Williams R.G.S.,Abriox Ltd |
Woodland K.P.,SMEC Australia
Annual Conference of the Australasian Corrosion Association 2013: Corrosion and Prevention 2013 | Year: 2013
UK onshore gas, oil and petrochemical pipeline infrastructure transports gaseous and liquid hydrocarbons via a network of transmission and distribution pipelines at high and intermediate pressures. These pipelines are protected from corrosion by impressed current Cathodic Protection systems. In the past 5 years, UK utilities have installed monitoring systems to gather CP data remotely. Such projects have demonstrated an attractive return on investment compared with the manual methods of collecting CP data that had existed previously. However, they have also been able to demonstrate significant operational gains in terms of improved asset integrity management through early identification of potential corrosion issues as well as reducing risk to the workforce, contributing to environmental KPIs and achieving better regulatory compliance. Copyright © 2013 by the Australasian Corrosion Association.
Deible J.,00 Penn Center Boulevard Inc. |
Rizzo P.C.,00 Penn Center Boulevard Inc. |
Herweynen R.,Hydro Tasmania |
Stratford C.,SMEC Australia
International Water Power and Dam Construction | Year: 2010
Wyaralong dam site is located in south-east Queensland, Australia, near the township of Beaudesert. The project is part of the south-east Queensland water grid, providing water supply for this region of Australia. When completed, the dam will have the capacity to store approximately 103,000 ML of water. The Wyaralong Dam Project is being delivered as an Alliance, where the Client, Designer and Contractor work together in a contractual arrangement which shares the risks and the rewards associated with delivering the project. Wyaralong Dam is a 47m high, 490m long, roller compacted concrete (RCC) dam, with a centrally located ungated primary spillway and a secondary spillway on the left abutment. The initial geotechnical investigation was carried out in 2006/07 and in the first half of 2009. This investigation consisted of boreholes across the damsite and two dozer trenches were excavated, one on each abutment of the dam.
Qian Z.G.,Deakin University |
Li A.J.,Deakin University |
Merifield R.S.,SMEC Australia |
Lyamin A.V.,University of Newcastle
International Journal of Geomechanics | Year: 2015
Stability charts for soil slopes, first produced in the first half of the twentieth century, continue to be used extensively as design tools, and draw the attention of many investigators. This paper uses finite-element upper and lower bound limit analysis to assess the short-term stability of slopes in which the slopematerial and subgrade foundation material have two distinctly different undrained strengths. The stability charts are proposed, and the exact theoretical solutions are bracketed to within 4.2% or better. In addition, results from the limit-equilibrium method (LEM) have been used for comparison. Differences of up to 20% were found between the numerical limit analysis and LEM solutions. It also shown that the LEM sometimes leads to errors, although it is widely used in practice for slope stability assessments. © 2014 American Society of Civil Engineers.
Kidd P.,SMEC Australia
Australian Geomechanics Journal | Year: 2011
The City of Gold Coast has a population of over 520,000 people and an area of 1400 square kilometres. The city has variable geology and geomorphology which includes significant amounts of sloping terrain. The project involved a review, revaluation and update of the city wide unstable soils and slope instability susceptibility zoning system and the detailed assessment of the existing planning scheme relating to the development on sloping sites of a medium or higher susceptibility of slope instability. The zoning was based on geology, landforms, climate and history of the project area using a GIS platform. The project incorporated current best practice guidelines for the assessment of slope instability risk and also included updating city wide susceptibility mapping showing numerous landslips that have occurred or been mapped since the original zoning was undertaken in 1999 by SMEC.
Elakanda S.,Ministry of Irrigation and Water Resources Management |
Nanseer M.,SRI International |
Milton D.,SRI International |
Yamagata K.,DHI |
Deen A.,SMEC Australia
Hydrology and Water Resources Symposium 2014, HWRS 2014 - Conference Proceedings | Year: 2014
Sri Lanka has a history of over two thousand years of dam construction and irrigation development with a complex network of canals and storages servicing the dry zone of the country. The Government of Sri Lanka (GoSL) has been progressing with a massive program of infrastructure development to enable these dry zone systems to provide reliable irrigation water supplies for cropping twice a year by large scale inter?basin transfers in addition to maximising hydropower generation, ensuring safe and adequate drinking water supplies and maintaining environmental values. SMEC was engaged to assist GoSL with planning and modelling of the existing and proposed future systems. The primary source of the water is the Mahaweli Ganga which is the island's largest river system. The overall water resource system planning model was constructed on the MIKE Basin platform using ArcGIS as the geographical framework. It included over thirty major reservoirs, covered over half the entire country and involved regulation of water of about 7,500 GL. Detailed system operational data, including irrigation water deliveries, reservoir water level, rainfall and river flow information was used to calibrate and verify the system model. Separately a substantial knowledgebase involving food production, detailed economic analysis, pricing, power generation, employment creation, re?settlement and social equity considerations was also developed. The water resources model was then coupled to the knowledge base through a decision support system to enable the rapid assessment of development options and their related impacts economically and socially in addition to overall costs. This paper describes the innovative approaches used in first developing the model and then calibrating and verifying it in a data poor region. The paper then progresses to the application of this sophisticated instrument to option development through the decision support system and multi criteria analysis.