单井稳定流抽水试验确定地下水允许开采量  

Single well steady flow pumping test to determine allowable groundwater exploitation

作　　者：韩志文[1] HAN Zhi-wen(Sichuan Metallurgical Geological Exploration Institute,Chengdu 610000,China)

机构地区：[1]四川省冶金地质勘查院,四川成都610000

出　　处：《世界有色金属》2021年第4期164-166,共3页World Nonferrous Metals

摘　　要：抽水试验是掌握含水层富水性,求取含水层水文地质参数最直接的手段,水文地质参数是进行地下水资源评价及地下水流数值模拟的基础。在矿泉水资源储量核实工作中经常采用单孔无观测孔做抽水试验来求取水文地质参数(渗透系数K和影响半径R)。以自贡市大安区某矿泉水为例,利用单孔稳定流抽水试验的数据成果,绘制Q、S/t及q=f(s)关系曲线图,按承压水完整井公式计算含水层渗透系数K和影响半径R,采用直线方程式来计算该井的允许开采量。Pumping test is the most direct method to master the water rich property of aquifer and to obtain hydrogeological parameters of aquifer.Hydrogeological parameters are the basis for groundwater resource evaluation and numerical simulation of groundwater flow.In the verification of mineral water resources reserves,the hydrogeological parameters(permeability coefficient K and influence radius R)are often obtained by pumping test with single hole and no observation hole.Taking a mineral water in Daan District of Zigong City as an example,the relationship curves of Q,s/t and q=f(s)are drawn by using the data of single hole steady flow pumping test.The permeability coefficient K and influence radius r of aquifer are calculated according to the formula of the complete well of confined water,and the allowable exploitation of the well is calculated by using the linear equation.

关 键 词：水文地质参数 地下水 允许开采量 

分 类 号：P641.2[天文地球—地质矿产勘探]