水利水电科技进展2025，Vol.45Issue(5)：89-101,13.DOI:10.3880/j.issn.1006-7647.2025.05.009
库水渗压驱动下断层破碎带充填介质泥化及渗透特性演化研究进展
Research progress on argillization and permeability evolution of fault fracture zone filling materials driven by reservoir water seepage pressure
摘要
Abstract
To elucidate the coupling evolution mechanism of argillization and permeability in fault fracture zone filling materials driven by reservoir water seepage pressure,research progress on geological characteristics,experimental methods,and degradation mechanisms was systematically reviewed.Under in-situ high tectonic stress constraints,compressible faults exhibit a"fault core-failure zone"zonal structure.The low-permeability barrier within the core,which is rich in clay minerals,is susceptible to mineral softening and argillization under prolonged seepage pressure,resulting in an increase in permeability by three to five orders of magnitude.In-situ high-pressure water injection tests can capture the inhibitive effect of tectonic stress on fracture closure.In contrast,traditional laboratory tests often fail to accurately simulate realistic seepage pathways due to weakened cementation effects and stress release-induced distortions.The argillization of clay minerals leads to pore reconstruction,while fine particle content significantly increases the initiation pressure gradient through mechanisms such as flocculation cementation and"water film"effects.Seepage pressure-driven degradation follows a pattern wherein water seepage pressure promotes the penetration of seepage channels by propagating original fractures and accelerating particle migration and loss,ultimately leading to a notable reduction in the critical hydraulic gradient.关键词
断层破碎带/充填介质/泥化/渗透特性/劣化机理Key words
fault fracture zone/filling materials/argillization/permeability characteristics/degradation mechanisms分类
建筑与水利引用本文复制引用
盛金昌,李智涵,赵远洋,王惠民..库水渗压驱动下断层破碎带充填介质泥化及渗透特性演化研究进展[J].水利水电科技进展,2025,45(5):89-101,13.基金项目
国家自然科学基金项目(42372296,42202286) （42372296,42202286）
中国博士后科学基金项目(2023M730916) （2023M730916）
