Fully hydro-mechanical coupled Plug-in (SUB+) in FEFLOW for analysis of land subsidence due to groundwater extraction

Pham, Hung Tien; Rühaak, W.; Schuster, Valerian; Sass, Ingo

doi:10.1016/j.softx.2018.11.004

Cited by 16 publications

(5 citation statements)

References 10 publications

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“…A conceptual model of the groundwater aquifer was constructed by FeFlow 7.0 to simulate the movement of groundwater and solute in the aquifer with time [26]. When using the numerical simulation method to simulate groundwater flow and solute transport, it is usually necessary to generalize and assume the aquifer to a certain extent to meet the calculation of numerical simulation software: a: The model aquifer is homogeneous, and the aquifer is isotropic, that is, the hydrogeological parameters of the aquifer are consistent in the three-dimensional direction; b: Groundwater movement is dominated by horizontal movement, and this study does not consider the exchange and movement of groundwater in the vertical direction and treats groundwater movement as a two-dimensional steady flow in the diving plane, which obeys Darcy's law; c: The aquifer mainly receives lateral inflow recharge and rainfall infiltration recharge from the upper reaches of the region, and groundwater evaporation is considered during operation; the discharge method is that groundwater is discharged downstream, and the aquifer has gravity water release; d: The solutes in the model are heavy metal pollutants, and the model considers the maximum risk, ignores the adsorption-desorption and dissolution in the solute migration process, ignores the reaction and decay of the solute in the aquifer, and only considers the convective dispersion of the solute in the lateral and vertical directions.…”

Section: Ecological Health Risk Assessment Methodsmentioning

confidence: 99%

Human-Health and Environmental Risks of Heavy Metal Contamination in Soil and Groundwater at a Riverside Site, China

et al. 2022

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The contaminated site is considered a high-risk pollution source due to the accumulation of industrial waste and wastewater, which affects the soil and groundwater environment. In this study, through soil and groundwater investigation, we outlined the characteristics of heavy metal contamination in the soil and groundwater of the contaminated site, assessed the health risk of the contaminated site to humans, and established a numerical model to predict the ecological and environmental risks of the site. The results of the study showed that the maximum contamination concentration of pollutants (lead, arsenic, cadmium) in the soil all exceeded the Chinese environmental standard (GB36600-2018, Grade II), that the maximum contamination concentration (cadmium, Cd) of the groundwater exceeded the Chinese environmental standard (GB14848–2017, Grade IV), and that the heavy metal pollution was mainly concentrated in the production area of the site and the waste-residue stockpiles. The total carcinogenic risk and non-carcinogenic hazard quotient of the site's soil heavy metal contaminants exceed the human acceptable limit, and there is a human health risk. However, the groundwater in the area where the site is located is prohibited from exploitation, and there is no volatility of the contaminants and no exposure pathway to the groundwater, so there is no risk to human health. The simulation prediction results show that, with the passage of time, the site groundwater pollutants as a whole migrate from south to north, affecting the northern surface water bodies after about 12 years, and there is a high ecological and environmental risk. The above findings provide a scientific basis for the study of the soil and groundwater at the riverside contaminated site.

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Section: Ecological Health Risk Assessment Methodsmentioning

confidence: 99%

Human-Health and Environmental Risks of Heavy Metal Contamination in Soil and Groundwater at a Riverside Site, China

et al. 2022

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“…(Hernandez-marin and Burbey, 2012;Castelletto et al, 2015;Ye et al, 2016). Pham et al (2019) developed the program module SUB + based on the elastic mechanics theory of porous media, which could realize fully coupled water-stress simulation.…”

Section: Introductionmentioning

confidence: 99%

Land subsidence and its affecting factors in Cangzhou, North China Plain

Guo

Hao²,

Li³

et al. 2022

Front. Environ. Sci.

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Land subsidence is a typical geo-hazard in Cangzhou, North China Plain, having caused severe damages to transportation networks, public utilities, and other civil infrastructures. The mechanism of land subsidence and its affecting factors were revealed by theoretical model analysis, and doing geotechnical tests and monitoring of soil deformation as well as groundwater level. Theoretical analysis shows that groundwater withdrawal from both unconfined and confined aquifers can lead to land subsidence. Land subsidence of the Cangzhou Plain is mainly caused by the exploitation of deep confined groundwater. Geotechnical tests show a general trend that the compressive modulus increases with the increase of soil depth. The strata of the Upper Pleistocene and Holocene are mostly normally consolidated and partially under-consolidated, which are prone to produce large compression after pumping. Land subsidence in the Cangzhou Plain has a strong hysteresis because of seepage consolidation and creep. The deformation characteristics of strata change at different depth. The shallow aquifers are mainly elastic deformation. The area of severe land subsidence in the Cangzhou Plain is closely related to rainfall, mainly because the large amount of water are used for agricultural irrigation. InSAR results show a sudden change in regional subsidence across the Cangdong fault, which is caused by the difference in the thickness of Quaternary sediments and the difference in the deep confined groundwater level.

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“…Conversely, the significant escalation of industrial activity in coastal regions motivates the increasing groundwater extraction. Excessive groundwater extraction produces decreasing in groundwater level that leads to land subsidence [11], [12], [13]. It was observed that land subsidence occurs along the coastline in Northern Java [14].…”

Section: Introductionmentioning

confidence: 99%

Implementation of Building with Nature (BwN) as Adaptive Concept to Prevent Coastal Erosion in Demak Regency, Central Java, Indonesia

Widyaningtias¹,

Bumi²,

Adityawan³

et al. 2022

Int. J. Adv. Sci. Eng. Inf. Technol.

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North Java, Indonesia's Shoreline degradation has become a severe problem along its coast. The gradually vanishing of the mangrove greenbelt indicates starting of coastal erosion. To overcome that problem, the adaptive concept using Building with Nature (BwN) is expected to become a part of the solution by enhancing the natural process. Construction of permeable structures was started in 2013. Its implementation was modeled using Delft3D. A coupling between Delft3DFlow and Delft3DWave is proposed. The model is conducted in two scenarios, coastal areas without and with permeable structures. Both were simulated in wet and dry seasons. It is analyzed on three years morphological scale. 10 observation points were determined in the front and back of structures. Those are utilized as control points to check the height of sediment trapped. Accumulation of sediment trapped in wet and dry seasons, and the coverage area was a dry season without structures. By adding a permeable structure, the maximum amount of sediment trapped in the wet season reaches 1.52 m in three years of simulation. It can be concluded that permeable structures constructed along the coast can trap the sediment. The placement, length, and number of structures should be considered to produce a wider coverage area. In the future, the sustainability of this adaptive concept is expected to enhance the coastal restoration in Demak coastal area.

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Fully hydro-mechanical coupled Plug-in (SUB+) in FEFLOW for analysis of land subsidence due to groundwater extraction

Cited by 16 publications

References 10 publications

Human-Health and Environmental Risks of Heavy Metal Contamination in Soil and Groundwater at a Riverside Site, China

Human-Health and Environmental Risks of Heavy Metal Contamination in Soil and Groundwater at a Riverside Site, China

Land subsidence and its affecting factors in Cangzhou, North China Plain

Implementation of Building with Nature (BwN) as Adaptive Concept to Prevent Coastal Erosion in Demak Regency, Central Java, Indonesia

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