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安徽北部岩溶地下水的动态特征,可用泉的流量动态及地下水位动态来表征。(1)大泉的衰减特征值β=0.03～0.04。(2)岩溶裸露区的水位动态特征方程为:h_t=hoe(3)隐伏岩溶区为向斜储水盆地,上覆第四系含水岩组,有“天窗”与岩溶水发生水力联系。从某大型供水源地的孔群抽水试验表明:凡有“天窗”补给量加入岩溶水的观测孔,其S—lgt曲线在出现第一直线斜率段m_1之后又出现第二较缀的直线斜率段m_2,同时每个孔在该段的斜率相近,因此可以 则可同时求出岩溶水的导水系数T、及“天窗”补给量Q_天。
The dynamic characteristics of karst groundwater in northern Anhui can be characterized by the spring flow dynamics and groundwater level dynamics. (1) Big spring attenuation characteristic value β = 0.03 ~ 0.04. (2) The dynamic characteristic equation of water level in the bare area of karst is: h_t = hoe (3) The concealed karst area is a syncline reservoir basin, overlying Quaternary aquifer group, and the “skylight” has hydraulic connection with karst water. From a large-scale water source hole group pumping tests show that: Where the “sunroof” recharge added to the karst water observation hole, the S-lgt curve occurs after the first line of the slope of the m_1 section after the second line appeared more linear Slope section m_2, and the slope of each hole in this section is similar, so that the conductivity coefficient T of karst water and the recharge amount Q_day of the skylight can be obtained at the same time.