从地震模拟看匀阻段与大震的关系

运用滑块模型建立了一个地震活动的计算机模拟系统。对地震活动计算机模型进行反复试验，认识到断层失稳过程中摩擦强度分布的重要性。把在断层滑动中摩擦阻力分布比较均匀的段称为匀阻段。对大地震而言，断层摩擦阻力的大或小都不是决定因素，而具有较长的匀阻段才是发生大震的首要条件

SEISMIC SIMULATION:CORRELATION OF RESISTANCE-HOMOGENEOUS FAULT SEGMENT WITH LARGE EAPTHQUAKES

Acom puter sim ulation system of earthquakes was established with mass-spring model．Af-ter a series of testing with various models，distribution of slip resistance in a fault segment wasfound to play an importent part during the fault slip process.Basd on the concept of’Resistances-Uniformizing’，suggested by Wan Shengzhu from rock experiment，the’Resistanc-homoge-neous fault segment’was recommended to describe the fault segment with homogeneous resis－tance during fault slip．The most important for a large earthquake is not the magnitude of faultstrengh，but the length of a Resistance-homogeneous segment