断层面解随时间没有明显的变化。
提出在同一地震构造带上，小震断层面解的主压应力方向具有一致性。
It is suggested that on the same seismotectonic zone, the directions of principal compressional stress of fault plane solution of small earthquakes are consistent.
震区的主压应力为北北西方向，两震的受力方向基本一致，但断层面解明显不同。
According to focal mechanism, the directions of main press stress of the two are NNW in the seismic area but the fault plane solutions are different.
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