【摘要】 在对渑池盆地岩溶含水系统的平面边界和垂向边界进行分析的基础上,采用均衡法对岩溶含水系统的地下水资源量进行了计算,结果表明:(1)现状条件下为负均衡,地下水位年均降幅为1.79 m;丰水年为正均衡,地下水位升幅为0.01 m;平水年和枯水年均为负均衡,地下水位降幅分别为4.60、16.89 m。(2)该地区多孔多年水位观测资料表明,水位表现为持续下降,1984—2008年水位下降40~140 m,多孔平均水位年降幅为5.68 m,均衡计算结果与实测数据基本吻合。(3)岩溶地下水现状条件下的补给量主要是大气降水入渗,约占74.0%,岩溶地下水的排泄量主要为水源地开采,约占97.5%。更多还原

【Abstract】 Based on the analysis of the plane boundary and vertical boundary of the Karst water system in Mianchi Basin,this paper calculated the groundwater resources of the karst water system by using equilibrium-approach. The outcomes show that the annual groundwater level is decreased by 1.79 m during the balance period,it is in the state of positive balance in wet years with water level increasing by 0.01 m,while it is in the state of negative balance in normal and dry years,the groundwater level downrange is 4.60 m in normal years and 16.89 m in dry years. The groundwater level is in a continuous decline according to the analysis data of the groundwater level of boreholes within the region;the groundwater level has been decreased by 40-140 m during the period of 1984-2008,the annual decline of the average groundwater level of boreholes is 5.68 m,the calculation results fit well with the actual data of observation boreholes. The groundwater recharge mainly comes from infiltration of precipitation,making up 74.0%,while the discharge comes from exploitation of water source,covering about 97.5%.更多还原