摘要
本文探讨了利用电测深的视电阻率(ρ_2)参数及含水层的电阻率(ρ)求取渗透系数(K)等水文地质参数问题。文中介绍了南京东郊水源地,根据抽水试验计算的渗透系数(K)与含水标志层的电阻率进行回归分析,共设计了五种回归模型,回归系数以最小二乘法实现估算。结果表明,K与Ps的相关关系以指数函数的回归模型为最好,其相关系数为0.78。据此,绘制了含水层渗透系数等值分布图,用以评价该地区的水文地质条件,经与勘探抽水试验成果对比,证明这种方法是有实际应用价值。
The paper probes into the subject of acquiring the coefficient of permeability (K) and other hydrogeological parameters from the apparent resistivity parameter (ρs ) by electrical sounding and resistivity (ρ ) of the aquifer.
In the article, the authors make a brief description of the Nanjing eastern suburban water-source site. According to the coefficient of per-meability(K)calculated from the pumping test and the resistivity of the water -bearing marker bed, a regression analysis is made. Five kinds of regressive models have been designed for selection. The regressive coefficient is estimated by the least square method, and calculated on the PC-1500 computer. The result demonstrates the best regression model of the correlative relation between K and ρs is that of exponential function, and the correlation coefficient is 0.78. On this basis the permeabilty coefficient Isoline map has been prepared to evaluate the hydrogeological conditions of the studied area. In comparison with results of the pumping test, it is proved that the data is of practical sigrificance.
出处
《中国岩溶》
CAS
CSCD
北大核心
1989年第4期322-327,共6页
Carsologica Sinica
