Effect of Stress on Transport Properties of Rock

WongFluid对几乎所有的地壳过程都产生了显著的力学和化学效应。构造变形与流体输运是一种复杂的耦合关系。这是一项研究地壳岩石变形和运移性质之间关系的实验计划的建议。试验将研究应力诱导的扩容和压实变形及其对电学和水力传输特性的影响。应力诱导的微观结构将被定量表征，网络模型将被开发来模拟随变形的输运性质的演变。与流体流动和电场耦合有关的电动现象也将被研究。总的目标是在地壳岩石中运输性质的演变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中具有重要意义，从石油和矿产的近地表勘探到地壳更深的测深，以研究孕震、火山和地热系统的动力学。

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.