Seismic analysis of landfill considering the effect of GM-GCL interface within liner

Feng, Shi‐Jin; Chang, Ji-Yun; Chen, Hongxin

doi:10.1016/j.soildyn.2018.01.025

Cited by 25 publications

(4 citation statements)

References 29 publications

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“…In recent years, some advanced numerical approaches, such as the finite element method (FEM) and finite difference method (FDM), have been employed to investigate the response and stability of landfills during seismic activities. Using the finite element method, equivalent linear analysis has been applied in many studies to investigate the seismic response of landfills [23][24][25][26]. Yet, the equivalent linear model was considered unsuitable for cases where the acceleration exceeds 0.4 g [27].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Stability Finite Difference Time Domain Analysis of Landfill Based on Hypergravity Test

Sun,

Li,

Lin

2024

Applied Sciences

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Earthquakes impact the stability of municipal solid waste (MSW) landfills, especially those with high water levels, and may further lead to disastrous landslides. Numerical analysis offers an efficient and cost-effective way to study the seismic stability of a landfill. In this study, the finite difference nonlinear analysis method was employed to meticulously evaluate the dynamic response of landfills under varying water levels and seismic intensities. The analysis was guided by the seismic instability and centrifuge test outcomes. The rationality of the computational model was verified by examining the responses of acceleration and pore pressure. Subsequently, the time history curve of the dynamic safety factor was derived from the dynamic response of landfills. The results indicated that a landfill was more susceptible to large earthquake effects, and its stability decreased as the water level rose, with the safety factor decreasing to a critical point under the coupling effect of strong earthquakes and high water levels. In contrast, the stability of the landfill with low water levels was good under weak earthquake conditions, with only a slight decrease in the safety factor observed. The seismic stability of a landfill was significantly influenced by both accumulative deformation and negative excess pore pressure. A certain degree of hysteresis in the landfill’s instability was also observed compared to the earthquake loading process. The time history curve of the safety factor can offer a comprehensive insight into seismic stability under diverse conditions. Additionally, future research efforts are needed to better determine the values of strength parameters of MSW in seismic analysis.

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Section: Introductionmentioning

confidence: 99%

Dynamic Stability Finite Difference Time Domain Analysis of Landfill Based on Hypergravity Test

Sun,

Li,

Lin

2024

Applied Sciences

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“…Nowadays, the use of the finite element methods (FEM) (due to the complex and nonlinear nature of soil) is very important for studying the interaction of soil with various reinforcements and also for predicting the shear behavior of soil. It has also become common to use a nonlinear finite element analysis program such as ABAQUS for such simulations [13][14][15][16][17][18][19][20]. In this research, a three-dimensional simulation of the wall insulation system of a landfill is conducted (Milligate Landfill in Yorkshire, England) with accurate scaling and modeling verification with the recorded results of on-site instrumentation.…”

Section: Introductionmentioning

confidence: 99%

Performance of Solid Waste Landfills Under Earthquake-Induced Vibrations

Marghaki

Soltani

Farsangi

et al. 2022

Civil and Environmental Engineering Reports

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The stability inside the waste, internal stability, and co-stability between the elements of the insulation system and the landfill bed should be considered in the landfill design. The stresses and the resulting deformations in both mineral and geosynthetic materials of the insulation system must be controlled in the design, so that an unpredictable flow path is not created. Besides, long-term durability in the insulation system should be considered. An evaluation of the durability of the system requires knowledge of the interaction between the components and the waste as a settling object. The numerical modeling methods can be used to evaluate the local instability. In this study, a landfill constructed in the UK has been modeled in ABAQUS finite element platform and was verified with the results of obtained data from precision instruments at the landfill site. Then, by applying the earthquake excitations, the seismic behavior of the solid waste landfill under Far-Field and Near-Field earthquakes and their effect on the durability of the landfill wall system were investigated. The outputs include maximum displacement, maximum stress, the most critical state, and investigation of yield stress and rupture of the geomembrane layer. The results indicated that in the landfill wall, the maximum displacement occurs in the waste section. It occurs especially between the boundary of natural soil and waste. It was also observed that the geomembrane layer under the earthquake loadings had experienced some ruptures.

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“…Among the different material techniques employed to minimize these menaces, particularly in waste containment facilities, geosynthetic clay liners (GCLs) has proven to be an easy, flexible, and reliable material technique. This is primarily because of their low hydraulic conductivity (k w < 10 −10 m/s) [1][2][3][4]. However, under local conditions, the construction cost of using geosynthetic liner materials is exorbitant, due to the non-existence of a local industry producing such materials.…”

Section: Introductionmentioning

confidence: 99%

“…[1,22,27]. Nevertheless, the downsides associated with GCL as previously mentioned and discuss comprehensively by [1,3,28] have motivated the utilization of CSL. Consequently, the need to research and assimilate vital information on the topics above, thus addressing the knowledge gap cannot be overemphasized.…”

Section: Introductionmentioning

confidence: 99%

A critical reappraisal of residual soils as compacted soil liners

2019

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Compacted residual soils are often used as liner materials in engineered landfills, tailings dams, solar ponds, and canals, etc. to minimize the migration of contaminants into the surrounding environment and groundwater. To date, there has not been an extensive and adequate review of the suitability of different residual soil types for use as compacted liner materials. This paper reviews the suitability, merits, demerits, and possible applications of using expansive and lateritic residual soils as compacted soil liners. The review is then complemented by a study of the geotechnical properties of lateritic residual and shrinkable soils from Peninsular Malaysia. Suitability was assessed based on engineering property data for both soil types, collected from various journal papers, workshops, proceedings of conferences, and symposia from around the world. These properties were then compared with the standard requirements for use as liner materials. Descriptive statistics were employed to better assess the individual criteria of using both residual soil types as compacted soil liners. The results indicate that expansive and lateritic soils can be effectively utilized as liner materials if more acceptable materials are not readily available. The study addresses untreated soils but does not discuss the stabilization aspects.

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Seismic analysis of landfill considering the effect of GM-GCL interface within liner

Cited by 25 publications

References 29 publications

Dynamic Stability Finite Difference Time Domain Analysis of Landfill Based on Hypergravity Test

Dynamic Stability Finite Difference Time Domain Analysis of Landfill Based on Hypergravity Test

Performance of Solid Waste Landfills Under Earthquake-Induced Vibrations

A critical reappraisal of residual soils as compacted soil liners

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