Gas Permeability of Geosynthetic Clay Liners

Vučenović, Helena; Domitrović, Dubravko; Zelić, Biljana Kovačević

doi:10.17794/rgn.2017.1.2

Cited by 2 publications

(2 citation statements)

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“…Gas can also be produced in the case of tank corrosion. In this case, it will be necessary to determine the gas permeability of the sealing layers, including the bentonite/sand mixture (Vučenović et al, 2017a(Vučenović et al, , b, 2021.…”

Section: Top and Bottom Systems Of Protective Layersmentioning

confidence: 99%

Improved Conceptual Design of Lilw Repository

Veinović

Vučenović

Rožman³

et al. 2023

MGPB

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Given the forthcoming need for the construction of a repository for low and intermediate radioactive level waste in the Republic of Croatia, this paper proposes a repository design which is, from a geotechnical point of view, simple, practical and safe, and significantly improved considering current conceptual designs. Existing low and intermediate radioactive level waste repositories are mostly vault-type, near-surface constructions with some kind of covering (top) system of protective layers. However, most of these repositories do not have a bottom protective system, apart from concrete flooring (base). The reasons for such designs include the presumed longevity of the waste packages (containers), which are mostly reinforced concrete and/or steel containers. Considering that the concrete is a material which will, under certain conditions, deteriorate (e.g. dissolution of the cement matrix), and so potentially release radionuclides to the environment, it is essential to design the repository in such a manner that all forms of early release of radionuclides are prevented. The improved conceptual design of low and intermediate radioactive level waste repository presented in this paper is intended to provide an improved containment of radionuclides from waste and ensure the long term safety of the repository. This paper is the first in a series which will cover the basic design of the repository, systems of protective layers and preliminary slope stability analyses.

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Section: Top and Bottom Systems Of Protective Layersmentioning

confidence: 99%

Improved Conceptual Design of Lilw Repository

Veinović

Vučenović

Rožman³

et al. 2023

MGPB

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“…Hence, it is required to take into consideration hydroscopic property and gas permeability of the rocks [31], available dense clay bands in a seam roof, plicative and disjunctive geological disturbances within the gasification zone; caving features of the basic roof and stability of the immediate roof under the effect of high temperatures, and bearing capacity of a floor [9,32].…”

Section: Qualitative Indices Of Blowing Mixture and Generator Gasmentioning

confidence: 99%

Characteristic of Possible Obtained Products during the well Underground Coal Gasification

Dychkovskyi

Shavarskyi

Cabana

et al. 2019

SSP

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This article is a summarizing of the results of the author's team on the establishment of technological parameters of underground gasification. It provides a justification of the final chemical and energy products that can be obtained as a result of complex physical and chemical transformations of coal. The thermodynamic processes of formation of the gasification source when changing the composition of the blast furnace mixture and the modes of its application to the georeactor are considered. Moreover, the change in the stress-strain state of rocks depending on the composition of the lateral rocks is taken into account. To better ensure the results are consistent with the well-known principles of thermodynamics and phase formation under the influence of the temperature field and the main chemical reactions occurring in complex gasification processes are presented. The main phase transitions in the georeactor are given for the maximum reception of different energy gases. Particular attention is given to the formation of an appropriate relationship between hydrogen and carbon monoxide, which form a synthesis gas. The Anderson-Schultz-Flory reaction is used to determine the maximum CO concentration in the outlet mixture. In general, the system for determining the material and thermal balance is proposed. These approaches were checked both for working out the coal reserves and for utilization of the mining waste products. Results of this investigation were included to the Roman Dychkovskyi thesis of the scientific degree of the Doctor of the Technique Sciences “Scientific Principles of Technologies Combination for Coal Mining in Weakly Metamorphoses Rockmass”. Also, this results were partially presented on international scientific and practical conferences “Forum of Miners” from different years. They contain the researches, which were conducted within the project GP – 489, financed by Ministry of Education and Science of Ukraine.

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Gas Permeability of Geosynthetic Clay Liners

Cited by 2 publications

References 0 publications

Improved Conceptual Design of Lilw Repository

Improved Conceptual Design of Lilw Repository

Characteristic of Possible Obtained Products during the well Underground Coal Gasification

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