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本文用龙羊峡水电站的水压致裂应力测量结果分析了该水库发生诱发地震的可能性。结果表明,该水库库区浅层的应力特点为:S_H>Sh>Sv,具备发生诱发地震的应力条件,但浅部和深部的应力状态可能不同。这给由浅部应力测值推测可能发生的诱发地震的震级的上限带来困难。
In this paper, the hydraulic fracturing stress of Longyangxia Hydropower Station is used to analyze the possibility of induced earthquake in this reservoir. The results show that the stress characteristics of shallow reservoir in this reservoir area are: S_H> Sh> Sv, which have the stress conditions for induced earthquake, but the stress state may be different between shallow and deep. This makes it difficult to infer from the shallow stress measurements the possible upper limit of the magnitude of the induced earthquake.