Deformations and ground temperatures at a road embankment in northern Canada

BatenipourHamid,; Alfaro, Marolo C.; KurzDavid,; GrahamJim,

doi:10.1139/cgj-2012-0425

Cited by 77 publications

(15 citation statements)

References 16 publications

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“…Therefore, the freezing model of saturated coarse-grained soil in a closed system cannot be influenced by the properties of the soil. Furthermore, it can be seen that Equation 14is highly similar to the Clapeyron equation as shown in Equation (15). The Clapeyron equation can be applied to any pure substances at the state of the phase transition equilibrium.…”

Section: Freezing Model Of Saturated Coarse-grained Soilmentioning

confidence: 89%

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The Formation Mechanism and Influence Factors of Highway Waterfall Ice: A Preliminary Study

et al. 2019

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Highway waterfall ice hazards usually happen in cold regions. However, minimal research has addressed this so far due to its multidisciplinary nature. In this study, ground water monitoring tests were conducted for 2.5 years to study the relationship between ground water level changes and waterfall ice hazards. To explore the internal factors that lead to highway waterfall ice, gradation tests, penetration tests, and freezing tests were conducted which revealed that coarse-grained particles can enhance the permeability of aquifers. Further, volume expansion of free water freezing in a closed system is the main reason for pore pressure increasing aquifers in research areas. Furthermore, to understand the formation mechanism of highway waterfall ice further, a mathematical model of saturated coarse-grained soil at the state of phase transition equilibrium was obtained. This indicates that the essence of the aquifers’ freezing (coarse-grained soil) in the waterfall ice area is the freezing of closed water. Finally, based on the abovementioned findings, the formation process of waterfall ice is defined as three stages: The drainage obstruction stage, the soil deformation stage, and the groundwater gushing stage, respectively. This definition can provide significant guidance on further research that focuses on prevention of highway waterfall hazards.

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Section: Freezing Model Of Saturated Coarse-grained Soilmentioning

confidence: 89%

“…All of these viewpoints are reasonable, and the main reason for the difference is that the research purposes of these studies are different, and, in addition, the location of the research is different. However, there are insufficient systematic studies on the micro-formation mechanism of waterfall ice [15].…”

Section: Introductionmentioning

confidence: 99%

The Formation Mechanism and Influence Factors of Highway Waterfall Ice: A Preliminary Study

et al. 2019

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“…The impact of temperature change on peak shear strength parameters has been investigated by a number of researchers (Batenipour et al, 2014;de Groot et al, 2015;Yavari et al, 2016;Ng et al, 2017). The in uence of this factor on various other parameters, such as consolidation properties, for example, was also a subject of some studies (Tsutsumi and Tanaka, 2012;Dalla Santa et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, the reliability implications associated with possible temperature impact on soil shear strength have been of most concern, for various reasons and under different conditions. Batenipour et al (2014) performed triaxial tests at the temperatures of 3°C and 21°C to verify whether tests at normal laboratory conditions (21°C) can be applicable to those in cold climate regions with average temperature of 3°C. It was concluded that the friction angle did not vary with the temperature, con rming the earlier ndings of Graham et al (2001).…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature on the residual shear strength of fine grained soil

Witowski

Bogusz

2021

Preprint

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The impact of low-range temperature variation on the residual shear strength parameters has been investigated. For this purpose, a standard ring shear apparatus has been subjected to low-cost modifications and equipped with thermoelectric temperature control system constructed in-house. This allowed to conduct a series of tests for clay samples at temperatures of 5°C and 20°C, which is a typical range of variation for thermo-active structures during heat extraction. In order to distinguish the impact of temperature from the natural variability of the soil samples, additional temperature changes during shearing were performed, after residual strength had been reached. The obtained results revealed an observable impact of the temperature change on the residual shear strength of tested clay; however, the variance has been close to the resolution of the measurement sensor and within the range comparable to the natural variability of fine-grained soils. Therefore, low-range temperature changes can be considered as negligible in regard to the residual shear strength parameters.

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“…Groundwater flow paths and fluxes can be highly controlled by permafrost thaw (Walvoord et al ). Current and projected permafrost degradation under highway embankments, and other infrastructure projects, is also a continuing problem (Batenipour et al ; Flynn et al ; Mu et al ; Kurz et al ). A warming of approximately 0.3 °C per decade of the shallow permafrost in the northern and central Mackenzie region of the Northwest Territories (NWT) has taken place since the 1980s, which is tied to an increase in the mean annual air temperature (Beilman and Robinson ; Smith et al ).…”

Section: Introductionmentioning

confidence: 99%

Transient and Transition Factors in Modeling Permafrost Thaw and Groundwater Flow

Langford

Schincariol²,

Nagare³

et al. 2019

Groundwater

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Permafrost covers approximately 24% of the Northern Hemisphere, and much of it is degrading, which causes infrastructure failures and ecosystem transitions. Understanding groundwater and heat flow processes in permafrost environments is challenging due to spatially and temporarily varying hydraulic connections between water above and below the near‐surface discontinuous frozen zone. To characterize the transitional period of permafrost degradation, a three‐dimensional model of a permafrost plateau that includes the supra‐permafrost zone and surrounding wetlands was developed. The model is based on the Scotty Creek basin in the Northwest Territories, Canada. FEFLOW groundwater flow and heat transport modeling software is used in conjunction with the piFreeze plug‐in, to account for phase changes between ice and water. The Simultaneous Heat and Water (SHAW) flow model is used to calculate ground temperatures and surface water balance, which are then used as FEFLOW boundary conditions. As simulating actual permafrost evolution would require hundreds of years of climate variations over an evolving landscape, whose geomorphic features are unknown, methodologies for developing permafrost initial conditions for transient simulations were investigated. It was found that a model initialized with a transient spin‐up methodology, that includes an unfrozen layer between the permafrost table and ground surface, yields better results than with steady‐state permafrost initial conditions. This study also demonstrates the critical role that variations in land surface and permafrost table microtopography, along with talik development, play in permafrost degradation. Modeling permafrost dynamics will allow for the testing of remedial measures to stabilize permafrost in high value infrastructure environments.

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Deformations and ground temperatures at a road embankment in northern Canada

Cited by 77 publications

References 16 publications

The Formation Mechanism and Influence Factors of Highway Waterfall Ice: A Preliminary Study

The Formation Mechanism and Influence Factors of Highway Waterfall Ice: A Preliminary Study

Effect of temperature on the residual shear strength of fine grained soil

Transient and Transition Factors in Modeling Permafrost Thaw and Groundwater Flow

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