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Delineation of aquifer potential zones using hydraulic parameters in Gombe and environs North-Eastern Nigeria

机译：使用水力参数在尼日利亚东北部的冈贝和周围地区划定含水层的潜在区

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This research is aimed at delineating the groundwater potential zones in Gombe and environs using Dar Zarrouk parameters. The study area is located within longitudes 11°7′0″E to 11°14′0″E, and latitudes 10°15′0″N to 10°21′0″N, it is basically underlain by basement Complex rocks represented by Diorite and Granites, and Cretaceous sedimentary rocks represented by Bima, Yolde, Fika and Gombe Formations. Thirty two (32) vertical electric soundings (VES) using Schlumberger array method with the aid of ABEM Signal Averaging System (SAS) Terrameter was used for the data acquisition. The result of the interpretation shows four to six geo-electric layers. The geo-electric section revealed the major aquifers to be confined and semi confined and consist of Medium grain sandstones, with varying thicknesses. The aquifer hydraulic characteristics indicated that the transverse resistance, ranges from 235.2Ωm2 to 6317.87Ωm2 with an average value of 1789.50Ωm2. The Longitudinal conductance, S, ranges from 0.1415Ωm to 31.933Ωm with an average of 2.002Ωm. The Hydraulic conductivity value range from 2.62m/day to 138.66 m/day with a mean value of 20.662 m/day. The transmissivity values obtained for the various layers range from 78.34 m2/day to 13284.02m2/day, with the average value been 893.57 m2/day. Four groundwater potential zones were delineated including medium grain sandstones, Sandstones, clayey sand and shaly sand.
机译：这项研究旨在使用Dar Zarrouk参数描绘贡贝和周围地区的地下水潜在地带。研究区域位于经度11°7′0″ E至11°14′0″ E，纬度10°15′0″ N至10°21′0″ N之内，基本上被基底所代表由迪奥利岩和花岗岩组成，以及由比马，约尔德，菲卡和贡贝组成的白垩纪沉积岩。使用Schlumberger阵列方法并借助ABEM信号平均系统（SAS）地形计的三十二（32）个垂直电测深（VES）用于数据采集。解释的结果显示了四到六个地电层。地电部分显示，主要含水层是密闭的和半密闭的，由中等厚度的砂岩组成，厚度各不相同。含水层的水力特性表明，其横向阻力范围为235.2Ωm 2 至6317.87Ωm 2 ，平均值为1789.50Ωm 2 。纵向电导S的范围为0.1415Ωm至31.933Ωm，平均为2.002Ωm。水力传导率值的范围为2.62m /天至138.66m /天，平均值为20.662m /天。各个层获得的透射率值介于78.34 m 2 /天至13284.02m 2 /天，平均值为893.57 m 2 /天。划定了四个地下水潜在区，包括中粒砂岩，砂岩，黏土砂和泥质砂。

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