Critical issues for improved mine wastes disposal: Investigation of self-weight consolidation, accelerated drainage, strength gain under unsaturated conditions, and stability of engineering works

采矿业是加拿大重要的投资来源，为高技能人才创造了大量有趣的工作岗位。地雷也可能引起关切，特别是考虑到正在产生大量废物。开发和实施安全管理和储存这些废物的有效方法是该行业面临的一项重大挑战。对于具有非常高的初始水含量的细粒尾矿和处理污泥，情况尤其如此。在这种情况下，沉积过程中的排水和固结问题是分析和设计处置设施的关键方面。在矿场管理废石也会带来困难。这项研究计划将解决一些最关键的问题，为硬岩矿山，包括：评估自重固结行为的细粒矿山废物，手段，以加速排水和消散多余的孔隙水压力，去饱和对矿山废物的抗剪强度的影响，以及替代处置方法，以改善尾矿库和废石堆的水文地质响应。

The mining industry is an important source of investment in Canada and it creates a large number of interesting jobs for highly skilled personnel. Mines can also be a source of concerns, particularly when considering the large quantities of wastes being produced. The development and implementation of effective methods for safely managing and storing these wastes represent a major challenge for the industry. This is notably the case for fine-grained tailings and treatment sludge having very high initial water contents. In such cases, drainage and consolidation issues during deposition are key aspects for the analysis and design of the disposal facilities. Managing waste rocks on mine site can also raise difficulties. This research program will address some of the most critical issues for hard rock mines, including: assessing self-weight consolidation behaviour of fine-grained mine wastes, means to accelerate drainage and dissipation of excess porewater pressures, the effect of desaturation on the shear strength of mine wastes, and alternative disposal methods to improve the hydro-geotechnical response of tailings impoundments and waste rocks piles.