A method for analyzing response of buried pipeline due to earthquake fault movement;

A detailed research on the types of the seismic faults,their behaviours,distribu-tion,the features and the relations with the existed and their relation to the pre-existing faults in 19 large historical earthquakes and 10 fossil earthquakes.

The seismogenic fault and the dynamic mechanism of the Ning er,Yunnan Province MS6.

Through calculating additional tidal stress component along the P axis of principle compressional stress and the T axis of principle extensional stress at source,the action mode of additional tidal stress on seismogenic fault is analyzed on the basis of Mohr-Coulomb criterion.

51 Zhongwei earthquake at Qingtouya, South Zhongwei county, Ningxia Hui Autonomous Region, andZhongwei-Tongxin fault zone had been the causative fault.

A probabilistic approach to evaluate permanent displacement of causative faults is presented based on engineering seismic risk analysis frame work of Cornell,of which the parameters includes the fault model,probabilistic models for earthquake occurrence,the relations among of earthquake magnitude with rupture length,width and surface displacement.