摘要
通过井口空气压力变化对井水位影响的试验,分析了井水位对空气压力变化响应幅度和滞后时间,认为在相同的井口空气压差情况下,压力变化周期越大,井水位响应幅度也越大,而位相滞后越小。水平层状承压含水层的理论研究表明,井水位对气压响应的滞后时间主要取决于含水层的导水系数和气压变化的周期,这两种参数越大,则滞后时间越小。因此,井水位对气压响应的滞后是由于水压井孔与含水层间渗流需要一定时间造成的,而不是由于地面气压传递到含水层时产生衰减和滞后引起的。
Based on a test for the effects of barometric pressure changes on well level, the amplitudes response and lag time of well water level to the air pressure changes are analyzed. In the same air pressure difference, the bigger the period of pressure change, the bigger is amplitudes response of well water level, while the smaller is phase lag. The theory study on the horizontal multilayer confined aquifer shown that the lag time of response of well Water level mainly depends on the transmissibility of aquifer and the change peroid of barometric pressure. The bigger the two parameters, the smaller is the lag time. Therefore the response lag of well water level to the barometric perssure is caused by water permeation, because the permeation existing in well and aquifer requires certain time.
出处
《地壳形变与地震》
CSCD
1993年第4期51-56,共6页
Crustal Deformation and Earthquake
关键词
气压
井
水位
地震观测
well water level
barometric pressure
response
