Data for injection-induced fault slip on smooth and rough laboratory faults

The datasets archived here act as supplementary materials to the study entitled ‘Surface roughness controls injection-induced slip on laboratory faults ’ by Wang et al. This study has been submitted to Science Advances for potential publication. The authors have loaded cylindrical quartz-rich sandstone samples (50*100 mm) containing an inclined fault interface with varying surface roughness (saw-cut smooth surface vs. fractured rough surface) in a triaxial compression apparatus to a critical stress state and subsequently activated fault slip using defined fluid injection protocols. The authors have produced a series of injection-induced slip events on three samples, one containing a smooth fault and two samples cut by rough faults (Rough Fault #1 and Rough Fault #2, respectively) at a fixed confining pressure of 35 MPa. The datasets below summarize the experimental results of three experiments with the names of 'Smooth Fault', 'Rough Fault #1' and 'Rough Fault #2', respectively. In each fluid injection experiment, the measured values of shear stress, fault slip, etc. are recorded as a function of time with a sampling rate of 10 Hz. The header of each column in the data tables gives the recorded parameter and its corresponding unit, as shown in the first row.本处存档的数据集为王等人题为《表面粗糙度控制实验室断层注水诱导滑移》的研究提供补充材料。该研究已提交至《Science Advances》期刊以待评审发表。 研究人员将尺寸为50×100 mm的富石英质圆柱砂岩试样装入三轴压缩仪（triaxial compression apparatus）中，此类试样带有倾斜断层界面，且界面表面粗糙度存在差异（锯切光滑面与破裂粗糙面）；将试样加载至临界应力状态后，通过预设的流体注水规程触发断层滑移。研究人员在围压（confining pressure）固定为35 MPa的条件下，对3组试样开展了系列注水诱导滑移实验：其中1组试样带有光滑断层，另外2组分别带有粗糙断层（记为粗糙断层#1与粗糙断层#2）。下述数据集分别对应上述3组实验，实验名称依次为“光滑断层”“粗糙断层#1”与“粗糙断层#2”，并汇总了其实验结果。 在每一次流体注水实验中，剪切应力、断层滑移量等实测数据均以10 Hz的采样率（sampling rate）随时间记录。数据表中每一列的表头均标注了所记录的参数及其对应单位，如第一行所示。