【摘要】 以丹江口水库为对象,根据库区地震地质构造建立库区的有限元模型,反演库区蓄水前的构造应力场和地应力场,并分析其分布特点以及库区塑性应变特点,探讨构造应力场对水库诱发地震的影响,研究成果为水库诱发地震机理研究提供参考,并为丹江口水库续建工程诱发地震的预测与安全评价提供依据.更多还原

【Abstract】 Taking the Danjiangkou Reservoir as an object,a finite-element model is established according to seismic geological structure of the reservoir area.Then tectonic stress field and crust stress field are calculated applying the software of Ansys before the reservoir impoundment;their distribution characteristics and plastic strain features in reservoir area are analyzed.The influence of tectonic stress field on reservoir-induced earthquake is discussed.The research achievement can promote the study of mechanism of reservoir-induced earthquake and be for reference of researvoir-induced earthquake forecast and safe evaluation after the water level of Danjiangkou Reservoir rises.更多还原