KFU. Card publication. Drawdown of Urban Drain Trenches Triggering 2-D Transient Seepage in Soil Massifs Subject to Managed Aquifer Discharge: Sandbox Experiments, Analytical and HYDRUS2D Modeling

- RUS
- 中文
- ES

DRAWDOWN OF URBAN DRAIN TRENCHES TRIGGERING 2-D TRANSIENT SEEPAGE IN SOIL MASSIFS SUBJECT TO MANAGED AQUIFER DISCHARGE: SANDBOX EXPERIMENTS, ANALYTICAL AND HYDRUS2D MODELING

Form of presentation

Articles in international journals and collections

Year of publication

2022

��

��

Authors, employees of KFU

Obnosov Yuriy Viktorovich, author

Other authors

Al-Maktoumi Ali , author

Al-Yaqoubi Shahad , author

Kacimov Anvar Rashidovich, author

Bibliographic description in the original language

Shahad A Al-Yaqoubi, Ali Al-Maktoumi, Yurii Obnosov, Anvar Kacimov, Drawdown of Urban Drain Trenches Triggering 2-D Transient Seepage in Soil Massifs Subject to Managed Aquifer Discharge: Sandbox Experiments, Analytical and HYDRUS2D Modeling. Urban Water Journal, Taylor & Francis , DOI: https://doi.org/10.1080/1573062X.2021.1999989 .(WoS IF=2.081, Q3, Scopus IF=2.675, Q1)

Annotation

Managed Aquifer Discharge (MAD) through trenches lowers the water table of 'shallow perched aquifers' in urban areas (Muscat-Oman). Drawdown of the water table in periodic trenches or a single trench is experimentally studied in a sandbox, and modelled numerically (by HYDRUS2D) and analytically. Evaluation of transient flow fields of pore pressure and hydraulic gradients is necessary for assessing the stability of trench slopes to seepage-induced erosion. A controlled emptying of trench's water level is examined. An analytical solution is obtained for an unconfined seepage at an early stage of drainage. Numerical simulations are conducted for early and late stages of seepage towards a partially filled trench in soils with capillarity. For a steady-state Darcian flow limit, comparisons of HYDRUS results with the Charny analytical formula for capillarity-free soils are done. The flow rates, isobars, isotachs and streamlines are determined, with assessment of zones of high hydraulic gradients susceptible to seepage erosion.

Keywords

boundary-value problem and the keldysh-sedov formula, complex potential-conformal mappings, HYDRUS2D simulations, isobars-isohumes-isotachs-streamlines, sandbox drawdown experiments, Urban drainage by trenches

The name of the journal

Urban Water Journal

URL

https://doi.org/10.1080/1573062X.2021.1999989

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=261930&p_lang=2

Resource files

File name	Size (MB)	Format
F_UWJ2022.jpg	0,11	jpg	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Obnosov Yuriy Viktorovich	ru_RU
dc.contributor.author	Al-Maktoumi Ali	ru_RU
dc.contributor.author	Al-Yaqoubi Shahad	ru_RU
dc.contributor.author	Kacimov Anvar Rashidovich	ru_RU
dc.date.accessioned	2022-01-01T00:00:00Z	ru_RU
dc.date.available	2022-01-01T00:00:00Z	ru_RU
dc.date.issued	2022	ru_RU
dc.identifier.citation	Shahad A Al-Yaqoubi, Ali Al-Maktoumi, Yurii Obnosov, Anvar Kacimov, Drawdown of Urban Drain Trenches Triggering 2-D Transient Seepage in Soil Massifs Subject to Managed Aquifer Discharge: Sandbox Experiments, Analytical and HYDRUS2D Modeling. Urban Water Journal, Taylor & Francis , DOI: https://doi.org/10.1080/1573062X.2021.1999989 .(WoS IF=2.081, Q3, Scopus IF=2.675, Q1)	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=261930&p_lang=2	ru_RU
dc.description.abstract	Urban Water Journal	ru_RU
dc.description.abstract	Managed Aquifer Discharge (MAD) through trenches lowers the water table of 'shallow perched aquifers' in urban areas (Muscat-Oman). Drawdown of the water table in periodic trenches or a single trench is experimentally studied in a sandbox, and modelled numerically (by HYDRUS2D) and analytically. Evaluation of transient flow fields of pore pressure and hydraulic gradients is necessary for assessing the stability of trench slopes to seepage-induced erosion. A controlled emptying of trench's water level is examined. An analytical solution is obtained for an unconfined seepage at an early stage of drainage. Numerical simulations are conducted for early and late stages of seepage towards a partially filled trench in soils with capillarity. For a steady-state Darcian flow limit, comparisons of HYDRUS results with the Charny analytical formula for capillarity-free soils are done. The flow rates, isobars, isotachs and streamlines are determined, with assessment of zones of high hydraulic gradients susceptible to seepage erosion.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	boundary-value problem and the keldysh-sedov formula	ru_RU
dc.subject	complex potential-conformal mappings	ru_RU
dc.subject	HYDRUS2D simulations	ru_RU
dc.subject	isobars-isohumes-isotachs-streamlines	ru_RU
dc.subject	sandbox drawdown experiments	ru_RU
dc.subject	Urban drainage by trenches	ru_RU
dc.title	Drawdown of Urban Drain Trenches Triggering 2-D Transient Seepage in Soil Massifs Subject to Managed Aquifer Discharge: Sandbox Experiments, Analytical and HYDRUS2D Modeling	ru_RU
dc.type	Articles in international journals and collections	ru_RU