摘要
水资源缺乏严重影响了赣南地区经济社会发展,本文采用水文地质调查结合直流电法分别在赣州市赣县区花岗岩分布区和寒武纪变质岩分布区成功找到了能满足当地村民需求的生活用水,为该区脱贫摘帽贡献了力量,同时为该区乡村振兴战略打下了坚实的基础。具体工作方法为:(1)在花岗岩地区,先通过水文地质调查确定浅层强风化构造裂隙为潜在含水目标层,然后结合直流电法查证浅层强风化构造裂隙带的分布、发育厚度、规模及赋水特征;(2)在寒武纪变质岩地区,找水目标层为构造破碎带,先通过水文地质调查确定构造破碎带的分布及走向,后续采用直流电法探查构造破碎带的发育特征及富水性。结果表明:采用上述方法成功探查到富水区域,为钻孔孔位比选及精准定位提供数据支撑;通过钻探和抽水试验验证了物探解译结果,两处钻孔均达到了预期目标,该找水方法可以为当地后续的找水工作提供借鉴和参考。
The deficiency of water resources has seriously affected the economic and social development of southern Jiangxi.In this paper,ground water has been successfully found through the hydrogeological survey combined with the direct current prospecting in the granite and the Cambrian metamorphic rock distribution areas in Ganxian District,Ganzhou City,which has contributed to the poverty alleviation in the district and laid a solid foundation for the rural revitalization strategy.The specific working methods are as follows:(1)In the granite area,firstly the shallow strongly weathered structural fissures were determined as potential target water-bearing beds through hydrogeological survey,and then were verified the distribution,thickness,scale and water-bearing characteristics by the direct current prospecting.(2)In the Cambrian metamorphic rock area,the target layer for water exploration is the structural fractured zone,the distribution and trend of which were firstly determined through hydrogeological surveys,and then the development characteristics and water richness of which were explored bydirect current prospecting.The results show that the water-rich area was successfully detected by the above methods,which provided data for the comparison and precise positioning of boreholes.The following drilling and pumping tests verified the interpretation results of geophysical exploration,and water output of both boreholes achieved the expected goals.The groundwater search can provide reference for local groundwater exploring work.
作者
欧阳波罗
易强
路韬
黄超
邵长生
肖立权
刘声凯
OUYANG Bo-Luo;YI Qiang;LU Tao;HUANG Chao;SHAO Chang-Sheng;XIAO Li-Quan;LIU Sheng-Kai(Hunan Institute of Hydrogeological and Environment Geological Survey and Monitoring,Changsha 410129,Hunan,China;Wuhan Center of China Geological Survey(Central South China Innovation Center for Geosciences),Wuhan 430205,Hubei,China)
出处
《华南地质》
CAS
2022年第2期340-349,共10页
South China Geology
基金
中国地质调查局项目(DD20190328)。
关键词
地下水勘查
水文地质调查
直流电法
断裂构造
赣南地区
groundwater survey
hydrogeological survey
direct current prospecting
fault structure
southern Jiangxi province
