Mechanical Compaction and Permeability Reduction in Relation to Cataclastic Flow

与碎裂流相关的机械压实和渗透率降低

• 批准号: 9219589
• 负责人: Teng-fong Wong
• 金额: $ 7.55万
• 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: 1993
• 资助国家: 美国
• 起止时间: 1993-08-01 至 1996-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219589&HistoricalAwards=false
• 关键词: Mechanical; Compaction; Permeability; Reduction; Relation

9219589 Wong Fluid exerts significant mechanical and chemical effects on virtually all crustal processes. Recent observations suggest that elevated pore pressures may exist in a range of crustal environments, including mature fault zones and accretionary complexes. Quantitative modeling of the generation and maintenance of overpressure in most of these problems requires a fundamental understanding of the relation among permeability, porosity and stress. This is an experimental program to determine permeability and porosity reduction in porous aggregates under triaxial compression conditions. Microstructural observations, acoustic emission measurements, micromechanical and percolation modeling will be integrated in the study so as to gain a fundamental physical understanding of mechanical compaction, permeability reduction, cataclastic flow and hydraulic transport in the crust. ***

[9219589]黄氏流体对几乎所有的地壳过程都有显著的力学和化学作用。最近的观测表明，高孔隙压力可能存在于一系列的地壳环境中，包括成熟的断裂带和增生复合体。在大多数这些问题中，对超压的产生和维持进行定量建模需要对渗透率、孔隙度和应力之间的关系有基本的了解。这是一个实验程序，以确定在三轴压缩条件下多孔聚集体的渗透率和孔隙度降低。研究将结合微观结构观测、声发射测量、微观力学和渗流模拟，从而对地壳的机械压实、渗透性降低、碎裂流和水力输运有基本的物理认识。＊＊＊