Thermo-hydrogeological behaviour of mine waste storage facilities in continuous permafrost regions

连续多年冻土区矿山废弃物储存设施的热水文地质行为

• 批准号: RGPIN-2021-03552
• 负责人: BoulangerMartel, Vincent
• 金额: $ 1.89万
• 依托单位: Université du Québec en Abitibi-Témiscamingue
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=742612
• 关键词: Thermo; hydrogeological; behaviour; mine; waste

There are numerous engineering, environmental, and social acceptability challenges associated with mining projects in the Canadian Arctic. These challenges are especially important when large volumes of solid mine wastes, such as mine tailings and waste rocks, must be stored at the surface. In order to design and develop efficient and cost-effective waste management and reclamation strategies in continuous permafrost regions, it is essential to adequately assess the thermal and hydrogeological behavior of mine waste storage facilities. However, despite having significant impacts on waste management reclamation strategies, the processes governing the thermal and hydrogeological behavior of tailings and waste rocks storage facilities have not yet been fully assessed. The long-term goal of this research program is to better understand the thermal and hydrogeological processes governing the behavior of mine waste storage facilities located in continuous permafrost regions. The first theme of this five-year research program aims to assess the thermo-hydrogeological behavior of tailings storage facilities located in continuous permafrost regions. The main short-term objectives of this research theme are to: (1) assess the in situ thermo-hydrogeological behavior of conventional and filtered tailings storage facilities in continuous permafrost regions, and (2) assess the long-term thermal behavior of tailings storage facilities and its impact on reclamation strategies in continuous permafrost regions. The second theme of this research program aims to assess the thermo-hydrogeological behavior of waste rock storage facilities located in continuous permafrost regions. The main short-term research objectives of the second theme are to: (1) assess water infiltration and storage in frozen waste rocks at the laboratory scale, and (2) assess water movement in frozen waste rocks using numerical modeling. The proposed experimental approaches combine cutting-edge measurement techniques with unique in situ results and original numerical modeling. The results of this study will improve our ability to design high-quality and sustainable reclamation strategies for mine sites located in Arctic regions. In addition, it will help the Canadian mining industry to better manage their mine wastes, reduce their environmental impacts, and protect the fragile ecosystems of the Canadian Arctic. The proposed research plan will involve the training of three undergraduate students, two master's students, and one doctoral student.

加拿大北极地区的采矿项目面临着许多工程、环境和社会可接受性方面的挑战。当大量的固体矿山废物，如尾矿和废石，必须储存在地面时，这些挑战尤其重要。为了在连续多年冻土区设计和开发有效且具有成本效益的废物管理和回收策略，必须充分评估矿山废物储存设施的热和水文地质行为。然而，尽管对废物管理回收战略有重大影响，但尚未充分评估尾矿和废石储存设施的热力和水文地质行为。该研究计划的长期目标是更好地了解位于连续多年冻土区的矿山废物储存设施的热力和水文地质过程。这项为期五年的研究计划的第一个主题旨在评估位于连续多年冻土区的尾矿储存设施的热水文地质行为。该研究主题的主要短期目标是：（1）评估连续多年冻土区常规和过滤尾矿储存设施的原位热水文地质行为，以及（2）评估尾矿储存设施的长期热行为及其对连续多年冻土区复垦策略的影响。本研究计划的第二个主题旨在评估位于连续多年冻土区的废石储存设施的热水文地质行为。第二个主题的主要短期研究目标是：（1）在实验室规模上评估冻结废石中的水渗透和储存，以及（2）使用数值模拟评估冻结废石中的水运动。所提出的实验方法结合了联合收割机先进的测量技术与独特的原位结果和原始的数值模拟。这项研究的结果将提高我们为北极地区的矿区设计高质量和可持续的复垦战略的能力。此外，它还将帮助加拿大采矿业更好地管理其矿山废物，减少其对环境的影响，并保护加拿大北极地区脆弱的生态系统。拟议的研究计划将涉及三名本科生，两名硕士生和一名博士生的培养。