Fibre Optic Tools to support Distributed Fibre Optic Sensing of Groundwater Flow in Boreholes

支持钻孔地下水流分布式光纤传感的光纤工具

• 批准号: 458836-2014
• 负责人: Parker, Beth
• 金额: $ 4.69万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=542059
• 关键词: Fibre; Optic; Tools; support; Distributed

Distributed fibre optic sensing is an exciting new technique for characterizing groundwater flow, and its true potential has only recently been identified. Distributed temperature sensing can be used to identify natural groundwater flow in boreholes, and distributed acoustic sensing can be used for seismic surveying to help identify structures within the bedrock aquifer. Together these datasets are incredibly powerful for characterizing groundwater flow in bedrock environments which is an integral part of predicting contaminant transport and fate which has significant economic and health impacts. Initial research results using these technologies has been tremendously promising and significant investments have been made by our research group to purchase a distributed temperature sensor unit and in drilling a network of boreholes to conduct the research. This sensor and borehole cluster have been critical in advancing the science to date; however, the research group does not own the basic fibre optic tools required to splice fibre optic cables, test the performance and splices in the cables, or various other fibre optic related tasks. Also, initial field trials identified the need for a different type of cable design that the university does not own. As we do not have the required cables or equipment to work with the cables, further research potential is limited and current graduate students are experiencing significant delays. The tools and equipment identified in this proposal would not only allow the research advance, but would supply our research group with the standard tools needed to be fully self-sufficient at working with fibre optic cables.

分布式光纤传感是表征地下水流的一项令人兴奋的新技术，其真正的潜力直到最近才被确定。分布式温度传感可用于识别钻孔中的天然地下水流，分布式声学传感可用于地震勘测，以帮助识别基岩含水层内的结构。这些数据集在描述基岩环境中的地下水流方面非常强大，这是预测污染物迁移和归宿的一个组成部分，具有重大的经济和健康影响。 使用这些技术的初步研究结果非常有前途，我们的研究小组已经进行了大量投资，购买了分布式温度传感器单元，并钻了一个钻孔网络来进行研究。 迄今为止，这种传感器和钻孔集群在推进科学方面至关重要;然而，研究小组并不拥有拼接光纤电缆、测试电缆性能和拼接或各种其他光纤相关任务所需的基本光纤工具。 此外，最初的现场试验确定了需要一种不同类型的电缆设计，大学不拥有。 由于我们没有所需的电缆或设备与电缆一起工作，进一步的研究潜力是有限的，目前的研究生正在经历重大延误。 本提案中确定的工具和设备不仅可以促进研究，还可以为我们的研究小组提供在使用光纤电缆时完全自给自足所需的标准工具。