Assessing the Performance of Surface and Subsurface Engineered Barriers

评估地表和地下工程屏障的性能

• 批准号: 0243338
• 负责人: Anne Linn
• 金额: $ 7.5万
• 依托单位: National Academy of Sciences
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0243338&HistoricalAwards=false
• 关键词: Assessing; Performance; Surface; Subsurface; Engineered

This action provides partial support for the study by the National Research Council "Assessing the Performance of Surface and Subsurface Engineered Barriers." These systems are relied upon to retain fluids in heap leach treatment in mining, to ensure safe disposal of a variety of waste, to complement remediation programs for contaminated sites, and for other applications. Recent advances in technology and understanding, as well as assessment of past barrier performance, provide an opportunity to improve upon current design, evaluation, and monitoring methods.Surface and subsurface containment systems include caps, bottom liners, and vertical barriers constructed with a variety of materials, e.g., concrete, geomembranes, compacted clays. This study will develop and describe an improved framework for assessing surface and subsurface engineered barriers. In 1997, the National Research Council completed a workshop report, "Barrier Technologies for Environmental Management" (NRC, 1997). The workshop discussions focused on several themes. The current study will build on some of these themes and will provide an improved components-based framework for assessing engineered barriers. It will be conducted by an ad hoc committee under the aegis of the Committee on Geological and Geotechnical Engineering, a standing committee under the Board on Earth Sciences and Resources. The ad hoc committee will consist of approximately 10 professionals with expertise in areas such as municipal/hazardous/radioactive waste containment; hydrogeology; environmental engineering; mining; geochemistry; geotechnical/geological engineering; instrumentation/sensor technology; geology; risk assessment; and environmental regulation.The ad hoc panel will consider the performance and effective lifetimes of current and emerging types of engineered barriers and will summarize the state of science and engineering for risk assessment methodology, system installation, performance monitoring, and sustainability. In addition, the study will identify data gaps and research needs. This study will benefit operators and regulators by defining the key components of design and implementation that define barrier performance effective lifetimes, thereby helping to ensure protection of public health, reduce potential risks for barrier failure, maximize reliability of systems, and minimize overall costs. In addition, the study's assessment of data gaps will help to focus research programs on efforts that will most directly result in improved performance. The study report will be available for public distribution in accordance with NRC policy, and will also be posted on the NAS World Wide Web site.

这项行动为国家研究理事会的研究“评估表面和地下工程屏障的性能”提供了部分支持。“这些系统被用来在采矿的堆浸处理中保留流体，以确保安全处理各种废物，补充污染场地的修复计划，以及其他应用。 技术和认识方面的最新进展，以及对过去屏障性能的评估，为改进目前的设计、评估和监测方法提供了机会。表面和地下安全壳系统包括用各种材料建造的盖、底部衬里和垂直屏障，例如，混凝土、土工膜、压实粘土。 这项研究将制定和描述一个改进的框架，用于评估表面和地下工程屏障。 1997年，国家研究理事会完成了一份讲习班报告，题为“环境管理的屏障技术”（NRC，1997）。 讲习班的讨论侧重于几个主题。 目前的研究将建立在其中一些主题，并将提供一个改进的组件为基础的框架，评估工程障碍。 它将由地质和岩土工程委员会主持下的一个特设委员会进行，该委员会是地球科学和资源委员会下的一个常设委员会。 特设委员会将由大约10名专业人员组成，他们在以下领域具有专门知识：城市/危险/放射性废物控制;水文地质学;环境工程;采矿;地球化学;岩土工程/地质工程;仪器/传感器技术;地质学;风险评估;特设小组将审议当前和新出现的工程屏障类型的性能和有效寿命，并将总结风险评估方法、系统安装、性能监控和可持续性的科学和工程现状。 此外，该研究将查明数据差距和研究需求。 这项研究将有利于运营商和监管机构，通过定义设计和实施的关键组成部分，定义屏障性能的有效寿命，从而有助于确保保护公众健康，减少屏障故障的潜在风险，最大限度地提高系统的可靠性，并最大限度地降低总成本。 此外，该研究对数据差距的评估将有助于将研究计划集中在最直接导致绩效提高的努力上。研究报告将按照核管制委员会的政策公开分发，并将张贴在NAS的万维网网站上。