Thermal Imaging System for Multi-spatial and Multi-temporal Geoscience Investigations

多时空地球科学调查热成像系统

• 批准号: 439260-2013
• 负责人: Allen, Diana
• 金额: $ 8.02万
• 依托单位: Simon Fraser University
• 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: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=507542
• 关键词: Thermal; Imaging; System; Multi; spatial

Geological processes, such as sedimentary basin evolution, ore and hydrocarbon deposition, and volcanism and tectonism are inextricably linked to fluid flow processes. To understand the role of fluids in geological processes, we need to consider how fluid flow may be coupled to other processes, such as heat transfer and mechanical deformation. Thermal infrared (TIR) imaging of geological media (rock, soils, etc.) can enable the discrimination of low temperature contrasts between the fluid and the media through which it flows, while differences in surface emissivity can be used to characterise zones of alteration. The recent development of more portable and capable high resolution TIR video systems now permits accurate measurement of alteration, fracture networks and fluid in rock masses, making it possible to fully apply geomechanical and geochemical modelling to examine the temperature-dependent physicochemical processes of fluid flow. However, to date, there has been no comprehensive multi-spatial and multi-temporal study of multi-phase fluid flow through fractured geological media. The thermal images collected with this instrument will be draped on LIDAR/photogrammetric models along with the results of 3D ground deformation models. Eventually, in association with industry, we hope to develop the ability to fuse the thermal image data (in a similar manner to photogrammetry) to provide true 3D thermal models. Using the TIR video capability, the temporal progression of multi-phase fluid flow can be measured, and when integrated with multiple geophysical, geochemical and geomechanical datasets, produce comprehensive 4D models of the physicochemical fluid history. The TIR imaging system requested here will be employed immediately in a novel collaborative project to investigate the processes controlling multi-phase fluid (gas and liquid) flow through fractured geological media. We will explore the multi-temporal and multi-spatial characterization of seepage from fractures in natural (e.g. hydrological, geothermal) and engineered (e.g. soil and rock slopes, underground excavations) environments.

地质过程，例如沉积盆地的演化，矿石和碳氢化合物的沉积，火山和构造与流体流动过程密不可分。要了解流体在地质过程中的作用，我们需要考虑如何将流体流与其他过程（例如传热和机械变形）耦合。地质介质（岩石，土壤等）的热红外（TIR）成像可以使流体和流动的培养基之间的低温对比度歧视，而表面发射率的差异可用于表征变化的区域。现在，更便携和能力的高分辨率TIR视频系统的最新发展允许对岩石质量的改变，断裂网络和流体进行准确的测量，从而使能够完全应用地质力学和地球化学建模以检查依赖温度的流体流动物理学过程。但是，迄今为止，还没有对通过断裂地质介质的多相流体流进行的多空间和多阶梯研究。使用该仪器收集的热图像将覆盖在激光雷达/摄影模型上，以及3D接地变形模型的结果。最终，与工业相关，我们希望发展能够融合热图像数据（以与摄影测量类似的方式）融合的能力，以提供真正的3D热模型。使用TIR视频能力，可以测量多相流体流的时间进展，并与多个地球物理，地球化学和地球力学数据集集成时，会产生理化流体史的全面4D模型。此处要求的TIR成像系统将立即用于一个新型的协作项目中，以调查控制多相流体（气体和液体）流穿过破裂地质介质的过程。我们将探讨自然（例如水文，地热）和工程（例如土壤和岩石斜坡，地下发掘）环境中裂缝的渗流的多空间和多空间表征。