the granularity fractal dimension of fault gouges and the special micro structural features of quartz in fault gouges from the site of one pumping power station are discussed.And the activities and age of faults are calculated in the engineering area
the effects of the fault activities in primary workshop site on the regional stability are obtained.The analysis of fault activity plays an important role in evaluation of regional stability in underground engineering
and selecting appropriate site designing tunnel and ensuring the safety of underground engineering.