水文地质调查与综合物探在找水中的应用  

Application of Hydrogeological Survey and Integrated Geophysical Prospecting in Water Prospecting

作　　者：高欢[1] GAO Huan(Henan Bureau of Geology and Mineral Exploration and Development The Second Geological and Mineral Survey Institute,Zhengzhou 450001,China)

机构地区：[1]河南省地质矿产勘查开发局第二地质矿产调查院,郑州450001

出　　处：《水利科技与经济》2022年第7期79-84,共6页Water Conservancy Science and Technology and Economy

摘　　要：针对贫水地区找水问题,通过物探手段对4个找水点的水源进行探测,介绍了水文地质调查与综合物探相结合的找水技术。通过对物探成果分析和利用钻孔验证,对4个找水点的富水性进行确定,为地下水勘察工作提供参考和借鉴。结果表明,在测区①内极距为70 m条件下,R a和R b两条曲线在里程560~580段附近呈现出正交特征;在极距150 m条件下,两条曲线在600 m处的剖面出现低阻正交点,推断出在600 m剖面附近为断裂构造发育带。在测区②内极距为50 m条件下,R a和R b两条曲线在里程390剖面呈现出正交特征;在极距110 m条件下,两条曲线在里程420 m处的剖面出现低阻正交点,结合视电阻率拟断面图,推断出在420 m剖面附近为断裂构造发育带。根据钻探的数据和抽水试验测得的结果进行分析,测区①内的富水性较好;测区②和测区③内受到测区断层为压性断层的影响,探水孔出水量较低;测区④内有较好的地下水补给条件,富水性强。Aiming at the water-seeking situation in water-deficient areas,this paper detects the water sources of four water-seeking points by means of geophysical exploration,and introduces the water-seeking technology combining hydrogeological survey and comprehensive geophysical prospecting.The water richness of the four water-seeking points has been determined,which provides a reference for groundwater survey work.The results show that the curves of R a and R b are orthogonal at the range of 560~580 in the condition of 70 m inner polar distance of survey area 1,and at the condition of 150 m inner polar distance,the two curves appear low resistance orthogonal points at 600 m section,and it is inferred that there is a fault structure development zone near the 600 m section.Under the condition of 50 m inner polar distance in survey area 2,the curves of R a and R b show orthogonal characteristics in the 390 section.Under the condition of 110 m distance between the two curves,the low resistance orthogonal point appears in the section at the distance of 420 m,combining with the quasi-section diagram of apparent resistivity,it is concluded that the fault structure developed near the section at 420 m.According to the data of drilling and the results of pumping test,the water-rich property in area 1 is better.In survey area 2 and 3,because the fault in survey area is a pressure fault,the water output of water exploration hole is low.There is a better recharge condition of groundwater in survey area 4,and the water-rich property is strong.

关 键 词：水文调查 综合物探 联合剖面法 高密度电法 

分 类 号：TV213[水利工程—水文学及水资源]