Then on 29 June 1992 the m 6.6 Big Bear Earthquake occurred about 14.5m (9 miles) from the dam site on a unnamed fault in response to the rupture on the Landers fault.
29日又发生了6.6级的大熊地震，(因发生在大熊湖而得名)这次地震震中在离大坝14.5公里的一个不知名的断层，是受到兰德斯断裂影响而产生的。
The main Che-Lung-Pu fault located about 300m (1000ft) away from the structure was known at the time of the design of the dam, but not the branch that ruptured under the dam.
在这座大坝设计时，离大坝300米处有一个主断层，当时叫作九芎坑断层。但是大坝底下那一段并没有断裂。
The authors noted “we shall not consider the possibility of a large differential movement occurring in a fault transversing the dam foundation.
作者说：“我们不要再考虑横跨大坝基部的断裂带地层可能发生的运动的差别。
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