地下水流动对砷迁移的影响: 大同盆地试验场的观测与模拟

余倩; 谢先军; 马瑞; 吴亚; 李俊霞; 王焰新

doi:10.3799/dqkx.2013.086

Volume 38 Issue 4

Jul. 2013

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Article Navigation > Earth Science > 2013 > 38(4): 877-886

YU Qian, XIE Xian-jun, MA Rui, WU Ya, LI Jun-xia, WANG Yan-xin, 2013. Impact of Groundwater Flow on Arsenic Transport: A Field Observation and Simulation in Datong Basin. Earth Science, 38(4): 877-886. doi: 10.3799/dqkx.2013.086

Citation:

YU Qian, XIE Xian-jun, MA Rui, WU Ya, LI Jun-xia, WANG Yan-xin, 2013. Impact of Groundwater Flow on Arsenic Transport: A Field Observation and Simulation in Datong Basin. Earth Science, 38(4): 877-886. doi: 10.3799/dqkx.2013.086

Citation:

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Impact of Groundwater Flow on Arsenic Transport: A Field Observation and Simulation in Datong Basin

doi: 10.3799/dqkx.2013.086

YU Qian^{1, 2
,},
XIE Xian-jun^{1, 2},
MA Rui^{1, 2},
WU Ya^{1, 2},
LI Jun-xia^{1, 2},
WANG Yan-xin^{1, 2
,
,}

1.
School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
2.
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China

Received Date: 2012-11-02
Publish Date: 2013-07-01

Abstract

Abstract

Groundwater flow patterns often play an important role in controlling groundwater hydrogeochemical characteristics. To better understanding of hydrological influences on arsenic transport in groundwater of Datong basin, a transient three dimensional groundwater flow model of riparian zone was conducted based on the monitoring data of Shanyin field site. The model indicates that irrigation diminishes the groundwater depth and horizontal groundwater flow velocities and further accelerates the groundwater flux among different formations. Vertical water exchanges occur frequently among silt layers (L1, L2, L3, L4), clay1 layer (L5) and sand1 layer (L6), while among clay2 layer (L7), sand2 layer (L8), clay3 layer (L9) and sand3 layer (L10), the horizontal groundwater exchanges dominates. The model also presents a possible phenomenon that the vertical infiltration of irrigation water and precipitation from ground surface toward aquifer induces a downward movement of arsenic of vadoze zone sediments, and frequent groundwater exchange greatly promotes the horizontal migration of arsenic in aquifers.
- groundwater flow,
- arsenic,
- Shanyin field site,
- Datong basin

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References(31)

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