Improved mechanical models & engineering management strategies for the excavation damage zone (EDZ) in sedimentary rocks around underground nuclear waste repositories

改进的机械模型

• 批准号: 249729-2010
• 负责人: Diederichs, MarkStephen
• 金额: $ 3.79万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=479310
• 关键词: Improved; mechanical; models; engineering; management

Disposal of nuclear waste is a critical engineering challenge. The international consensus is that underground disposal is the only viable option. Canada, a major waste producer, is currently at the concept research stage for a high-level repository contained in sedimentary rocks. The cost of a repository will exceed $20B and success relies on accurate prediction and management of the Excavation Damage Zone (EDZ) around repository tunnels, pillars and shafts. The EDZ is a suite of concentric zones of disturbed, damaged and fractured rock that can provide pathways for radio-nucleides. The long term research goal is to improve understanding of the mechanical damage response and robust solutions for engineering control of the damage zone in sedimentary rock, at an repository scale. The five key (short term) objectives for the next 5 years of DG research are:

核废料的处置是一项关键的工程挑战。国际共识是地下处置是唯一可行的选择。加拿大是一个主要的废物生产国，目前正处于沉积岩高级处置库的概念研究阶段。处置库的成本将超过 $20B，成功取决于对处置库隧道、支柱和竖井周围挖掘损坏区 (EDZ) 的准确预测和管理。 EDZ 是一组受干扰、损坏和破裂的岩石同心区域，可为放射性核提供通道。长期研究目标是提高对机械损伤响应的理解，并在储存库规模内为沉积岩损伤区域的工程控制提供可靠的解决方案。 DG 研究未来 5 年的五个关键（短期）目标是：