Innovative Techniques of using Marginal Lands for Civil Infrastructure Development

利用边际土地建设民用基础设施的创新技术

• 批准号: RGPIN-2016-05337
• 负责人: Sharma, Jitendrapal
• 金额: $ 1.75万
• 依托单位: York University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=679794
• 关键词: Innovative; Techniques; using; Marginal; Lands

Over the next few decades, two-thirds of human population will be concentrated in urban communities. This will require efficient use land, water, and energy, and result in sharp increase in demand for good-quality land for new developments. Consequently, major public infrastructure, such as highways and railroads, will increasingly have to be constructed on marginal lands, such as closed landfills, saturated peat bogs, pockets of soft/loose soil, areas rehabilitated after mine closures, etc. The hundreds of municipal landfills in Canadian urban communities are often not used for high-value redevelopment after their closure. The proposed program will enable the use of waste in these landfills as a foundation material and will provide excellent opportunities to practice sustainable geotechnical engineering by constructing industrial and/or municipal infrastructure on closed landfills, thereby freeing up good-quality land for high-value developments. Canada leads the world in terms of land area covered by peat, much of it in the Northern communities in the form of permafrost. Given the push to develop the resource-rich northern areas and the shifting climatic patterns, it is anticipated that a large chunk of Canada's infrastructure will be constructed over saturated peat since its complete removal and replacement with a competent fill material is not a viable option for linear infrastructure such as highways, railroads and pipelines. The proposed program will result in an improved understanding of the complex behaviour of saturated peat, thereby enabling its safe and efficient use as a foundation material. The proposed program is also of socioeconomic benefit for Canada's Northern communities. Ensuring the safety and long-term serviceability of civil infrastructure in the wake of anthropogenic and climate-change-driven degrading of permafrost is vital for the viability of these communities. Given the current and planned development of Northern communities costing billions of dollars, the proposed program will result in the development of innovative mitigation strategies and new technologies to combat the effect of degrading permafrost on civil infrastructure. The seven graduate students trained in the program will gain specialized skills and experiences in advanced laboratory testing techniques and numerical modelling associated with emerging areas of waste mechanics and cold regions engineering and will be equipped for a career in academic or industrial research in response to the rapidly growing demand for HQP in the academia and the industry. The development of innovative technologies for sustainable utilization of marginal lands also presents commercialization and entrepreneurship opportunities. Overall, the proposed program will enable geotechnical engineers to manage and mitigate risks associated with constructing geotechnical structures over marginal lands.**

在未来几十年里，三分之二的人口将集中在城市社区。这将要求有效利用土地、水和能源，并导致新开发项目对优质土地的需求急剧增加。因此，主要的公共基础设施，例如高速公路和铁路，将越来越多地必须在边缘土地上建造，例如封闭的堆填区、饱和的泥炭沼泽、软/松散的土块、关闭矿井后恢复的地区等。加拿大城市社区的数百个市政垃圾填埋场在关闭后通常不会用于高价值的再开发。拟议的计划将使这些堆填区的废物能够用作地基材料，并将提供极好的机会，通过在封闭的堆填区建造工业和/或市政基础设施来实践可持续的岩土工程，从而腾出优质土地进行高价值的发展。就泥炭覆盖的土地面积而言，加拿大在世界上处于领先地位，其中大部分以永久冻土的形式存在于北部社区。考虑到开发资源丰富的北部地区和不断变化的气候模式，预计加拿大的一大部分基础设施将在饱和泥炭上建造，因为对高速公路、铁路和管道等线性基础设施来说，用合格的填充物完全清除和替换泥炭是不可行的选择。拟议的计划将使人们更好地了解饱和泥炭的复杂行为，从而使其能够安全有效地用作基础材料。该计划对加拿大北部社区也有社会经济效益。在人为和气候变化驱动的永久冻土退化之后，确保民用基础设施的安全和长期可用性对这些社区的生存能力至关重要。鉴于目前和计划中的北方社区开发耗资数十亿美元，拟议的方案将导致创新的缓解战略和新技术的发展，以应对永久冻土退化对民用基础设施的影响。在该项目中接受培训的七名研究生将获得与废物力学和寒区工程等新兴领域相关的先进实验室测试技术和数值建模的专业技能和经验，并将为学术或工业研究的职业生涯做好准备，以应对学术界和工业界对HQP快速增长的需求。开发可持续利用边际土地的创新技术也提供了商业化和创业的机会。总的来说，拟议的计划将使岩土工程师能够管理和减轻与在边缘土地上建造岩土结构相关的风险