Dynamic friction and the seismic performance of geosynthetic interfaces

Pavanello, P.; Carrubba, Paolo; Moraci, Nicola

doi:10.1016/j.geotexmem.2018.06.005

Cited by 13 publications

(2 citation statements)

References 44 publications

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“…The use of data sheets for design of geocomposite drains fails to recognise the effect of intrusion into synthetic drainage cores (Legge et al 2014(Legge et al , 2015, which could lead to similar unacceptably high pore water pressure and reduced stability Factor of Safety. The loss of stability may be further aggravated in designs failing to take cognisance of the site specific probability of seismic events for dams (Singh et al 2010), and the effect of dynamic displacement on geosynthetic interface shear strengths which may be greater or lesser than static state values for various seismic events (Pavanello et al 2018).…”

Section: Perceived Performance Of Geosynthetic Filters and Drains As mentioning

confidence: 99%

An economy and ecosystem symbiosis: barrier systems for water conservation and pollution control

Legge¹

2019

Proceedings of the 22nd International Conference on Paste, Thickened and Filtered Tailings

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An awareness of the rate at which water resource development took place in South Africa being supply driven, until relatively recent times, leads to an appreciation of the changing philosophy in respect of water conservation and pollution control, as well as essential amendment to principles and procedures. Reconciling water demand and supply in catchments requires concurrent consideration of available water quantity and quality. This stimulates the need for change in the way we view water uses and brings about business opportunities in the sector. The review of infrastructure designs in support of water use and mining applications for industrial and mining waste has developed and transformed along with improved technology and changes in legislation since 1994 in South Africa. A containment barrier system comprises of both filter protected drains and low permeability liners which are visible in the short term until covered. They are required to perform effectively after initial use and are often inaccessible for the operating period and subsequent service life of decades or even centuries. This paper presents a regulator's perspective of commonly repeated deviation from accepted norms and standards in the engineering profession, as applied to pollution control facilities. Emphasis is placed on the standards of today with experience reflecting on the past five years of design reviews, leading to conclusions and recommendations for facility owners and practitioners. Examples of procedure, mechanisms, performance, specifications and socioeconomic benefits are addressed. It is postulated that in the near future many mining and industrial developers will choose to improve containment standards of barrier systems as a component of reengineering water demands and for economic advantage while embracing contributions from ecosystem services.

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Section: Perceived Performance Of Geosynthetic Filters and Drains As mentioning

confidence: 99%

An economy and ecosystem symbiosis: barrier systems for water conservation and pollution control

Legge¹

2019

Proceedings of the 22nd International Conference on Paste, Thickened and Filtered Tailings

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“…Contact with different types of nonwoven polypropylene geotextiles Experimental results show that the dynamic friction in a seismic event created according to the same law as by the free sliding tests and vibration tests performed with sinusoidal base movements depends on relative velocity. In addition, for two different types of joint surfaces studied, the dynamic friction may be greater than, or equal to the static friction [10].…”

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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