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.

引用

页码：30 / 35

页数：5

共 13 条

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[2]

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