Effect of Stress on Transport Properties of Rock

应力对岩石输运特性的影响

• 批准号: 9805072
• 负责人: Teng-fong Wong
• 金额: $ 20万
• 依托单位: SUNY at Stony Brook
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-10-01 至 2002-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9805072&HistoricalAwards=false
• 关键词: Effect; Stress; Transport; Properties; Rock

9805072WongFluid exerts significant mechanical and chemical effects on virtually all crustal processes. Tectonic deformation and fluid transport are coupled in a complex manner. This is a proposal to initiate an experimental program to investigate the relationship between deformation and transport properties ofcrustal rocks. Experiments will be conducted to investigate stress-induced dilatant and compactive deformation and its influence on the electrical and hydraulic transport properties. The stress-induced microstructure will be characterized quantitatively, and network models will be developed to simulate the evolution of transport properties with deformation. Electrokinetic phenomena associated with the coupling between fluid flow and electric field will also be investigated. The overall objective is to establish dynamic links between the evolution of transport properties and the micromechanics of failure in crustal rocks. The scientific results are of importance in geophysical applications ranging from the near-surface prospecting for oil and minerals through deeper crustal sounding to study the dynamics of seismogenic, volcanic and geothermal systems.

9805072Wong流体对几乎所有的地壳过程都有重要的力学和化学作用。 构造变形和流体输运以复杂的方式耦合。 这是一个建议，启动一个实验计划，以研究变形和地壳岩石的输运性质之间的关系。 将进行实验，以调查应力引起的膨胀和压实变形及其对电和水力输运特性的影响。 应力诱导的微观结构将被定量表征，并将开发网络模型来模拟输运性质随变形的演变。 与流体流动和电场之间的耦合相关的电动现象也将被研究。 总的目标是在地壳岩石中的输运性质的演化和破坏的微观力学之间建立动态联系。 这些科学成果在地球物理应用方面具有重要意义，从近地表石油和矿物勘探到地壳深部探测，再到研究地震、火山和地热系统的动力学。