【摘要】 应用应力应变理论，论证了在正常地壳应力作用下，地下流体动态处于稳定状态；中强地震发生前强烈应力作用下地下流处动态处于失稳状态。据此，提出地下流体动态稳定度的概念，给出了便于综合分析的地下流体动态稳定度的计算方法，应用于地震分析预报。对中强以上地震前地下流体观测资料的计算结果表明，地下流体稳定度异常显著，获得了较好的效果。更多还原

【Abstract】 According to the theory of stress and stain, the nuderground fluid should keep a dynamic stable status under a normal crustal stress. Before moderate and strong earthquake occured, however, the stable state would be destroyed, because of the crust stress anomalous variety. The conception of the dynamic stable degree of underground fluid is mentioned as the above theoretical foundation. The physical mechanism on the dynamic stable degree of underground fluid in this paper, meanwhile, it is used to predict earthquake. The results of data analyzed before moderate and strong events indicates the anomalies of the dynamic stable degree is obviously.更多还原