MRI: Acquisition of a High Pressure and Temperature True Triaxial Testing Equipment with a Multiphase Fluid Flow System

MRI：获得具有多相流体流动系统的高压高温真三轴测试设备

• 批准号: 2017874
• 负责人: Kam Ng
• 金额: $ 79.46万
• 依托单位: University of Wyoming
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2017874&HistoricalAwards=false
• 关键词: MRI; Acquisition; Pressure; Temperature; True

The demand for better underground civil infrastructure requires an improved basic understanding of the complex behaviors of man-made or natural materials such as bedrocks. This MRI award supports the acquisition of a true triaxial testing equipment with the capability to simulate high pressure and temperature, three-dimensional stresses, and multiphase fluid flow conditions. Valuable experimental data will be generated to improve our understanding of coupled thermo-hydro-mechanical-chemical-biological (THMCB) interactions of these materials. The scientific knowledge gained will 1) improve the reliability of our civil infrastructure, 2) reduce risks and economic losses during subsurface exploration, 3) ensure a safe and permanent storage for pollutants, and 4) improve extraction of drinking water, hydrocarbons, and alternative energy sources. This project also will train future scientists and engineers as well as broadening the participation of women, underrepresented minorities, and persons with disabilities in STEM fields. Some educational activities will be pursued as part of this project, including the incorporation of equipment testing into existing undergraduate and graduate courses, Wyoming State Science Fair exhibits, and Engineering Summer Program classes. Other activities include establishment of an educational website, an outreach program for Wyoming School Districts, and annual workshops.This project aims to advance our understanding of the fundamental aspects of THMCB processes in solid and porous media. Acquisition of the instrument will provide the unique ability to reproduce most in-situ subsurface conditions or extreme conditions that are unattainable through conventional instruments. The equipment can apply three independent principal stresses, heat multiple pore fluids at the same temperature of a test specimen, and perform coupled process measurements over complex loading trajectories. The project will advance fundamental research on rock mechanics, materials science, geophysics, biological engineering, environmental engineering and sustainability, hydrologic science, transport phenomena, and THMCB processes. The project will 1) reveal the physics behind the complex failure mechanism of materials, 2) quantify three-dimensional material strengths, 3) determine the impact of chemical and biological processes on permeability, 4) develop new numerical techniques to study groundwater flows, 5) improve interpretation of geophysical data, and 6) advance multiphysics computational models for simulating coupled THMCB processes of porous materials. The project will promote regional and national research collaborations from universities, government agencies, research institutions and private companies to tackle critical issues like global warming, energy independence, water resource demands, and natural hazards.This project is jointly funded by CBET-MRI Program and the Established Program to Stimulate Competitive Research (EPSCoR) Program.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

对更好地下民用基础设施的需求需要对人造或天然材料（例如基岩）的复杂行为有了深刻的基本了解。该MRI奖励支持获得真正的三轴测试设备，并具有模拟高压和温度，三维应力和多相流体流动条件的能力。将生成有价值的实验数据，以提高我们对这些材料的耦合热融化机械生物生物生物（THMCB）相互作用的理解。获得的科学知识将获得1）提高我们的民用基础设施的可靠性，2）降低地下探索期间的风险和经济损失，3）确保确保污染物的安全，永久存储； 4）改善饮用水，碳氢化合物和替代性的提取能源。该项目还将培训未来的科学家和工程师，并扩大妇女，代表性不足的少数民族以及残疾人在STEM领域的参与。该项目的一部分将进行一些教育活动，包括将设备测试纳入现有的本科和研究生课程，怀俄明州州科学博览会展览以及工程夏季课程课程。其他活动包括建立一个教育网站，一个针对怀俄明学区的外展计划以及年度研讨会。该项目旨在促进我们对固体和多孔媒体中THMCB流程的基本方面的理解。获取该仪器将提供独特的能力，以复制大多数原地地下条件或通过常规仪器无法实现的极端条件。该设备可以在测试样品的相同温度下施加三种独立的主应力，加热多个孔隙流体，并在复杂的负载轨迹上执行耦合的过程测量。该项目将推进岩石力学，材料科学，地球物理学，生物工程，环境工程和可持续性，水文科学，运输现象和THMCB流程的基础研究。该项目将1）揭示材料复杂故障机理背后的物理学，2）量化三维材料强度，3）确定化学和生物过程对渗透率的影响，4）4）开发了研究地下水流的新数值技术，5 ）改善地球物理数据的解释，以及6）用于模拟多孔材料的THMCB过程的推进多物理计算模型。该项目将促进大学，政府机构，研究机构和私人公司的区域和国家研究合作，以解决全球变暖，能源独立性，水资源需求和自然危害等关键问题。该项目由CBET-MRI计划和CBET-MRI计划和既定的竞争研究计划（EPSCOR）计划。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛影响的评论标准来评估值得支持的。