Slug-Test Improvement Use to Hydraulic Conductivity Estimation of Unconsolidated Porous Media in Double-layer Aquifer

被引：0
作者：
Chang T.-H. [1 ]
San H.-H. [1 ]
Chiu P.-H. [2 ]
Hsu Y.-C. [1 ]
机构：
[1] Department of Civil Engineering Chung Yuan Christian University, Taiwan
[2] Department of Civil Engineering National Taiwan University, Taiwan
来源：
Taiwan Water Conservancy | 2021年 / 69卷 / 03期
关键词：
Double-layer aquifer; Hydraulic conductivity; Slug test; Unconsolidated porous media;
D O I：
10.6937/TWC.202109/PP_69(3).0004
中图分类号：
学科分类号：
摘要：
The Slug-Test has been used for the hydraulic conductivity K estimation by Bouwer and Rice (1976) in a single-layer aquifer. However, the hydraulic conductivity still needs improvement for the multi-layer aquifer. This study adopts both injection and recovery Slug-Tests incorporating to obtain the time-drawdown relationship of unconsolidated porous media in the double-layer aquifer and receives the solution of the hydraulic conductivities. Where the Newton-Raphson Method is applied to solve the simultaneous equations and calculate the hydraulic conductivities in the double-layer aquifer system. The results show that the parameters have a better calibration according to the sensitivity analysis with various ratios of transmissivity (T1/T2) of the double-layer. The Slut-Test improvement in the double-layer aquifer is applied to estimate the field hydraulic conductivity in Dong-Ju Island, where the formation of the upper aquifer is weathering sandstone and the lower aquifer is weathering granite. The results appearing correlation coefficient with R2=0.997 for injection test and R2=0.950 for recovery test. Therefore, the application reveals the factuality and practicability of the model corresponding to the field test data. © 2021,Taiwan Water Conservancy. All Rights Reserved.
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页码：30 / 35
页数：5
相关论文
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