Optimization of the use of waste rock inclusions in tailings impoundments to improve their short and long-term performance

优化尾矿库中废石夹杂物的使用，以提高其短期和长期性能

• 批准号: 477461-2014
• 负责人: Aubertin, Michel
• 金额: $ 20.18万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618142
• 关键词: Optimization; use; waste; rock; inclusions

The research will focus on an innovative method for the storage tailings and waste rock that results in improved environmental and geotechnical performance and thus reduces major risks associated with mining. The method consists of the co-disposal of tailings and waste rock such that continuous inclusions of stronger, more permeable and more rigid waste rock are placed in tandem with tailings deposition. The inclusions accelerate consolidation, reinforce the impoundment and reduce the quantity of tailings released in the event of a rupture. This technique is currently in use at one mine, the Canadian Malartic Mine, and is being considered at other sites. There remain areas of uncertainty regarding the use of inclusions, including for instance the applicability of analytical and numerical methods of evaluation and design as well as practical considerations such as the amount and effects of tailings infiltration into the inclusions.The primary point of reference for this project will be instrumented waste rock inclusions that are currently being constructed at the Canadian Malartic Mine. The research will consist of a combination of in situ monitoring, laboratory testing, physical modelling, and numerical analysis with the objectives of: 1) Mine waste characterization and behavior; 2) Tailings and waste rock interaction near inclusions; 3) Field monitoring and data analysis; 4) Constitutive modeling and numerical simulations; and 5) Optimization strategy and guidelines for the design of inclusions.The project will have a duration of 4 years and will be supported by 7 industrial partners who will be contributing $120,00 in cash annually as well as a total of $778,000 of in-kind contributions. A total of 25 HQP will be trained over the course of the research.The research will benefit the mining industry and Canada by providing a means to reduce the geoenvironmental risks associated with mine wastes and by keeping Canada at the forefront of mine wastes disposal technology.

该研究将重点介绍一种用于储存尾矿和废岩的创新方法，从而改善了环境和岩土技术的性能，从而降低了与采矿相关的主要风险。该方法由尾矿和废岩的共同分配，使得将更强，更渗透性和更刚性的废岩的连续包裹物列入尾矿沉积。夹杂物加速巩固，加强蓄水池并减少破裂时释放的尾矿数量。目前，该技术正在加拿大马太矿山的一个矿山使用，并在其他地点进行了考虑。在包含物的使用方面仍然存在不确定性的领域，例如，评估和设计的分析和数值方法的适用性以及诸如尾矿渗透到包含物的数量和效果之类的实际考虑。项目将是当前正在加拿大马太矿山建造的废岩包裹物。这项研究将包括原位监测，实验室测试，物理建模和数值分析的组合以及：1）矿山废物表征和行为； 2）附近的尾矿和废岩相互作用； 3）现场监控和数据分析； 4）组成型建模和数值模拟； 5）针对包装设计的优化策略和准则。该项目的期限为4年，并将得到7个工业合作伙伴的支持，他们每年将捐款120,00美元，总计778,000美元善良的贡献。在整个研究过程中，总共将对25个HQP进行培训。该研究将通过提供一种减少与矿山废物相关的地理环境风险并将加拿大保持在矿山废物处理技术的最前沿，从而使采矿业和加拿大受益。