The hydro-mechanical stability of soil

土体水力学稳定性

• 批准号: RGPIN-2014-03607
• 负责人: Fannin, Robin
• 金额: $ 1.6万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=565976
• 关键词: hydro; mechanical; stability; soil; hydro; mechanical; stability; soil

Canada relies on hydroelectricity as source of clean and renewable energy. Canadian engineers are world-leaders in the innovative design, construction and performance monitoring of hydroelectric dams. Our competitive-edge is based on understanding the “health” of existing dams, and use of that knowledge to inform decisions on dam safety and risk management. Knowledge-transfer from long-term stewardship of critical dam infrastructure also informs best-practices for tailings impoundments in the mining sector and flood protection works in the municipal sector. The WAC Bennett Dam near Fort St. John, British Columbia, was the largest embankment dam in the world when constructed nearly 50 years ago. It has an estimated net-worth of five billion dollars. The proposed research investigation arises from a major sinkhole incident at the Bennett dam in 1996. The research involves laboratory testing and companion fieldwork. The laboratory investigation will advance our understanding of hydro-mechanical influences on seepage-induced internal erosion in soil, yield a database of soil behaviour to guide the development of improved engineering practices, and verify the potential of two promising methods for “health” monitoring of earth dams. A companion field investigation at the site of the Coursier dam near Revelstoke in British Columbia, which experienced a number of sinkhole incidents and was decommissioned in 2003, will yield invaluable soil samples for testing as a part of the laboratory investigation. The anticipated outcomes of the work are (i) advances in a science-based understanding of seepage-induced erosion in earth dams, and (ii) innovative methods for its detection that will inform national and international guidelines on dam safety and risk management.

加拿大依靠水电作为清洁和可再生能源的来源。加拿大工程师是水力发电大坝创新，建筑和性能监测的世界领导者。我们的竞争性边缘是基于理解现有大坝的“健康”，并使用该知识来为大坝安全和风险管理的决定提供信息。从重要的大坝基础设施的长期管理中的知识转移也为市政部门的采矿部门和防洪工程的尾矿蓄水系统提供了最佳实践。不列颠哥伦比亚省圣约翰堡附近的Wac Bennett大坝是大约50年前建造的世界上最大的路堤大坝。它的净价值为50亿美元。拟议的研究投资是由1996年贝内特大坝发生的一次重大污水坑造成的。该研究涉及实验室测试和伴侣实地调查。实验室研究将提高我们对水力机械影响对土壤中内部侵蚀的影响，产生土壤行为的数据库，以指导改进的工程实践的发展，并验证两种对地球坝的“健康”监测的潜在方法。在不列颠哥伦比亚省雷夫尔斯托克附近的Coursier大坝现场进行的同伴现场调查经历了许多污水坑事件，并于2003年退役，将产生宝贵的土壤样本，作为实验室调查的一部分。这项工作的预期结果是（i）基于科学对渗水引起的地球大坝侵蚀的理解的进步，以及（ii）其检测的创新方法，该方法将为大坝安全和风险管理的国家和国际指南提供信息。