DEM-FDM numerical investigation on load transfer mechanism of GESC-supported embankment

Xu, Zeyu; Zhang, Ling; Peng, Bocheng; Zhou, Shuai

doi:10.1016/j.compgeo.2021.104321

Cited by 15 publications

(2 citation statements)

References 49 publications

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“…The load-carrying capacity of an ordinary stone column (OSC) installed in soft ground can be significantly reduced as it tends to bulge due to the lack of lateral pressure from the surrounding soil required to maintain its stability. A number of studis [24][25][26][27][28][29][30][31][32][33][34] have demonstrated that a full or partial geosynthetic encasement of the stone column in such cases can significantly increase its loading capacity via the added level of confinement provided by the geosynthetic. Such a technique is referred to as geosynthetic encasement stone column (GESC) and is gaining wide acceptance (Figure 9).…”

Section: Geosynthetic-encased Stone Columnmentioning

confidence: 99%

Geosynthetic Solutions for Sustainable Transportation Infrastructure Development

Yoo

2023

Sustainability

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Geosynthetic engineering has made significant advances during the past decade in the areas of manufacturing and practical applications. As a result, geosynthetics have become essential materials that facilitate construction, better improve short- and long-term performance, and reduce long-term maintenance costs in routine civil engineering projects. Geosynthetics are also being recognized as fundamental to sustainable infrastructure development as they reduce the carbon footprint generated by infrastructure development by minimizing the use of natural construction materials. Creative use of geosynthetics in geo-engineering practices is expected to continue to expand as innovative materials and products are becoming available. In this paper, we begin by discussing issues related to climate change. The sustainable benefits of geosynthetics are then presented by demonstrating the potential of geosynthetics to significantly reduce carbon footprints compared to traditional solutions. Finally, recent geosynthetic technologies have been introduced for use in transportation infrastructure. The pathway forward of the geosynthetic technology is also discussed from the view of sustainable infrastructure development.

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Section: Geosynthetic-encased Stone Columnmentioning

confidence: 99%

Geosynthetic Solutions for Sustainable Transportation Infrastructure Development

Yoo

2023

Sustainability

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“…Fault planes are often presented in the form of interface element in numerical calculations [20], and fault zones are often replaced with weak interlayer zones; however, most of actual fault zones are discontinuous fragments [21]. Numerical methods are widely used in longwall mining research, and the coupling method of finite difference method (FDM) and discrete element method (DEM) has been well used in geotechnical engineering [22][23][24][25][26]. Li et al [27] established a 3D coupling model considering both DEM and FDM, simulated ballast particles with DEM considering rolling resistance model, realized the coupling process between DEM and FDM with interface element, and verified the numerical model under impact load through field test.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of Fault Fracture Zone on Mining Response Based on FDM-DEM Coupling

et al. 2022

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Fault slip will cause a change in mining stress at the longwall face, which will cause adverse effects. In this study, on the basis of Fast Lagrangian Analysis of Continua in 3 Dimensions (FLAC3D) and Particle Flow Code in 3 Dimensions (PFC3D), the sliding of the fault fracture zone and its impact on the longwall working face were analyzed. The rock mass of the fault fracture zone with a certain thickness was constructed using rigid random model particles. The coupling between the wall element of PFC3D and the zone element of the continuous medium in the software was used to realize the transmission of force and displacement, and the interaction between the fault fracture zone and the working face was studied. The influence of the slip of different fault zone positions on the fault and working face was also explored using the method of externally disturbing the fracture zone of the fault. The numerical results showed that as the distance between the fault and the working face continued to decrease, the peak stress concentration in front of the longwall face first increased, then decreased, and gradually shifted to the vicinity of the fault zone. The stress mutation and fault slip occurred within a certain distance of the longwall face from the fault. When fault slip activation begins, the stress near the fault zone showed a sudden change of varying degrees with the advancement of the longwall face. This sudden change was caused by the influence of mining activities from the activation distance of the rock in the fault fracture zone and the rolling extrusion of the rock mass in the fracture zone. When the fault zone closer to the working face was disturbed, the influence on the fault zone and longwall face was greater. When the fault zone near the coal seam was disturbed, the rock mass and working face near the fault zone brought different degrees of dynamic responses, which were mostly instantaneous and had high frequency and amplitude. The results of this research could help in the mining of longwall mining affected by fault zones and have a certain guiding role in coal mining before crossing faults.

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An FDM–DEM coupling method for analyzing the mechanical behavior of a slope reinforced by piles

Zhang,

Li,

Zheng

et al. 2024

Environ Earth Sci

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DEM-FDM numerical investigation on load transfer mechanism of GESC-supported embankment

Cited by 15 publications

References 49 publications

Geosynthetic Solutions for Sustainable Transportation Infrastructure Development

Geosynthetic Solutions for Sustainable Transportation Infrastructure Development

Analysis of the Influence of Fault Fracture Zone on Mining Response Based on FDM-DEM Coupling

An FDM–DEM coupling method for analyzing the mechanical behavior of a slope reinforced by piles

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