Study on Blasting Technology for Open-Pit Layering of Complex Mine Adjacent to High and Steep Slope

In China, mining blasting vibration has seriously threatened the safety and stability of high and steep rock slopes. In this paper, taking the east mining area of Jianshan Phosphorus Mine as the research background, combined with field survey, field blasting test, numerical simulation and theoretica...

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Autores principales:	Menglai Wang, Xiaoshaung Li, Qihang Li, Yunjin Hu, Qiusong Chen, Song Jiang
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	open-pit mine high and steep slope blasting technology blasting vibration numerical simulation Science Q
Acceso en línea:	https://doaj.org/article/28c39c00896d43ec80cafb5b00e3de94
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id	oai:doaj.org-article:28c39c00896d43ec80cafb5b00e3de94
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spelling	oai:doaj.org-article:28c39c00896d43ec80cafb5b00e3de942021-11-16T07:47:38ZStudy on Blasting Technology for Open-Pit Layering of Complex Mine Adjacent to High and Steep Slope2296-646310.3389/feart.2021.773872https://doaj.org/article/28c39c00896d43ec80cafb5b00e3de942021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/feart.2021.773872/fullhttps://doaj.org/toc/2296-6463In China, mining blasting vibration has seriously threatened the safety and stability of high and steep rock slopes. In this paper, taking the east mining area of Jianshan Phosphorus Mine as the research background, combined with field survey, field blasting test, numerical simulation and theoretical analysis, we systematically studied the adjacent high-steep rock slope and the layered blasting technology of complex ore. Based on wide hole spacing blasting numerical simulation and field tests, the use of 8 × 4 m hole network parameters, oblique line hole-by-hole initiation method, detonator delay using 35 ms between holes, 65 ms between rows and 500 ms within the holes, the rock mass rate was reduced and the drilling workload was decreased. In addition, regression analysis was carried out on a large amount of vibration test data, and the attenuation law and propagation law of blasting vibration of adjacent high and steep slopes were predicted, which provided a reference for mine production blasting. By establishing a mathematical model of cumulative damage of rock mass blasting, it shows that the depth of impact of mining blasting on the slope of Jianshan open-pit was 0–3.6m, but the blasting did not cause overall damage to the adjacent high and steep slopes. In the future, this model can be used to predict rock damage caused by subsequent blasting.Menglai WangXiaoshaung LiXiaoshaung LiXiaoshaung LiQihang LiYunjin HuQiusong ChenSong JiangFrontiers Media S.A.articleopen-pit minehigh and steep slopeblasting technologyblasting vibrationnumerical simulationScienceQENFrontiers in Earth Science, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	open-pit mine high and steep slope blasting technology blasting vibration numerical simulation Science Q
spellingShingle	open-pit mine high and steep slope blasting technology blasting vibration numerical simulation Science Q Menglai Wang Xiaoshaung Li Xiaoshaung Li Xiaoshaung Li Qihang Li Yunjin Hu Qiusong Chen Song Jiang Study on Blasting Technology for Open-Pit Layering of Complex Mine Adjacent to High and Steep Slope
description	In China, mining blasting vibration has seriously threatened the safety and stability of high and steep rock slopes. In this paper, taking the east mining area of Jianshan Phosphorus Mine as the research background, combined with field survey, field blasting test, numerical simulation and theoretical analysis, we systematically studied the adjacent high-steep rock slope and the layered blasting technology of complex ore. Based on wide hole spacing blasting numerical simulation and field tests, the use of 8 × 4 m hole network parameters, oblique line hole-by-hole initiation method, detonator delay using 35 ms between holes, 65 ms between rows and 500 ms within the holes, the rock mass rate was reduced and the drilling workload was decreased. In addition, regression analysis was carried out on a large amount of vibration test data, and the attenuation law and propagation law of blasting vibration of adjacent high and steep slopes were predicted, which provided a reference for mine production blasting. By establishing a mathematical model of cumulative damage of rock mass blasting, it shows that the depth of impact of mining blasting on the slope of Jianshan open-pit was 0–3.6m, but the blasting did not cause overall damage to the adjacent high and steep slopes. In the future, this model can be used to predict rock damage caused by subsequent blasting.
format	article
author	Menglai Wang Xiaoshaung Li Xiaoshaung Li Xiaoshaung Li Qihang Li Yunjin Hu Qiusong Chen Song Jiang
author_facet	Menglai Wang Xiaoshaung Li Xiaoshaung Li Xiaoshaung Li Qihang Li Yunjin Hu Qiusong Chen Song Jiang
author_sort	Menglai Wang
title	Study on Blasting Technology for Open-Pit Layering of Complex Mine Adjacent to High and Steep Slope
title_short	Study on Blasting Technology for Open-Pit Layering of Complex Mine Adjacent to High and Steep Slope
title_full	Study on Blasting Technology for Open-Pit Layering of Complex Mine Adjacent to High and Steep Slope
title_fullStr	Study on Blasting Technology for Open-Pit Layering of Complex Mine Adjacent to High and Steep Slope
title_full_unstemmed	Study on Blasting Technology for Open-Pit Layering of Complex Mine Adjacent to High and Steep Slope
title_sort	study on blasting technology for open-pit layering of complex mine adjacent to high and steep slope
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/28c39c00896d43ec80cafb5b00e3de94
work_keys_str_mv	AT menglaiwang studyonblastingtechnologyforopenpitlayeringofcomplexmineadjacenttohighandsteepslope AT xiaoshaungli studyonblastingtechnologyforopenpitlayeringofcomplexmineadjacenttohighandsteepslope AT xiaoshaungli studyonblastingtechnologyforopenpitlayeringofcomplexmineadjacenttohighandsteepslope AT xiaoshaungli studyonblastingtechnologyforopenpitlayeringofcomplexmineadjacenttohighandsteepslope AT qihangli studyonblastingtechnologyforopenpitlayeringofcomplexmineadjacenttohighandsteepslope AT yunjinhu studyonblastingtechnologyforopenpitlayeringofcomplexmineadjacenttohighandsteepslope AT qiusongchen studyonblastingtechnologyforopenpitlayeringofcomplexmineadjacenttohighandsteepslope AT songjiang studyonblastingtechnologyforopenpitlayeringofcomplexmineadjacenttohighandsteepslope
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Study on Blasting Technology for Open-Pit Layering of Complex Mine Adjacent to High and Steep Slope

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