干旱区生态环境知识资源中心(Arid): Effect of reservoir geometry on functionality of recharge dams influenced by sedimentation: case study of the Meymand recharge dam

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DOI	10.1007/s12517-021-06903-z
	Effect of reservoir geometry on functionality of recharge dams influenced by sedimentation: case study of the Meymand recharge dam
	Mohammadzadeh-Habili, Jahanshir; Soltani, Maryam; Khalili, Davar
通讯作者	Mohammadzadeh-Habili, J (corresponding author), Shiraz Univ, Dept Water Engn, Coll Agr, Shiraz 7144165186, Iran.
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2021
卷号	14 期号:6
英文摘要	In the present study, influence of reservoir geometry on sedimentation pattern and functionality of the Meymand recharge dam, located in a semi-arid region in southern Iran, is studied. After 7 years of dam operation and sedimentation, the reservoir functionality was evaluated during 2018-2019 water year, which discharged similar to 813700 m(3) of floodwater into the reservoir. Field measurements supported by isotope and hydro-chemical tracing indicated that most of inflow floodwater (94%) recharged the aquifer through the reservoir bed, resulting in similar to 33.63-m groundwater table rise in the downstream aquifer. Based on field mapping, accumulated sediments on reservoir bed covered only similar to 9.3% of reservoir surface area. Numerical simulation using Seep2D revealed that due to very low permeability, accumulated sediments acted as a barrier against recharge from reservoir bed. Therefore, only permeability of similar to 9.3% of the Meymand reservoir surface area was influenced by sedimentation and the rest of the reservoir surface area (similar to 90.7%) was not influenced by sedimentation. The V-shaped cross-sectional of the Meymand reservoir was instrumental in the formation of the minimal sedimentation coverage area, which consequently resulted in increased reservoir recharge efficiency. Because during dry periods, accumulated sediments on slopping sidewalls of reservoir bed are easily washed out and transported to the lowest area in reservoir bed for settlement. So, V-shaped alluvial valleys are suggested as suitable sites for recharge dams, which should be considered in new artificial recharge projects.
英文关键词	Reservoir sedimentation Recharge dam Aquifer Isotope tracing Bed permeability Groundwater table
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000629642900008
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349547
作者单位	[Mohammadzadeh-Habili, Jahanshir; Soltani, Maryam; Khalili, Davar] Shiraz Univ, Dept Water Engn, Coll Agr, Shiraz 7144165186, Iran
推荐引用方式 GB/T 7714	Mohammadzadeh-Habili, Jahanshir,Soltani, Maryam,Khalili, Davar. Effect of reservoir geometry on functionality of recharge dams influenced by sedimentation: case study of the Meymand recharge dam[J],2021,14(6).
APA	Mohammadzadeh-Habili, Jahanshir,Soltani, Maryam,&Khalili, Davar.(2021).Effect of reservoir geometry on functionality of recharge dams influenced by sedimentation: case study of the Meymand recharge dam.ARABIAN JOURNAL OF GEOSCIENCES,14(6).
MLA	Mohammadzadeh-Habili, Jahanshir,et al."Effect of reservoir geometry on functionality of recharge dams influenced by sedimentation: case study of the Meymand recharge dam".ARABIAN JOURNAL OF GEOSCIENCES 14.6(2021).