PPV distribution of sidewalls induced by underground cavern blasting excavation

Abstract The peak particle velocity (PPV) is an important indicator for predicting blasting excavation disturbances. However, the PPV distribution in the deep underground space is significantly different from that on the outdoor ground. Therefore, it is difficult to predict the underground PPV by Sa...

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Autores principales:	Yi Luo, Xiaoqing Wei, Junhong Huang, Guang Zhang, Xing Bian, Xinping Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/dcceab663ccb4e8e9dd4e42fd5abc192
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spelling	oai:doaj.org-article:dcceab663ccb4e8e9dd4e42fd5abc1922021-12-02T16:35:56ZPPV distribution of sidewalls induced by underground cavern blasting excavation10.1038/s41598-021-86055-y2045-2322https://doaj.org/article/dcceab663ccb4e8e9dd4e42fd5abc1922021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86055-yhttps://doaj.org/toc/2045-2322Abstract The peak particle velocity (PPV) is an important indicator for predicting blasting excavation disturbances. However, the PPV distribution in the deep underground space is significantly different from that on the outdoor ground. Therefore, it is difficult to predict the underground PPV by Sadovsky’s vibration formula. The PPV sidewall distribution characteristics were studied during site blasting in an underground cavern in the Taohuazui mine in China, and a similar numerical model was used to verify the site test data. We derived a PPV prediction formula for the underground cavern sidewall surrounding rock using a mechanical analysis model of a simply supported plate and beam in combination with dimensional analysis. The model considered derived boundary constraints, comparison with site measured data, the value predicted by Sadovsky’s vibration formula, and numerical simulation results. The results showed that the PPV distribution on the middle 1/3 section of the underground cavern sidewall showed a “platform” or “bulge” different from the curve from Sadovsky’s vibration formula. The PPV amplification coefficient in this section was distributed in a drum shape. The PPV prediction formula for the middle section of the sidewall derived in this paper was highly consistent with the data measured on-site and the numerical simulation results. The mechanical analysis model with a simply supported plate and beam included an underground cavern sidewall length–height ratio of 5 and effectively supplemented the PPV prediction formula for the middle section of the traditional underground cavern sidewall.Yi LuoXiaoqing WeiJunhong HuangGuang ZhangXing BianXinping LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yi Luo Xiaoqing Wei Junhong Huang Guang Zhang Xing Bian Xinping Li PPV distribution of sidewalls induced by underground cavern blasting excavation
description	Abstract The peak particle velocity (PPV) is an important indicator for predicting blasting excavation disturbances. However, the PPV distribution in the deep underground space is significantly different from that on the outdoor ground. Therefore, it is difficult to predict the underground PPV by Sadovsky’s vibration formula. The PPV sidewall distribution characteristics were studied during site blasting in an underground cavern in the Taohuazui mine in China, and a similar numerical model was used to verify the site test data. We derived a PPV prediction formula for the underground cavern sidewall surrounding rock using a mechanical analysis model of a simply supported plate and beam in combination with dimensional analysis. The model considered derived boundary constraints, comparison with site measured data, the value predicted by Sadovsky’s vibration formula, and numerical simulation results. The results showed that the PPV distribution on the middle 1/3 section of the underground cavern sidewall showed a “platform” or “bulge” different from the curve from Sadovsky’s vibration formula. The PPV amplification coefficient in this section was distributed in a drum shape. The PPV prediction formula for the middle section of the sidewall derived in this paper was highly consistent with the data measured on-site and the numerical simulation results. The mechanical analysis model with a simply supported plate and beam included an underground cavern sidewall length–height ratio of 5 and effectively supplemented the PPV prediction formula for the middle section of the traditional underground cavern sidewall.
format	article
author	Yi Luo Xiaoqing Wei Junhong Huang Guang Zhang Xing Bian Xinping Li
author_facet	Yi Luo Xiaoqing Wei Junhong Huang Guang Zhang Xing Bian Xinping Li
author_sort	Yi Luo
title	PPV distribution of sidewalls induced by underground cavern blasting excavation
title_short	PPV distribution of sidewalls induced by underground cavern blasting excavation
title_full	PPV distribution of sidewalls induced by underground cavern blasting excavation
title_fullStr	PPV distribution of sidewalls induced by underground cavern blasting excavation
title_full_unstemmed	PPV distribution of sidewalls induced by underground cavern blasting excavation
title_sort	ppv distribution of sidewalls induced by underground cavern blasting excavation
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/dcceab663ccb4e8e9dd4e42fd5abc192
work_keys_str_mv	AT yiluo ppvdistributionofsidewallsinducedbyundergroundcavernblastingexcavation AT xiaoqingwei ppvdistributionofsidewallsinducedbyundergroundcavernblastingexcavation AT junhonghuang ppvdistributionofsidewallsinducedbyundergroundcavernblastingexcavation AT guangzhang ppvdistributionofsidewallsinducedbyundergroundcavernblastingexcavation AT xingbian ppvdistributionofsidewallsinducedbyundergroundcavernblastingexcavation AT xinpingli ppvdistributionofsidewallsinducedbyundergroundcavernblastingexcavation
_version_	1718383722492854272

PPV distribution of sidewalls induced by underground cavern blasting excavation

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