滁州花山流域第四系覆盖层渗透性评价  

Permeability Evaluation of Quaternary Overburden in Huashan Basin,Chuzhou

作　　者：戴云峰 孙晓敏 倪显锋 林锦[1,2] 闵星[1,2] 刘九夫[1,2] DAI Yunfeng;SUN Xiaomin;NI Xianfeng;LIN Jin;MIN Xin;LIU Jiufu(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Groundwater Research Center,Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029 [2]南京水利科学研究院地下水研究中心,江苏南京210029

出　　处：《水文》2022年第5期1-6,共6页Journal of China Hydrology

基　　金：国家自然科学基金资助项目(51709186);中央级公益性科研院所基本科研业务费项目(Y519004)。

摘　　要：为了快速准确获取滁州花山流域第四系覆盖层渗透性参数,掌握流域下垫面地层渗透性分布特征,在流域浅层地下水监测井进行了振荡试验,通过标准曲线配线法计算了地层水文地质参数,对比了两种振荡试验半解析解模型的计算结果。结果表明:利用振荡试验快速获取的滁州花山流域第四系地层渗透系数和贮水率等参数准确可靠,试验可同时估算地层给水度,流域内第四系地层渗透性存在明显非均质性,上游区域渗透系数和给水度高于下游区域渗透系数和给水度,子流域由东向西贮水率存在减小趋势。To obtain the permeability coefficients of quaternary overburden in Huashan basin(Chuzhou)and the permeability distribution characteristics of stratum in the underlying surface of the basin quickly and accurately,the slug tests were carried out in the shallow groundwater monitoring wells.The hydrogeological parameters of stratum were calculated by matching method with type curves,and the calculation results of two semi-analytical solution models of slug tests were compared.The results show that,the hydraulic conductivity and specific storage coefficient of the stratum in the quaternary overburden of Huashan basin(Chuzhou)obtained by slug tests are accurate and reliable,and the specific yield could be estimated at the same time.The permeability of the quaternary stratum in the basin is obviously heterogeneous.The hydraulic conductivity and specific yield in the upstream area are higher than those in the downstream area.The specific storage coefficient in the sub-basin decreases from the east to the west.

关 键 词：振荡试验 花山流域 第四系覆盖层 渗透系数 贮水率 给水度 

分 类 号：P641.2[天文地球—地质矿产勘探]