静乐井是山西省地下水观测网中的一口地震观测井。从 1 983～ 1 996年的 1 4a观测中 ,水位动态变化出现过 3个高值时段 ,水位的高值虽有降雨渗入的影响 ,但主要可能是反映区域应力场加强的变化过程 ,因为 3个水位高值时段与华北地区中强地震的活跃时期基本吻合 Jingle well is Shanxi Province groundwater observation network in a seismic observation well. In the period of 14 a from 1983 to 1996, there were three periods of high water level dynamic changes. Although the high water level affected by rainfall infiltration, the change of the stress field may be mainly reflected in the change of 3 The period of high water level coincides with the active period of moderate-strong earthquakes in North China