摘要
Abstract
Deep groundwater is unique aquifer system of northwest plains. It has the hydrogeological characteristics of wide distribution, buried deep and poor mining recovery. Due to labor exploitation in 30 years, natural flow field has changed a lot, and formed several over--exploitation funnels with different size and different patterns. By using regional research and measured datas in many years, on the basis of studying regional groundwater circulation system, deep groundwater dynamic field characteristics of early years or in the characteristics year under exploitation condition, the evolution degree of deep groundwater in northwest plains has been studied. As showed by the study result, it is found that nearly 30 years, regional water head had been overall declined, and groundwater dynamic field had a significant change. Amplitude reductionln is small in the whole salt water area in the Yellow River Delta , Shenxian--Yanggu area and Jiaxiang uplift, while it is over than 20m in other areas. In Dezhou--Wucheng, Binzhou-Boxing and districts in Heze city, the amplitude reduction are over 60m, while its is more than 100m in Dezhou and Binzhou funnel center. At present, ground subsidence has been caused in Dezhou, Binzhou, Dongying, Heze and Jining city.关键词
动力场演化/循环系统/等水压线/变差/鲁西北平原Key words
Evolution of hydrodynamic field/circle system/equal hydraulic pressure line/variation/northwest plain分类
资源环境
