Experimental data for rock friction tests at varying confining pressure and load point velocity

This folder contains experimental data of displacement-driven triaxial compression experiments on porous quartz-rich Bentheim sandstone samples containing a saw-cut fault under conditions of varying load point velocities (1-10 μm/s), confining pressures (35-75 MPa) and constant pore pressure (5 MPa). Mechanical deformation and hydraulic data were recorded continuously at a sampling rate of 10 Hz throughout the tests. For those tests deformed at a load point velocity of 1 μm/s and producing slow fault slip events, we only provide a dataset with a 10 Hz sampling rate. To better resolve fast slip events caused by high load point velocities, high-frequency (5120 Hz) mechanical and deformation data recordings were manually triggered shortly before, during, and after each fast slip event, which are also provided here. The format of the archived dataset here is '*.mat', which can only be loaded and read using MATLAB software. More details on the header of each column in the table and its unit can be found in the file 'README'.本文件夹收录了针对带有锯切断层的多孔富石英本特汉姆砂岩（Bentheim sandstone）试样，在加载点速率（1~10 μm/s）、围压（35~75 MPa）可变且孔隙压力恒定为5 MPa的条件下开展的位移驱动三轴压缩实验的实验数据。实验全程以10 Hz的采样率连续采集机械变形与水力监测数据。针对加载点速率为1 μm/s且产生慢速断层滑动事件的实验，仅提供10 Hz采样率的数据集。为更精准地解析由高加载点速率诱发的快速断层滑动事件，我们在每次快速滑动事件发生前、发生期间及发生后短时间内，手动触发了高频（5120 Hz）机械与变形数据采集，此类高频数据同样收录于本数据集包中。本归档数据集的格式为'*.mat'，仅可通过MATLAB软件加载读取。各数据列的表头信息及对应单位的详细说明可参阅文件'README'。