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一、引言水库诱发地震,多数学者认为是蓄水作用促使浅部地壳构造应力或岩体自重应力释放的结果。研究表明,诱震概率随水库规模的扩大而增加,大Ⅰ型水库(库容大于10×10~8m~3)诱震概率约12％,超大型水库(坝高大于200m)的诱震概率高:达28％;60年代以来,世界范围内主要水库诱发地震有中国广东新丰江水库地震(M_S=6.1,1962.3)、赞比亚卡里巴水库地震(M_S=6.1,1963.9)、希腊克里玛斯塔水库地震(M_S=6.3,1966.2)及印度柯依那水库地震(M_S=6.5,1967.12)等6级以上地震,促使人们更多地探索其诱震机理和预测问题,目前这一过程的探索仍处在资料积累阶段。许多
I. INTRODUCTION Reservoir-induced earthquakes have been considered by most scholars as the result of stress-relief of shallow crustal tectonic stress or rock mass due to water storage. The results show that the probability of seismogenic vibration increases with the expansion of the reservoir scale. The induced probability of large type Ⅰ reservoirs (with a reservoir capacity of more than 10 × 10 ~ 8m ~ 3) is about 12%, and the induced probability of very large reservoirs (dam height> 200m) : Up to 28%. Since the 1960s, the earthquakes in the major reservoirs around the world have been caused by the earthquake of Xinfengjiang Reservoir in Guangdong, China (M_S = 6.1, 1962.3), the Karibaba Reservoir in Zambia (M_S = 6.1, 1963.9) More than 6 earthquakes such as the Strait Reservoir Earthquake (M_S = 6.3, 1966.2) and the Ke’e na Reservoir Earthquake (M_S = 6.5, 1967.12) have prompted people to explore more about their seismogenic mechanism and prediction problems. At present, Exploration is still in the data accumulation phase. a lot of