Supplementary Data for the study of Effects of Fault Gouge Composition and Confining Pressure on Friction and Instability

This dataset contains the raw and processed experimental data associated with the study entitled “Effects of Fault Gouge Composition and Confining Pressure on Friction and Instability.” The experiments were conducted using cylindrical specimens containing gouge-filled saw-cut fractures in a conventional triaxial compression apparatus. Three contrasting fault-gouge assemblages were tested under confining pressures of 4, 7, 10, and 13 MPa. The dataset is organized into two main components: Rock-mechanics data, containing the mechanical loading and frictional-response records. Acoustic-emission data, containing the detected AE events, waveform parameters, and source-location results. The three tested materials represent a rock-particle-rich gouge, a natural mixed gouge, and a clay-rich gouge. The tests were conducted under oven-dried, room-temperature conditions without externally imposed pore-fluid pressure. The velocity-stepping stages covered the low-velocity range of 0.1–10 μm/s.本数据集收录与题为《断层泥组分与围压对摩擦作用及失稳的影响》的研究相关的原始及经处理的实验数据。 本实验采用常规三轴压缩装置，以充填有断层泥的锯切裂隙圆柱试样为研究对象开展测试。本次测试共设置三组具有显著差异的断层泥组合试样，分别在围压4、7、10及13 MPa的条件下完成测试。 本数据集分为两大核心模块：岩石力学数据模块，收录机械加载与摩擦响应相关记录；声发射（Acoustic Emission, AE）数据模块，收录探测得到的声发射事件、波形参数及震源定位结果。 本次测试的三类试样分别为富岩石颗粒型断层泥、天然混合型断层泥与富黏土型断层泥。所有测试均在烘干、室温环境下开展，未施加外部孔隙流体压力。速度步进加载阶段的加载速率覆盖0.1~10 μm/s的低速区间。