珠江三角洲地区地下水贮存特征及其开发前景分析

Analysis on Reserving Characteristic and Exploiting Foreground of Groundwater in Pearl River Delta Region

珠江三角洲地区地下水类型多样,水化学特征复杂,基岩裂隙水和岩溶水水力交替强烈而水质好,第四系松散层地下水径流迟缓而水质较差。地下水动态受降雨影响明显,具季节性变化特征。区域内地下水资源最有开发潜力的是广花盆地岩溶水,其次为三角洲后缘的松散层孔隙水,而基岩裂隙水和滨海砂堤、砂地孔隙水分别只能作为山区村民和滨海缺水港口及岛屿的分散供水水源。

In pearl river delta region, the types of groundwater were complex, the characteristic of groundwater chemistry was variational, water quality of bedrock fissure water and karst water was fine due to their intense hydraulis alternation, water quality of quaternary pore water was rel- atively bad-as a result of slow flowoff. The dynamic transformation of groundwater was influenced distinctly by rainfall, with seasonal nature. In the region, it was indicated that the Guang-Hua basin was the best place where the karst groundwater resource was exploited, the afterbody of delta with pore groundwater resource was the next place, bedrock fissure water could merely accommodate the inhabitants in mountain area, pore water in coastal grait terra and bank could furnish only for coastal harbors and islands.