当前位置: X-MOL 学术Appl. Water Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Distribution of aquifer characteristics in different geomorphologic units in a granitic terrain
Applied Water Science ( IF 5.7 ) Pub Date : 2020-10-28 , DOI: 10.1007/s13201-020-01313-0
Ratnakar Dhakate

Knowledge of aquifer characteristics is essential for groundwater development and management studies. Detailed hydrological studies were carried out in a granitic terrain consisting of different geomorphologic units to resolve the coverage, performance, and characteristics of the aquifer parameters through the application of the pumping test method. An interpretation was performed by different methods, viz., Theis, Jacob, Hantush, and Rushton and Redshaw (numerical finite difference method) to ascertain the aquifer parameters. These parameters are vital for future groundwater development and management studies. Transmissivity (T) values estimated by Theis method range from 3.83 to 436 m2/day; 3.77 to 718 m2/day; and 16 to 160 m2/day, by Jacob method it ranges from 3.90 to 436 m2/day; 3.73 to 769 m2/day; and 17.3 to 152 m2/day, by Hantush method it ranges from 1.63 to 189 m2/day; 0.53 to 755 m2/day; and 19.3 to 118 m2/day, while by numerical method it ranges from 3 to 455 m2/day, 3 to 700 m2/day, and 17 to 148 m2/day in pediplain with moderate weathering (PPM), pediplain with shallow weathering (PPS), and buried pediplain with shallow weathering (BPPS) geomorphologic units, respectively. Similarly, a radius of influences ranges from 9.75 to 1391.0 m; 8.0 to 698.09 m, and 380.78 to 433.76 m in PPS, PPM, and BPPS geomorphologic units, respectively. The aquifer parameters obtained by the pumping tests were correlated with the structural features and different geomorphologic units. It was found that these parameters have wide variations within each geomorphologic feature. The radius of influence of each test well was calculated and compared with the in situ measured discharge of various wells within the area. The high values of transmissivity (T) are attributed to aquifer controlled by fractured zone in the area.



中文翻译:

花岗岩地形中不同地貌单元含水层特征的分布

含水层特性的知识对于地下水开发和管理研究至关重要。在由不同地貌单元组成的花岗岩地形中进行了详细的水文研究,以通过抽水试验方法解决含水层参数的覆盖范围,性能和特征。用Theis,Jacob,Hantush,Rushton和Redshaw(数值有限差分法)等不同方法进行了解释,以确定含水层参数。这些参数对于未来的地下水开发和管理研究至关重要。用Theis法估算的透射率(T)值为3.83至436m 2 /天;3.77至718 m 2 /天;和16至160 m 2/天,通过雅各布法,范围为3.90至436 m 2 /天;3.73至769 m 2 /天;和17.3 152米2 /天,通过Hantush方法它的范围从1.63到189米2 /天; 0.53至755 m 2 /天;和19.3至118 m 2 /天,而通过数值方法,范围为3至455 m 2 /天,3至700 m 2 /天和17至148 m 2/天分别在中等风化(PPM),浅风化(PPS)和埋藏式浅风化(BPPS)地貌单元中进行。同样,影响半径为9.75至1391.0 m;PPS,PPM和BPPS地貌单位分别为8.0至698.09 m和380.78至433.76 m。通过抽水试验获得的含水层参数与结构特征和不同的地貌单位相关。发现这些参数在每个地貌特征内具有很大的差异。计算每个测试井的影响半径,并将其与该区域内各个井的实测排放量进行比较。透射率(T)的高值归因于该地区裂缝带控制的含水层。

更新日期:2020-10-30
down
wechat
bug