U.S.-France Cooperative Research: Mechanical and Transport Properties of Rock

9815570Wong这个为期三年的奖项将支持纽约州立大学石溪分校的王登芳和法国巴黎高等师范学院的Yves Gueguen在地球科学方面的美法合作研究。研究的目的是研究岩石的力学、化学应力和流体运移对岩石物理性质的影响。流体输运与地壳中的许多过程有关，对地震构造学、石油地质学、水地球化学和岩土工程中感兴趣的过程具有重要的机械和化学作用。控制流体输运的关键物理参数是渗透率。研究人员将在与地壳压力相当的大范围压力条件下测量岩石变形和电输运特性。通过新的实验，他们将研究渗透率、压力和胶结对松散和胶结颗粒材料力学行为的影响。同时，将发展理论模型来解释岩石的物理性质。美国研究人员为这次合作带来了与岩石物理性质有关的实验和测量方面的专业知识。法国在理论和实验技术方面的专业知识为电测量提供了补充。这项合作将促进对地壳过程制约因素的基本认识。

9815570WongThis three-year award will support US-France collaborative research in earth science between Teng-fong Wong of the State University of New York at Stony Brook and Yves Gueguen of the Ecole Normale Superieure in Paris, France. The objective of the research is to study the mechanical, chemical stress and the impact of the transport of fluid on physical properties of rocks. Fluid transport, linked to many processes in the earth's crust, exerts significant mechanical and chemical effects on processes of interest in seismotectonics, petroleum geology, aqueous geochemistry, and geotechnical engineering. The key physical parameter that governs fluid transport is permeability. The investigators will measure rock deformation and electric transport properties over a wide range of pressure conditions comparable to crustal pressure. Through new experiments, they will investigate the effects of permeability, pressure and cementation on mechanical behavior of unconsolidated and cemented granular materials. In parallel, theoretical models will be developed to interpret the physical properties of rocks. The US investigator brings to this collaboration expertise in experimentation and measurements related to physical properties of rocks. This is complemented by French expertise in theory and in experimental techniques geared for electrical measurements. The collaboration will advance fundamental understanding of the constraints on crustal processes.