长春市地下水动态研究

根据长春市地下水观测井的动态监测资料,分析了长春市主要地下水类型的动态变化规律及原因。2000年以后,地下水位处于回升状态,松散岩类孔隙水水位埋深值年均减少0.16m,基岩裂隙水年均减少0.78m,其主要原因为限制开采量。典型观测孔水位埋深变化趋势公式表明,浅层地下水水位与气温密切相关,但滞后于气温1～1.5个月。

Dynamic research on groundwater in Changchun

Based on dynamic monitoring data of groundwater observation wells,the authors analyzed the dynamic variation trend and reason of main groundwater type in Changchun.Since 2000,the groundwater level has been in picking up state,and the depth of pore-water decreased for 0.16 m in loosening rocks and about 0.78 m in bedrock fissure water reduccd for each year,which was mainly caused by exploitation restriction of groundwater.The tendency of groundwater level of typical observation holes shows the groundwater level in shallow layer is closely related to air temperature,but there is a response lag for about 1～1.5 months.