延怀盆地设定地震浅析

Preliminary Study on Scenario Earthquake in Yanqing- Huailai Basin

摘要:

通过延怀盆地构造背景、新构造活动、古地震等资料的分析,综合构造应力场模拟、构造类比、大震离逝率、孕震蓄能等因素及由经验公式推断的研究结果,对延怀盆地设定地震相关参数进行了研究。结果表明,延怀盆地设定地震的震级上限为7,发震断层为方家冲—营门矿段断层,震源深度为10 km左右。

Abstract:

Through analyzing the data of tectonic background, neo-tectonic movement, paleoearthquake, based on the research results by the means of tectonic stress field simulation, seismogenic structure similarity, strong earthquake elapsing rate, quake-breeding and energy-storing condition, et al. , the scenario earthquake parameters in Yanqing - Huailai Basin are preliminarily studied. The result shows that the maximum magnitude of scenario earthquake is 7, on the seismogenic fault of Fangjiachong - Yingmen- kuang, and focal depth is about 10 km.