Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled Model

In the deep geological repository of nuclear waste, the corrosion of waste generates gas, which increases the storage pressure, changes the properties of the rock strata, and affects the stability of nuclear waste repository. Therefore, it is of great importance to understand the gas migration in th...

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Main Authors:	Yi Xue, Faning Dang, Fang Shi, Rongjian Li, Zhengzheng Cao
Format:	Article
Language:	English
Published:	Hindawi Limited 2018-01-01
Series:	Science and Technology of Nuclear Installations
Online Access:	http://dx.doi.org/10.1155/2018/2973279

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spelling	doaj-c93f7a0649954dc988b4bbdc00bb4e3a2020-11-24T21:23:49ZengHindawi LimitedScience and Technology of Nuclear Installations1687-60751687-60832018-01-01201810.1155/2018/29732792973279Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled ModelYi Xue0Faning Dang1Fang Shi2Rongjian Li3Zhengzheng Cao4State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, ChinaState Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, ChinaJiangsu Key Laboratory of Advanced Manufacturing Technology, Huaiyin Institute of Technology, Huai’an, Jiangsu 223003, ChinaState Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi’an University of Technology, Xi’an 710048, ChinaSchool of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, ChinaIn the deep geological repository of nuclear waste, the corrosion of waste generates gas, which increases the storage pressure, changes the properties of the rock strata, and affects the stability of nuclear waste repository. Therefore, it is of great importance to understand the gas migration in the engineering barrier and the potential impact on its integrity for the safety assessment of nuclear waste repository. A hydro-mechanical-damage model for analyzing gas migration in sedimentary rocks is established in this paper. On the basis of which, a set of coupled formulas for the coupling of gas migration in rock mass is established. The model considers the characteristics of gas migration in sedimentary rock, especially the microcracks caused by the degradation of elastic modulus and damage, and the coupling between the rock deformation and failure of fractures. The numerical simulation of gas injection test is beneficial to understand the mechanism of gas migration process in sedimentary rock.http://dx.doi.org/10.1155/2018/2973279
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Yi Xue Faning Dang Fang Shi Rongjian Li Zhengzheng Cao
spellingShingle	Yi Xue Faning Dang Fang Shi Rongjian Li Zhengzheng Cao Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled Model Science and Technology of Nuclear Installations
author_facet	Yi Xue Faning Dang Fang Shi Rongjian Li Zhengzheng Cao
author_sort	Yi Xue
title	Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled Model
title_short	Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled Model
title_full	Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled Model
title_fullStr	Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled Model
title_full_unstemmed	Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled Model
title_sort	evaluation of gas migration and rock damage characteristics for underground nuclear waste storage based on a coupled model
publisher	Hindawi Limited
series	Science and Technology of Nuclear Installations
issn	1687-6075 1687-6083
publishDate	2018-01-01
description	In the deep geological repository of nuclear waste, the corrosion of waste generates gas, which increases the storage pressure, changes the properties of the rock strata, and affects the stability of nuclear waste repository. Therefore, it is of great importance to understand the gas migration in the engineering barrier and the potential impact on its integrity for the safety assessment of nuclear waste repository. A hydro-mechanical-damage model for analyzing gas migration in sedimentary rocks is established in this paper. On the basis of which, a set of coupled formulas for the coupling of gas migration in rock mass is established. The model considers the characteristics of gas migration in sedimentary rock, especially the microcracks caused by the degradation of elastic modulus and damage, and the coupling between the rock deformation and failure of fractures. The numerical simulation of gas injection test is beneficial to understand the mechanism of gas migration process in sedimentary rock.
url	http://dx.doi.org/10.1155/2018/2973279
work_keys_str_mv	AT yixue evaluationofgasmigrationandrockdamagecharacteristicsforundergroundnuclearwastestoragebasedonacoupledmodel AT faningdang evaluationofgasmigrationandrockdamagecharacteristicsforundergroundnuclearwastestoragebasedonacoupledmodel AT fangshi evaluationofgasmigrationandrockdamagecharacteristicsforundergroundnuclearwastestoragebasedonacoupledmodel AT rongjianli evaluationofgasmigrationandrockdamagecharacteristicsforundergroundnuclearwastestoragebasedonacoupledmodel AT zhengzhengcao evaluationofgasmigrationandrockdamagecharacteristicsforundergroundnuclearwastestoragebasedonacoupledmodel
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Evaluation of Gas Migration and Rock Damage Characteristics for Underground Nuclear Waste Storage Based on a Coupled Model

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