Optimization Analysis of Excavation Procedure Design of Underground Powerhouses under High In Situ Stress in China

To recommend the excavation procedures and design parameters for underground powerhouses, excavation procedures of fifty-one underground powerhouses in China were summarized and analyzed based on in situ stress conditions. Firstly, the complex stress environment in China was introduced and fifty-one...

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Autores principales:	Xiao Liu, Peng Yan, Ming Chen, Sheng Luo, Ang Lu, Wenbo Lu, Gaohui Wang, Shuling Huang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	underground powerhouse excavation procedure high in situ stress strength–stress ratio Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/6e33f1f2635c4b7c86caa00a144e00e9
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spelling	oai:doaj.org-article:6e33f1f2635c4b7c86caa00a144e00e92021-11-11T15:17:31ZOptimization Analysis of Excavation Procedure Design of Underground Powerhouses under High In Situ Stress in China10.3390/app1121102522076-3417https://doaj.org/article/6e33f1f2635c4b7c86caa00a144e00e92021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10252https://doaj.org/toc/2076-3417To recommend the excavation procedures and design parameters for underground powerhouses, excavation procedures of fifty-one underground powerhouses in China were summarized and analyzed based on in situ stress conditions. Firstly, the complex stress environment in China was introduced and fifty-one underground powerhouses with their engineering scale, size, lithology, rock classification and in situ stress level were listed in detail. Subsequently, to evaluate the influence of in situ stress levels on excavation procedure design, the correlation between excavation procedures and in situ stress level in three main excavation zones were analyzed accordingly. Moreover, to provide the excavation design recommendations, the strength–stress ratio (SSR) was promoted to analyze and recommend the design parameters, and the blasting excavation design based on the stress transient unloading control was also supplemented. The results show that excavation procedures have different priorities under different in situ stress levels, and the design parameters show an obvious relationship with in situ stress levels. Moreover, the excavation procedure parameters are suggested to adjust accordingly under different SSR. The discussion of influencing factors and specification ensures its rationality and accuracy. It is believed that the summary and recommendations can provide a good reference for excavation procedure optimization of underground powerhouse under high in situ stress.Xiao LiuPeng YanMing ChenSheng LuoAng LuWenbo LuGaohui WangShuling HuangMDPI AGarticleunderground powerhouseexcavation procedurehigh in situ stressstrength–stress ratioTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10252, p 10252 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	underground powerhouse excavation procedure high in situ stress strength–stress ratio Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	underground powerhouse excavation procedure high in situ stress strength–stress ratio Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Xiao Liu Peng Yan Ming Chen Sheng Luo Ang Lu Wenbo Lu Gaohui Wang Shuling Huang Optimization Analysis of Excavation Procedure Design of Underground Powerhouses under High In Situ Stress in China
description	To recommend the excavation procedures and design parameters for underground powerhouses, excavation procedures of fifty-one underground powerhouses in China were summarized and analyzed based on in situ stress conditions. Firstly, the complex stress environment in China was introduced and fifty-one underground powerhouses with their engineering scale, size, lithology, rock classification and in situ stress level were listed in detail. Subsequently, to evaluate the influence of in situ stress levels on excavation procedure design, the correlation between excavation procedures and in situ stress level in three main excavation zones were analyzed accordingly. Moreover, to provide the excavation design recommendations, the strength–stress ratio (SSR) was promoted to analyze and recommend the design parameters, and the blasting excavation design based on the stress transient unloading control was also supplemented. The results show that excavation procedures have different priorities under different in situ stress levels, and the design parameters show an obvious relationship with in situ stress levels. Moreover, the excavation procedure parameters are suggested to adjust accordingly under different SSR. The discussion of influencing factors and specification ensures its rationality and accuracy. It is believed that the summary and recommendations can provide a good reference for excavation procedure optimization of underground powerhouse under high in situ stress.
format	article
author	Xiao Liu Peng Yan Ming Chen Sheng Luo Ang Lu Wenbo Lu Gaohui Wang Shuling Huang
author_facet	Xiao Liu Peng Yan Ming Chen Sheng Luo Ang Lu Wenbo Lu Gaohui Wang Shuling Huang
author_sort	Xiao Liu
title	Optimization Analysis of Excavation Procedure Design of Underground Powerhouses under High In Situ Stress in China
title_short	Optimization Analysis of Excavation Procedure Design of Underground Powerhouses under High In Situ Stress in China
title_full	Optimization Analysis of Excavation Procedure Design of Underground Powerhouses under High In Situ Stress in China
title_fullStr	Optimization Analysis of Excavation Procedure Design of Underground Powerhouses under High In Situ Stress in China
title_full_unstemmed	Optimization Analysis of Excavation Procedure Design of Underground Powerhouses under High In Situ Stress in China
title_sort	optimization analysis of excavation procedure design of underground powerhouses under high in situ stress in china
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6e33f1f2635c4b7c86caa00a144e00e9
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Optimization Analysis of Excavation Procedure Design of Underground Powerhouses under High In Situ Stress in China

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