Material Behavior and Its Impact on Northern Development

物质行为及其对北方发展的影响

• 批准号: 1205-2013
• 负责人: Sego, David
• 金额: $ 2.55万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=568177
• 关键词: Material; Behavior; Its; Impact; Northern

The research focuses on improving the waste disposal practice in Northern Regions of Canada. In addition, ongoing research to improve our understanding of the frost heave process and water movement through the frozen fringe is planned. Research is also proposed to develop an enhanced type of composite tailings (CT) to lower reclamation costs for the oil sands industry. The research on improving mine waste disposal will study how to place sulfide rich mine tailings in the Arctic to eliminate future concerns with Acid Mine Drainage. Studies on the use of "Freeze control" placement of the tailings will be carried out. "Freeze control" placement is a strategy of placing the mine waste in layers and allowing it to freeze during the winter. Freezing locks the water into the ice and this has the potential to eliminate it from contact with the sulfide minerals. Water and oxygen must be both present during the oxidation process to form acidic water known as acid mine drainage. Once placement of the tailings is complete they will be covered with waste rock to minimize or eliminate thaw during the summer or as a result of climate induced warming. The applicant is applying for research funds to study development of shale enhanced Consolidate/Composite Tailings (CT) that will allow for more rapid reclamation of the deposit and has the potential to sequester a substantial mass of salt in the final waste deposit. The clay shale has the ability to absorb water and when it is mixed with mature fine tails from the oil sands mines it forms a low strength clay that has an extremely small ability to transmit water. These characteristics will be combined to form this enhanced CT. Research on the behavior of freezing soils will be undertaken to improve the professions understanding of the fundamentals of frost heave and the soil properties that control its magnitude

这项研究的重点是改善加拿大北部地区的垃圾处理做法。此外，正在计划进行研究，以提高我们对冻胀过程和水通过冻结边缘的运动的理解。还建议研究开发一种强化类型的复合尾矿(CT)，以降低油砂行业的回收成本。 关于改善矿山废物处理的研究将研究如何在北极放置富硫化物尾矿，以消除未来对酸性矿山废水的担忧。将开展对尾矿进行“冷冻控制”放置的研究。“冻结控制”安置是一种将矿山废料层层放置并允许其在冬季冻结的策略。冷冻将水锁入冰中，这有可能使其不与硫化物矿物接触。在氧化过程中，水和氧气必须同时存在，才能形成酸性水，即所谓的酸性矿山废水。 一旦尾矿放置完成，它们将被废石覆盖，以最大限度地减少或消除夏季或气候导致的变暖导致的融化。 申请者正在申请研究基金，以研究页岩强化开发 固结/复合尾矿(CT)，这将允许更快地回收矿藏，并有可能将大量盐隔离在最终的废物矿藏中。粘土页岩具有吸水的能力，当它与来自油砂矿的成熟细尾混合时，就形成了一种低强度的粘土，其输送水分的能力极小。这些特征将结合在一起形成这个增强的CT。 将对冻土的行为进行研究，以提高专业人员对冻胀的基本原理和控制其大小的土壤特性的了解。