广州市江村水源地的岩溶水资源研究

江村水源地的隐伏岩溶,是以前的岩溶地面在晚更新世地壳间歇性下沉和海侵时被泥沙覆盖形成的.该水源地属半埋藏阶地,江村水源地1974～1983年平均开采量32945m~3/d,属过量开采,它是采区静水位和降落漏斗不能复原位,呈现衰减过程的主要原因.江村水源地岩溶水长期持续的可采量为3×10~4m~3/d,开采条件下的补给模数 909m~3/d·km~2,是有供水价值的水源地。

Study on Karstic Water Resource at the Supply Base of Jiang Village in Guangzhou

The covered karst in the supply base of Jiang Village results from the form- er karst feature that was covered by silt when earth's crust subsided spasmodically and sea advanced in Late Pleistocene Epoch. This supply base is in semi-buried terrace. The mean yields were 32945 m~3/d from 1974 to 1983, in the supply base, which may be considered an overexploitation. That is mainly responsible for that cone of depression and static level in the exploited district can not return and reveal att- enuate process. From the view point of long-term, this supply base is valuable if continued exploitable yields of karstic water in the supply base of Jiang Village are 30000 m~3/d and the recharge module under the exploitation condition is 909 m~3/d. km~2.