【摘要】 应用加卸载响应比的理论和方法，根据从岩石的应变与应力的非线性响应，分析了井水位固体潮加卸载响应比的机理，并研究出利用地下水位对固体潮响应来计算加卸载响应比的方法。以此方法计算了我国大华北地区部分井水位的固体潮加卸载响应比，分析了张北１９９８ 年６．２ 级地震前地下水位固体潮加卸载响应比的变化，结果显示大多数井水位固体潮加卸载响应比在张北地震前３ 到９ 个月出现异常增大。更多还原

【Abstract】 Based on the nonlinear response of stress and strain of rock,the physical mechanism of loading and unloading response ratio of groundwater level to earth tide is analysed and the corresponding method is studied.The loading and unloading response ratio of groundwater level to earth tide in the North China is calculated by this method with observation data, and the variation of response ratio before Zhangbei earthquake( M \-s6.2) in 1998 is analysed.The anomalies of loading and unloading response ratio of most groundwater levels to earth tides increased in 3～9 months before the earthquake.更多还原