Performance of bituminous geomembrane in mining applications

沥青土工膜在采矿应用中的性能

• 批准号: 505527-2016
• 负责人: Rowe, RKerry
• 金额: $ 0.96万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=663806
• 关键词: Performance; bituminous; geomembrane; mining; applications

Management of mining waste in both a safe and environmentally acceptable manner is essential for continued activity in this important sector of Canada's economy-worth $57B in 2014. A special feature about these mining applications is the considerably high vertical stresses imposed on the geosynthetic liner that can result in puncturing the thin plastic liner and migration of the containment of the harmful chemicals to the surrounding environment. Thicker and yet flexible liners such as Bituminous Geomembranes (BGMs) are often considered to be favourable for such applications and currently used despite a lack of knowledge of their behaviour. A recent research contract by the applicants and industry partner, Titan, initiated a very preliminary investigation into the puncture resistance of BGMs and is expected to be of significant benefit of exploring their physical response under stresses in mining application. Industry also needs to know how well BGMs can resist degradation compared to the traditional polymeric geomembranes and how effective BGM sheets can be welded on site without providing a weak zone between BGM panels to ensure the long-term performance of such liners in reducing subsurface seepage from the mining storage facilities into the surrounding environment. The proposed research will use industrial funding to conduct fundamentally new experiments to assess BGM aging with time and possible change in its properties together with the physical and the chemical response of BGM welds. NSERC funding will be used to: (1) understand the fundamental mechanism by which puncturing occurs or, alternatively, what are the mechanism by which BGM resist leakage in situations where traditional polymeric geomembranes do puncture and leak; (2) explore how best to evaluate the long-term effectiveness of the seams between adjacent panels of BGM; (3) investigate how best to evaluate the service life of a BGMs. The new research will enable more effective and economical environmental protection for mining waste and will provide advanced training for a Masters and a PhD student. .**

在2014年加拿大经济价值$ 57B的这一重要领域的持续活动中，以安全和环境可接受的方式管理采矿废物是至关重要的。有关这些采矿应用的一个特殊功能是对地球合成衬里施加的垂直应力相当高，可以导致刺穿薄塑料衬里和周围环境的易受伤害化学物质的迁移。较厚且灵活的衬里，例如沥青地植物（BGM），通常被认为对此类应用有利，并且尽管缺乏对其行为的了解，但目前使用了。申请人和行业合作伙伴泰坦（Titan）最近的一项研究合同对BGMS的穿刺耐药性进行了非常初步的调查，预计将在采矿应用中探索其身体反应有很大的好处。行业还需要知道与传统的聚合物土工膜相比，BGMS可以如何抵抗降解，以及如何在现场焊接BGM板的有效效果，而无需在BGM面板之间提供弱区，以确保此类衬板在减少地下渗流中的长期性能从采矿存储设施减少周围环境中的地下。拟议的研究将使用工业资金进行根本上新的实验，以随着时间的流逝和可能的变化以及BGM焊缝的物理和化学响应评估BGM老化。 NSERC资金将用于：（1）了解发生刺穿的基本机制，或者，在传统的聚合物地球膜进行穿刺和泄漏的情况下，BGM抵抗泄漏的机制是什么？ （2）探索如何最好地评估BGM相邻面板之间接缝的长期有效性； （3）研究如何最好地评估BGM的使用寿命。这项新的研究将为采矿废物提供更有效和经济的环境保护，并为硕士和博士生提供高级培训。 。**