Numerical analysis of earthquake-induced deformation of liner system of typical canyon landfill

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

doi:10.1016/j.soildyn.2018.10.006

Cited by 24 publications

(7 citation statements)

References 48 publications

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“…Slope instability caused by rising internal landfill temperatures has been reported (Jafari et al, 2014; Stark et al, 2010). However, the slope stability (SS) calculation method that considers temperature requires improvement (Feng et al, 2019; Stark et al, 2010). Research efforts include two aspects: (a) strengthening experimental studies on the change of solid waste (SW) shear strength caused by temperature changes; and (b) improving the existing circular slide method (CSM) for SS calculation to consider the influence of temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of elevated temperature on solid waste shear strength and landfill slope stability

Shi

Shu

et al. 2020

Waste Manag Res

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Slope instability occurs in landfills owing to increased internal temperatures. However, strength characteristic tests for solid waste (SW) and landfill slope stability (SS) calculations that consider temperature variations are scarce in the literature. In this study, we conducted triaxial tests on SW under a range of temperature conditions and proposed the circular slide method (CSM) for calculating SS in consideration of temperature effects. SW cohesion decreased linearly with increasing temperature, whereas the internal friction angle remained essentially unchanged. Our results showed that higher temperatures reduced the SW shear strength, changing the most dangerous sliding arc away from the slope toe. The landfill slope safety factor decreased by more than 20% with an increase of the maximum temperature from 20°C to 50°C. Reduction of the leachate level (LL) led to a decrease in the landfill high-temperature zone and the safety factor increased according to LL and temperature distribution. If cooling pipes are used to control the SW temperature, we recommend arranging the cooling pipes on the landfill liner. The proposed CSM can be used to analyse landfill SS.

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Section: Introductionmentioning

confidence: 99%

Effect of elevated temperature on solid waste shear strength and landfill slope stability

Shi

Shu

et al. 2020

Waste Manag Res

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“…-poor structural condition of the buildings, -lack of periodical building safety reports, -lack of administrators attention when poor technological conditions were reported, -improper exploitation of the structure [4]. The database of failures and disasters is a valuable source of information on the technical condition and construction material quality used for construction, but more importantly it gives information on the elimination of any future potential failures during the investment process.…”

Section: Disasters and Construction Failuresmentioning

confidence: 99%

“…Structures with a high risk posed on safety are undoubtedly waste landfills. Municipal solid waste (MSW) landfills are geo-structures whose safety and serviceability are directly related to environmental and public health [4,5]. To store wastes and preclude the migration of leachates into the natural environment, engineered MSW landfills are sealed with liner systems, commonly designed accordingly to the "multibarrier" concept [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of failure in landfill construction elements

et al. 2019

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The paper presents issues related to the failure of construction elements on landfills. The study investigates threats deriving from landfills, which are the result of emergency events. It reviews landfill failures of different types, showing how they may affect the natural environment, human health and safety. The research is aimed at identifying the causes of these events and at presenting the schedule of remedial works and methods of removing the effects of failures occurring in a selected landfill. Based on the analysis, the use of the geophysical testing method to identify the origin and extent of the failure has been demonstrated as a method crucial for the design of repair works.

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“…In order to study the impact of earthquakes on landfill stability, Matasovic et al (1994) investigated 22 landfills in the Los Angeles area during the 1994 Northridge earthquake and found that the liner geosynthetic material in the landfill had cracks. Feng et al (2019) proposed a numerical model to analyse the earthquake-induced deformation of the liner system with a full consideration of the dynamic landfill–liner–foundation interactions. The above valuable researches mainly focused on the investigation of the slope instability modes of MSW landfills in one certain region or country.…”

Section: Introductionmentioning

confidence: 99%

Global study on slope instability modes based on 62 municipal solid waste landfills

et al. 2020

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This study summarized global examples of landfill slope instability over the past 40 years, then selected 62 cases from 22 different counties to analyse the primary factors causing landfill instability. Three slope instability modes in landfill were categorized according to the position of the slip surface: (1) slip surfaces generated inside the waste pile; (2) slip surfaces that pass through the foundation soil; and (3) slip surfaces that occur along the interface between the bottom liner and the municipal solid waste (MSW) pile. These three types of slope instability modes account for 69.4%, 19.32% and 11.28% of all slope instability, respectively. Moreover, five primary causes of landfill instability were identified. A high landfill leachate level was the dominant cause, accounting for 40.32% of cases. This was followed by inadequate compaction of MSW, which accounted for 22.58% of cases, and insufficiently bearing capacity of the foundation, which accounted for 19.35% of cases. Moreover, low shear strength of the liner–MSW interface and rapid release or deflagration of landfill gas were critical factors affecting landfill stability. Factors of safety were calculated using GeoStudio software for selected landfills in China (Maoershan and Xiaping) and Sri Lanka (Meethotamulla). Results from this study are expected to contribute to the prevention and control of landfill failure.

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Numerical analysis of earthquake-induced deformation of liner system of typical canyon landfill

Cited by 24 publications

References 48 publications

Effect of elevated temperature on solid waste shear strength and landfill slope stability

Effect of elevated temperature on solid waste shear strength and landfill slope stability

Analysis of failure in landfill construction elements

Global study on slope instability modes based on 62 municipal solid waste landfills

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