综合物化探方法在地下水勘查中的应用——以嘉鱼县官桥镇为例

Application of Integrated Geophysical and Geochemical Exploration Method in Groundwater Exploration:Take Guanqiao Town,Jiayu County as an Example

为探讨地下水勘查井位快速定位问题,采取水文地质调查、土壤氡气测量、天然电场选频法测量、钻探等勘探手段,成功在嘉鱼县官桥镇实施2口探采结合井。大牛山村勘查区SHK01水井孔深223 m,实际抽水降深14.21 m,涌水量为169.46 m^(3)/d;观音寺村勘查区SHK02水井孔深165 m,实际抽水降深7.42 m,涌水量为98.70 m^(3)/d。此次应用研究表明,在地表有大面积第四系覆盖情况下,可利用土壤氡气测量和天然电场选频法测量精确圈定裂隙含水带,该方法组合有效且快速,可为本区地下水勘查提供新思路。

In order to solve the problem of rapid positioning of groundwater exploration wells,this paper brings hydrogeological investigation,soil radon measurement,natural electric field frequency selection method and drilling to explore groundwater,and two exploration and production wells are successfully implemented in Guanqiao Town,Jiayu County.The hole depth of SHK01 well in Daniushan Village is 223 m,the actual pumping drawdown is 14.21 m,and the water inflow is 169.46 m^(3)/d;the hole depth of SHK02 well in Guanyinsi Village is 165 m,the actual pumping drawdown is 7.42 m,and the water inflow is 98.70 m^(3)/d.The application research shows that the fissure water-bearing zone can be delineated by soil radon measurement and natural electric field frequency selection method under the condition of large area Quaternary cover on the surface.This method is effective and fast,and can provide new ideas for groundwater exploration in this area.