摘要
新丰江水库诱发地震是在什么深度发生的?通过对该水库基底断裂内岩石的三轴实验,获取了该岩石较完整的三轴强度包络线。利用强度理论、孔隙水压力并结合地震资料,对水库诱发地震的极限深度进行研究后得出:①具有诱发地震条件的水库,存在一个诱发空间,若岩体深度超过某一值(极限深度)后,将不再有诱发地震;岩石不同,极限深度也不同;②新丰江水库区的诱发地震,只在约14km深度的岩体内发生,震源深度≥14km的地震,均为普通的构造地震。
The research shows that: 1.A induced earthquake will not occur if the depth of the rock mass exceed a certain point ( i.e. the bounding depth), although there are some inducing conditions of earthquake in a reservoir. The different rock, the different bounding depth. 2. A induced earthquake in Xinfengjiang reservoir only occurs inside the rock mass which depth is within 14 km. If the focal depth is more than 14km, the earthquake is commonly the tectonic quake.
出处
《华南地震》
2005年第4期62-65,共4页
South China Journal of Seismology
基金
广东省科技厅资助项目(2002C32605)
关键词
新丰江地震
孔隙水压力
极限深度
岩石三轴强度包络线
Xinfengjiang earthquake
Pore water pressure
Bounding depth
Triaxial intension enveloping curves