东冲半岛的水文地质条件和找水方向调查
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摘要
霞浦县东冲半岛为福建省典型旱区,它属中亚热带季风湿润气候,降雨量多年平均值为1 429.06mm,可为地下水的补给来源.区内地层分布较简单,岩浆活动强烈,其地下水主要有松散岩类孔隙含水岩组、残积层孔隙裂隙含水岩组和基岩裂隙含水岩组3种类型.结合东冲半岛的地形地貌、地质、水文地质条件和此处已实施的水文孔,建议其找水方向应以风化裂隙水和脉岩与围岩接触裂隙水为主,不考虑在海积层(咸水)和第四系松散孔层找水;在基岩裸露区域,可以考虑跨水文地质单元调水.
Dongchong Peninsula in Xiapu County is a typical drought zone in Fujian. The subtropical monsoon humid climate there,with an average annual rainfall of 1 429.06 mm,can be regarded as a supply source of groundwater.The stratigraphic distribution in the area is relatively simple,and the magmatic activity is very strong.Its groundwater is mainly composed of 3 types of aquifer group:porous aquifer group in loose rocks,porous and fissured aquifer group in eluvium and fissured aquifer group in bed rocks.According to the topography, geology, hydrogeological conditions and hydrologic holes drilled in the Dongchong Peninsula,it is suggested that the direction of water exploration should be dominated by weathering-fissure water and fissure water contacted with dike rock and surrounding rock,without considering water in the marine deposit(salt water) and the loose pore layer of Quaternary system.Cross-hydrogeological unit water transfer can be considered in the exposed area of bedrock.
Dongchong Peninsula in Xiapu County is a typical drought zone in Fujian. The subtropical monsoon humid climate there,with an average annual rainfall of 1 429.06 mm,can be regarded as a supply source of groundwater.The stratigraphic distribution in the area is relatively simple,and the magmatic activity is very strong.Its groundwater is mainly composed of 3 types of aquifer group:porous aquifer group in loose rocks,porous and fissured aquifer group in eluvium and fissured aquifer group in bed rocks.According to the topography, geology, hydrogeological conditions and hydrologic holes drilled in the Dongchong Peninsula,it is suggested that the direction of water exploration should be dominated by weathering-fissure water and fissure water contacted with dike rock and surrounding rock,without considering water in the marine deposit(salt water) and the loose pore layer of Quaternary system.Cross-hydrogeological unit water transfer can be considered in the exposed area of bedrock.
引文
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