越流含水层系统中渗透系数随深度衰减的抽水试验解析模型

樊娟; 侯恩科; 靳德武; 刘英锋; 田干; 施文光; 王全荣

doi:10.3799/dqkx.2023.074

Volume 49 Issue 6

Jun. 2024

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Article Navigation > Earth Science > 2024 > 49(6): 2148-2157

Fan Juan, Hou Enke, Jin Dewu, Liu Yingfeng, Tian Gan, Shi Wenguang, Wang Quanrong, 2024. Analytical Model of Pumping Tests with Depth-Dependent Hydraulic Conductivity in Leakage Aquifer System. Earth Science, 49(6): 2148-2157. doi: 10.3799/dqkx.2023.074

Citation:

Fan Juan, Hou Enke, Jin Dewu, Liu Yingfeng, Tian Gan, Shi Wenguang, Wang Quanrong, 2024. Analytical Model of Pumping Tests with Depth-Dependent Hydraulic Conductivity in Leakage Aquifer System. Earth Science, 49(6): 2148-2157. doi: 10.3799/dqkx.2023.074

Citation:

Fan Juan, Hou Enke, Jin Dewu, Liu Yingfeng, Tian Gan, Shi Wenguang, Wang Quanrong, 2024. Analytical Model of Pumping Tests with Depth-Dependent Hydraulic Conductivity in Leakage Aquifer System. Earth Science, 49(6): 2148-2157. doi: 10.3799/dqkx.2023.074

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Analytical Model of Pumping Tests with Depth-Dependent Hydraulic Conductivity in Leakage Aquifer System

doi: 10.3799/dqkx.2023.074

Fan Juan^{1, 2, 3
,
,},
Hou Enke^{1
,
,},
Jin Dewu^{2, 3},
Liu Yingfeng^{2, 3},
Tian Gan^{2, 3},
Shi Wenguang⁴,
Wang Quanrong⁴

1.
College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, China
2.
Xi'an Research Institute (Group) Co., Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China
3.
Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Hazard, Xi'an 710077, China
4.
School of Environmental Studies, China University of Geosciences, Wuhan 430078, China

Received Date: 2022-11-26
Available Online: 2024-07-11
Publish Date: 2024-06-25

Abstract

Abstract

The traditional pumping test model typically assumes that the aquifer is a constant, whereas the actual aquifer frequently exhibits depth-dependent hydraulic conductivity due to geological effects and other factors. In this paper, it develops a mathematical model of pumping tests that takes into account leakage, wellbore storage effect, and depth-dependent hydraulic conductivity, and solves the semi-analytical solution, where the depth-dependent hydraulic conductivity represented by an exponential function. The results show that: the greater the attenuation coefficient (A) of depth-dependent hydraulic conductivity, the greater the drawdown in the wellbore and the greater the range of landing funnel caused by pumping. When the hydraulic conductivity decays with depth, the location of the well screen has a significant impact on the pumping test results, the drawdown at the wellbore with the well screen at the upper aquifer location is smaller than the drawdown at the wellbore with the well screen at the lower aquifer location; the estimated hydraulic conductivity is an approximation of the depth-decaying hydraulic conductivity based on drawdown at the wellbore by traditional pumping test model.
- pumping test,
- numerical modeling,
- hydraulic conductivity,
- leakage,
- hydrogeology

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References(42)

References

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Analytical Model of Pumping Tests with Depth-Dependent Hydraulic Conductivity in Leakage Aquifer System

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