seepage modeling Articles

  • Sensitivity of unlined canal seepage to hydraulic properties of polyacrylamide-treated soil

    High-molecular-weight, anionic, linear polyacrylamide (PAM) is being evaluated as a means of sealing unlined water delivery canals to reduce seepage losses. In this study, we investigated water seepage loss reduction by using a two-layer one-dimensional steady-state conceptual model. The objectives of this study were twofold: (i) to examine the effectiveness and implications of a PAM-treated thin ...

  • 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

  • Open Pit Modeling

    The Problem Open pits are a common method of mining in the world. The design of such pits requires the application of technologies from a number of fields. One of the common scenarios is that the bottom of the pit may possibly extend beneath the water table of the surrounding geo-strata. If this is the case then a suitable set of pumping wells must be designed in order to ensure that ...


    By SoilVision Systems Ltd.

  • White paper on Willowstick technology used for mapping and modeling groundwater systems

    1.0 Introduction Willowstick Technology (the “Technology”) delineates and characterizes subsurface aqueous systems in complex hydrogeologic settings. It has consistently proven valuable in: 1) the diagnosis of seepage through earthen dams and levees; 2) characterizing groundwater infiltration into surface and subsurface mines; 3) tracking pollution plumes influenced by ...


    By Willowstick Technologies LLC

  • A refined groundwater flow model of the shallow aquifer in Tianjin Municipality, China

    The assembly of a groundwater flow model for the shallow aquifer in Tianjin Municipality is outlined in this paper. Tianjin Municipality was selected because of its complicated hydrogeological conditions and rich data, which could be used to test a refined groundwater flow model for the shallow aquifer. When a shallow groundwater flow model is being assembled its recharge and discharge ...


    By IWA Publishing

  • Numerical modelling of the environmental impact of landfill leachate leakage on groundwater quality – a field application

    Waste disposal facilities are mainly responsible for the gradual quality degradation of subsurface freshwater reservoirs. The main objective of this work is to identify the groundwater contamination risk due to potential leachate leakage and seepage beneath the municipal landfill of the City of Patras in Greece. A groundwater and leachate mass transport model of the underlying aquifer was ...


    By Springer

  • Diphasic transfer of oxygen in vertical flow filters: a modelling approach

    Oxygen renewal, as a prominent phenomenon for aerobic bacterial activity, deeply impacts vertical flow constructed wetland (VFCW) treatment efficiency. The authors introduce a multiphase model able to simulate oxygen transfer in VFCWs. It is based on a two-phase flow module, and a transport module. The transport module is able to deal with convection/diffusion phenomena, inter-phase (air–water) ...


    By IWA Publishing

  • Modeling Intrinsic Remediation With Multiple Electron Acceptors: Results From Seven Sites

    Recent results from the Air Force Center for Environmental Excellence's (AFCEE) Natural Attenuation Initiative indicate that anaerobic processes dominate the biodegradation of dissolved petroleum hydrocarbons during intrinsic remediation (natural attenuation) of contaminated aquifers. In particular, sulfate reduction and methanogenesis appear to be the major sinks for BTEX compounds at seven ...


  • Use of Mathematical Models to Evaluate Management Options for Reducing PCB Bioaccumulation by Fish in Two Streams at the Neal`s Landfill Site, Bloomington, IN

    ABSTRACTNeal’s Landfill received PCB-containing wastes that originated from a Westinghouse Plant in Bloomington, IN. PCBs have been transported to the groundwater beneath the site and into two nearby streams: Conard’s Branch and Richland Creek, and consequently, PCBs have impacted the water, sediments, and fish of these streams. Remedial actions conducted at the site have included removal of ...

  • Gas flow control method of recycling gas drilling technology

    Recycling gas drilling is a new drilling technology. The paper based on the theory of gas transient flow, a set of theoretic models of gas flow control at the export of annulus are set up in combinations of the principles of the seepage flow mechanics and the characteristics of recycling gas drilling technique. According to the basic laws which the flowing gas should comply with, the properties ...


    By Inderscience Publishers

  • Business development

    One of the primary advantages of the SVOffice geotechnical software suite is that it allows consulting firms to develop new areas of business and revenue streams. This aspect of the software has been demonstrated by Golder Associates Africa. The Midrand office approached SoilVision Systems Ltd. about one and a half years ago with the desire to increase their numerical modeling capabilities. In ...


    By SoilVision Systems Ltd.

  • Quantitative assessment of the impacts of irrigation on surface water fluxes in the Tarim River, China

    Irrigation is a significant human activity that affects surface water fluxes in the Tarim River Basin. To quantitatively assess the irrigation impact of this activity on surface water fluxes in the Tarim River, a land surface hydrologic model was coupled with a modified irrigation scheme and a reservoir module and applied to simulate these fluxes. Modeling results indicate that the combined ...


    By IWA Publishing

  • 3D Levee intersection analysis

    Levee analysis is becoming an increasingly important topic as the infrastructure ages. Many sections are in need of re-engineering improvements as consideration is given to their replacement. Concepts utilized in their original design are being re-examined. Many of these structures were designed 20 to 50 years ago, and the tools utilized in such analysis have changed significantly. Our ...


    By SoilVision Systems Ltd.

  • 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.

  • Solving tailings impoundment water balance problems

    This application of SVFlux involved the calculation of a water balance for a tailings facility close to Queensland, Australia. Flow past the earth dams had been measured in the field and the desire was to see if a numerical model could accurately predict the flow in a blind test. The climate in the area is semi-arid with an annual rainfall of 702 mm/yr and a potential evaporation rate of 1650 ...


    By SoilVision Systems Ltd.

  • Natural Gas Compressor

    Reciprocating engines come in all sizes, from a tiny, 10cc piston engine that powers a model airplane, to the massive Wartsila RTA 96-C, with each of its 14 cylinders displacing 1,820,000 cc. While our borescopes won’t be much help on the model airplane engine, if you work on any medium or large size reciprocating engine, the chances are good that we have a video borescope that can make ...


    By RF System Lab.

  • A cost-effective method to protect the coastal regions from sea level rise. A case study: northern coasts of Egypt

    Sea level rise resulting from climate change represents one of the major challenges for coastal regions, e.g., coastal erosion, submergence of shore cities and saltwater intrusion. This study presents a feasibility study of using a diaphragm wall (DW) to protect the northern coasts of Egypt from sea level rise. The study includes assessment of environmental and socio-economic impacts of the ...


    By IWA Publishing

  • Decision Support Software for Designing Monitoring Plans

    Abstract: The Monitoring and Remediation Optimization System (MAROS) software has been developed by the Tech Transfer Division of the Air Force Center for Environmental Excellence (AFCEE) to provide site managers a strategy for formulating appropriate long-term groundwater monitoring programs that can be implemented at lower costs. The MAROS software optimizes a site-specific monitoring program ...


  • Response in the trophic state of stratified lakes to changes in hydrology and water level: potential effects of climate change

    To determine how climate-induced changes in hydrology and water level may affect the trophic state (productivity) of stratified lakes, two relatively pristine dimictic temperate lakes in Wisconsin, USA, were examined. Both are closed-basin lakes that experience changes in water level and degradation in water quality during periods of high water. One, a seepage lake with no inlets or outlets, has ...


    By IWA Publishing

  • Converting rain into drinking water: quality issues and technological advances

    With growing pressures on water supplies worldwide, rainwater harvesting is increasingly seen as a viable option to provide drinking water to an ever expanding population, particularly in developing countries. However, rooftop runoff is not without quality issues. Microbiological and chemical contamination have been detected in several studies, well above local and international guidelines, ...


    By IWA Publishing

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