A comparative study on evaluation of steady-state groundwater inflow into a circular shallow tunnel

Nikvar-Hassani, Arash; Farhadian, Hadi; Katibeh, Homayoon

doi:10.1016/j.tust.2017.11.019

Cited by 54 publications

(16 citation statements)

References 35 publications

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“…A wide range of studies have been conducted regarding risk or performance analysis on multiple watersheds, dams or tunnels all around the world with a diverse hydro-climatological regimes [25][26][27][28][29][30][31][32][33]. Anane et al (2012) carried out a study to prioritize the best locations for irrigation with treated wastewater (TWW) in Tunisia [34].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of the AHP and TOPSIS Techniques for Dam Site Selection Using GIS: A Case Study of Sistan and Baluchestan Province, Iran

et al. 2018

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The application of multiple criteria decision-making (MCDM) techniques in real-life problems has increased in recent years. The need to build advanced decision models with higher capabilities that can support decision-making in a broad spectrum of applications, promotes the integration of MCDM techniques with applicable systems, including artificial intelligence, and Geographic Information Systems (GIS). The Analytic Hierarchy Process (AHP) and Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) are among the most widely adopted MCDM techniques capable of resolving water resources challenges. A critical problem associated with water resource management is dam site selection. This paper presents a comparative analysis of TOPSIS and AHP in the context of decision-making using GIS for dam site selection. The comparison was made based on geographic and water quality criteria. The geographical criteria are geology, land use, sediment, erosion, slope, groundwater, and discharge. The water quality criteria include Soluble Sodium Percentage, Total Dissolved Solid, Potential of Hydrogen, and Electrical Conductivity of water. A ratio estimation procedure was used to determine the weights of these criteria. Both methods were applied for selection of optimal sites for dams in the Sistan and Baluchestan province, Iran. The results show that the TOPSIS method is better suited to the problem of dam site selection for this study area. Actual locations of dams constructed in the area were used to verify the results of both methods.

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Section: Introductionmentioning

confidence: 99%

A Comparative Study of the AHP and TOPSIS Techniques for Dam Site Selection Using GIS: A Case Study of Sistan and Baluchestan Province, Iran

et al. 2018

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“…A method used to predict time-dependent groundwater inflow into a metro tunnel (Liu et al 2018) b. Methods used for evaluation of steady-state groundwater inflow to a shallow circular cross-section Metro tunnel (Nikvar Hassani et al 2018) c. Impact on aquifers due to the construction of metro tunnels producing changes in the natural groundwater behaviour (Font-Capo et al 2015) d. Groundwater raising or lowering phenomenon modelling due to metro underground infrastructure (Raben-Levetzau et al 2004;Gattinoni and Scesi 2017;Colombo et al 2018) Fire and Smoke See Notes a. Ventilation aided tunnel evacuation systems to create smoke-free evacuation passageway out of the tunnels (Gao et al 2013;Liu et al 2019) b.…”

Section: Study Approach Reviewed Sourcesmentioning

confidence: 99%

Hazards threatening underground transport systems

Forero-Ortiz

Martínez‐Gomariz

2020

Nat Hazards

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Metro systems perform a significant function for millions of ridership worldwide as urban passengers rely on a secure, reliable, and accessible underground transportation way for their regular conveyance. However, hazards can restrict normal metro service and plans to develop or improve metro systems set aside some way to cope with these hazards. This paper presents a summary of the potential hazards to underground transportation systems worldwide, identifying a knowledge gap on the understanding of water-related impacts on Metro networks. This is due to the frequency and scope of geotechnical and air quality hazards, which exceed in extreme magnitude the extreme precipitation events that can influence underground transportation systems. Thus, we emphasize the importance of studying the water-related hazards in Metro systems to fill the gaps in this topic.

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“…Since most groundwater inflows are recorded in fault zones (Attanayake and Waterman, 2006;Perrochet and Dematteis, 2007;Yang et al, 2009;UNAL, 2010;Moon and Fernandez, 2010;Zarei et al, 2011;Loew et al, 2015), fractures have been represented within heterogeneous media as more permeable areas with EPM approaches (Perrochet and Dematteis, 2007;Maréchal et al, 2014;Preisig, 2013). This conceptualization has been extended to numerical modeling in order to predict groundwater inflow into tunnels (Mar´echal et al, 1999;Hu and Chen, 2008;Yang et al, 2009;Butscher et al, 2011;Chiu and Chia, 2012;Butscher, 2012;Xia et al, 2018;Golian et al, 2018;Nikvar Hassani et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Embedded Discrete Fracture Networks to Analyze Groundwater Inflows during Tunnel Drilling

et al. 2021

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Tunnels commonly go through fracture zones that used to be analyzed as an equivalent porous medium with homogeneous permeability. However, it is a rough simplification that overlooks the connection triggered by underground works in fractured massifs. This study introduces the use of synthetic discrete fracture networks (DFN) to analyze groundwater inflows through tunnel excavation in a fractured zone considering the daily advance of the drilling front. First, a hypothetical case with six different settings varying the fracture density, the fracture length, and the aperture distribution is analyzed. Each setting has about 100 iterations. DFN hydraulic properties were estimated and compared with previous DFN studies, displaying the same behavior even though the magnitude of the estimated parameters differs. As an application example, structural measurements of the Alaska fault zone in the La Linea massif (Colombia) are used to obtain the statistical parameters of the fracture length and aperture distributions to generate the DFN. Five settings varying the fracture density are built, obtaining measured and simulated groundwater inflows of the same order of magnitude. These results highlight the potential of the synthetic DFN to analyze tunnels’ effects on groundwater flow.

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A comparative study on evaluation of steady-state groundwater inflow into a circular shallow tunnel

Cited by 54 publications

References 35 publications

A Comparative Study of the AHP and TOPSIS Techniques for Dam Site Selection Using GIS: A Case Study of Sistan and Baluchestan Province, Iran

A Comparative Study of the AHP and TOPSIS Techniques for Dam Site Selection Using GIS: A Case Study of Sistan and Baluchestan Province, Iran

Hazards threatening underground transport systems

Embedded Discrete Fracture Networks to Analyze Groundwater Inflows during Tunnel Drilling

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