安宁河断裂带应力集中与发震机制的数值模拟分析 - 水土保持研究.PDF

12 2 . 12 . 2 Vol No 2005 4 Research of Soil and Water Conservation Apr. , 2005 房冬恒, 王运生, 乔国文 ( , 61005 ) : , , , , , 510 km , , : ; ; ; : 553: : 1005-340 (2005) 02-0077-03 P A Using the Numerical Simulation to Analyze the Concentration of - Stress and the Cause of Earthquake in Anning River Fault Zone FANG Dong-heng, WANG Yun-sheng, QIAO Guo-wen ( Colleg e of E nv ir onment and Civ il E ng ineering in Cheng d u Un iv ersity of Technology , Cheng d u 61005 , China) : . Abstract T he Anning River region is an area w here seismic act ivities occur frequently in our country By studying the structure and t he framew ork of the Anning River fault zone, the cause of t he eart hquakes in this area w as analyzed, and the three-dimensional geological numerical simulat ion w as used to prove that under the present regional stress t here are concent rations of stress in the crossing of fault s below the eart hs surface about 510 km, based on t he studying of the . - notional geologic model Hence the strong motion earthquakes of the Anning River fault zone distribute the area where ot her fault s w it h different direction joined in. ey words: the Anning River fault zone; concentration of stress; cause of the earthquake; numerical simulat ion [ 1] ( 1) , , , , , , ,