeup of the region comprises Ordovician period limestone and loose Quaternary sediments. One set of data was collected by placing 64 ...

  • Dam Inspection: A Day at Still Creek Dam

    We’ve been busy lately visiting various municipalities, police forces, aquaculture sites, and water treatment plants showcasing both our portable ROV systems and our new product line, the DT340 Pipe Crawler. One project in particular, took place at the Still Creek Dam in Tamaqua, PA. Cody and Sam packed up the crawler and headed down ...


    By Deep Trekker Inc.

  • Dam security and underwater attacks

    According to DHS (2007) dams provide a wide range of important economic, environmental, and social benefits. These benefits include: recreation, flood control, water storage, irrigation, mine tailings, electric generation, debris control, and navigation (see Figure 1; DHS 2007). Their destruction through intentional attack can largely impact the economy and public safety.  Dam security is ...


    By IWA Publishing

  • Long Tan Hydroelectric Dam

    Black & Veatch is the design and construction consultant for the world's largest roller-compacted concrete dam, which will be the world's fourth largest hydropower station and protect 12 million people from flooding. China must create urban infrastructure for the equivalent of the city of Houston, Texas, every month for the next 30 years to accommodate the relocation of 280 million rural ...


    By Black & Veatch Corporation

  • The Basics of Slope Stability Analysis for Geosynthetics

    Slope stability analysis is vital to preventing slope failures in a variety of engineering applications including landfill design, roads, dams and embankments, to name a few. Proper analysis anticipates both natural and manmade slopes and failure of foundations and retaining walls. This blog covers the necessity of slope stability analysis, how to conduct the analysis and the role of ...


    By Agru America, Inc.

  • Measurements of Strength Parameters of Concrete-Rock Contact at the Dam-Foundation Interface

    A long-term dam safety program has been initiated by Ontario Hydro to evaluate the safety of existing dams. Most of the dams in operation were constructed between 1910 and 1975. The larger dams are often of the concrete gravity type founded on rock.As an integral part of this program, laboratory methods for the measurement of the complete strength envelope of bonded concrete-rock contact and ...


    By ASTM International

  • 2000 IFAI award mud lake dam liner cover, Gardnerville, Nevada

    Situated at the base of the United States' picturesque Sierra Nevada range, the reser-voir at Mud Lake Dam, Gardnerville, Nev., was built using horse-drawn scrapers and steam shovels more than 100 years ago as an earthen dam. No longer meeting the safety standards established by the Dam Safety agency of the State of Nevada, re-habilitation was deemed necessary, A cost-effective alternative to the ...


    By Presto Geosystems

  • Tailings Dams: Risk of Dangerous Occurences - Lessons learnt from practical experiences

    This bulletin analyses the causes of 221 tailings dams accidents and failures, and offers examples of effective remedial measures. Knowledge about the factors that control the behaviour of tailings dams has improved greatly during the past 20 years as have the consequences and public perception of tailings dam failures, causing managers and owners to become more aware of the risks involved in the ...


  • SVFlux and SVSlope in UTSA Senior Project - Bell County Earthen Dam

    General This article presents a recent project performed by undergraduate students at The University of Texas at San Antonio. Their project is the culmination their degrees in a capstone class. The objective of the class was to present an opportunity to apply design skills to execution of an open-ended integrated civil engineering design project, including field and laboratory ...


    By SoilVision Systems Ltd.

  • A new formula based on computational fluid dynamics for estimating maximum depth of scour by jets from overflow dams

    The prediction of the maximum depth of the scour hole formed downstream of overflow dams is critical in determining the safety of hydraulic structures. Most of the conventional formulae are not able to consider complex hydraulic and morphologic conditions. A new formula for estimating the maximum depth of the scour hole based on computational fluid dynamics (CFD), which can be used to simulate ...


    By IWA Publishing

  • DAM GOOD ROVS - The inspection and maintenance of vital resource facilities is an integral part of any regions health and stability management program

    Providing consistent output while driving down inspection and maintenance costs is a key activity for those involved in the provision of such services, and requires the monitoring and assessment of relevant new technologies and techniques. The use of divers in the inspection and maintenance of hydro dam facilities is a practice that will remain central to the effective running of these ...


    By AC-CESS Co Uk Ltd

  • Assessing seepage flow conditions through a dam quickly and accurately without drilling or drawing down the reservoir

    This paper examines the application of a proven geophysical technology that is highly effective in assessing seepage flow conditions through, beneath and around earthen embankments. The technology works rapidly with minimal disruptions to dam operations—it requires no drilling or draining of the reservoir. It has become a competitive solution to many of the complex challenges faced with dam ...


    By Willowstick Technologies LLC

  • Safety and hazards in CCS projects

    Carbon capture and storage is now on the technological tipping point – it has reached critical mass with one large-scale, fully integrated power project now almost operational at the SaskPower Boundary Dam project in Canada, using enhanced oil recovery. In the UK, following the announcements of progress at two projects, Peterhead and White Rose, the government’s competition process ...


    By Energy Institute (EI)

  • Reviewing Near-Miss Safety Incidents Throughout the Hydro Industry

    Bruce Meaker answered a series of questions written by marcus evans before the forthcoming 2nd Annual Hydro Plant Maintenance & Reliability Conference, June 5-7, 2012 in Seattle, WA. All responses represent the view of Mr. Meaker and not necessarily those of Snohomish County Public Utility District. Can you explain the ...


    By Marcus Evans

  • Feasibility study & master plan for water supply reservoir

    Client: North Central Missouri Regional Water Commission   Completion Date: 2003  Project Summary  Burns & McDonnell completed the feasibility study and master plan for a new water supply reservoir in Sullivan County, Mo. Sullivan County and other surrounding counties experienced severe drought conditions for several years and existing water ...


    By Burns & McDonnell

  • Closures of mine a new challenge for Romania

    AbstractThe mining activity is one of the oldest activity in Romania, dating from the year 100 B.C. The gold and silver ores represented one of the riches of our country. In time the economic content of metals diminuend, and the ore mines become non profitable. Due to this situation the best option of the State was the closure and ecological rehabilitation of the mines.The steps for the ...


  • Time lapse resistivity/IP survey case study

    Changes in underground electric resistivity is typically resulted by the variations in groundwater conduction and soil water content. Monitoring this variation will help operator gain a better understanding of the underground water distribution over time.  This may facilitates operators monitor abnormal underground or structural behaviour. Time lapse resistivity survey is ...

  • Obama provides economic stimulus money for important water projects

    California and indeed the entire western region of the United States, face chronic issues with respect to water use management. As reported in a December 2008 article on this site, California faces special problems intensified by cycles of drought; additionally, budget shortfalls are compounding the problems by limiting what the State can accomplish. Some relief may be in sight, though; in April ...


    By H2bid, Inc.

  • Lake supply & treatment expansion

    Client: City of Fort Smith Completion Date: 2003 - Design2006 - Lake construction2008 - Plant construction Services Provided Supply reservoir enlargement 30 million-gallon-per-day (MGD) water plant renovation New 20-MGD dual train water plant addition Pulsating clarifiers ...


    By Burns & McDonnell

  • Water system master plan

    Client: City of Fort Smith, Ark. Completion Date: 2002 Services Provided Water supply/delivery Hydraulic modeling and design Water quality analyses Water supply hydrology Flood hydrology 3-D project rendering Physical hydraulic models Spillway hydraulics ...


    By Burns & McDonnell

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