Study of Passive Protective Net Protecting the Rockfall Caused by Open-Pit Blasting on High and Steep Slope

In order to prevent rockfall caused by open-pit blasting on the high and steep slope and ensure that the passive protective net structure has sufficient impact resistance, the mechanism of blasting flyrock causing rockfall is analyzed by using ANSYS/AUTODYN to establish the model of rockfall and pas...

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Autores principales:	Zhiyu Zhang, Qingyun Qian, Jianguo Wang, Haoshan Liu, Ke Liang, Zhuo Li, Guoyin Liu
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/be364c7042b74c0892796a59717458ae
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spelling	oai:doaj.org-article:be364c7042b74c0892796a59717458ae2021-11-08T02:37:15ZStudy of Passive Protective Net Protecting the Rockfall Caused by Open-Pit Blasting on High and Steep Slope1875-920310.1155/2021/4577889https://doaj.org/article/be364c7042b74c0892796a59717458ae2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/4577889https://doaj.org/toc/1875-9203In order to prevent rockfall caused by open-pit blasting on the high and steep slope and ensure that the passive protective net structure has sufficient impact resistance, the mechanism of blasting flyrock causing rockfall is analyzed by using ANSYS/AUTODYN to establish the model of rockfall and passive protective net; at the same time, the influences of protective net size, rockfall kinetic energy, and rockfall size to the protective effect were also studied. The results show that under the condition of the same rockfall kinetic energy and rockfall size, the larger the size of the protective net, the longer the buffer time, and the impact force that net can sustain is greater; by assuming the protective net size and rockfall size to be a constant, the greater the rockfall kinetic energy, the less the interaction time between rock and net, and the greater the impulse force that net can suffer; similarly, by keeping the protective net size and the kinetic energy of rockfall to be a constant, it is found that the larger the size of the rockfall, the larger the interaction area and longer interaction time with the net, and the less net will be disrupted; the protective net used in the mine can intercept the rockfall caused by flyrock in blasting process effectively and ensure the safety of villager at the foot of the mountain.Zhiyu ZhangQingyun QianJianguo WangHaoshan LiuKe LiangZhuo LiGuoyin LiuHindawi LimitedarticlePhysicsQC1-999ENShock and Vibration, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Zhiyu Zhang Qingyun Qian Jianguo Wang Haoshan Liu Ke Liang Zhuo Li Guoyin Liu Study of Passive Protective Net Protecting the Rockfall Caused by Open-Pit Blasting on High and Steep Slope
description	In order to prevent rockfall caused by open-pit blasting on the high and steep slope and ensure that the passive protective net structure has sufficient impact resistance, the mechanism of blasting flyrock causing rockfall is analyzed by using ANSYS/AUTODYN to establish the model of rockfall and passive protective net; at the same time, the influences of protective net size, rockfall kinetic energy, and rockfall size to the protective effect were also studied. The results show that under the condition of the same rockfall kinetic energy and rockfall size, the larger the size of the protective net, the longer the buffer time, and the impact force that net can sustain is greater; by assuming the protective net size and rockfall size to be a constant, the greater the rockfall kinetic energy, the less the interaction time between rock and net, and the greater the impulse force that net can suffer; similarly, by keeping the protective net size and the kinetic energy of rockfall to be a constant, it is found that the larger the size of the rockfall, the larger the interaction area and longer interaction time with the net, and the less net will be disrupted; the protective net used in the mine can intercept the rockfall caused by flyrock in blasting process effectively and ensure the safety of villager at the foot of the mountain.
format	article
author	Zhiyu Zhang Qingyun Qian Jianguo Wang Haoshan Liu Ke Liang Zhuo Li Guoyin Liu
author_facet	Zhiyu Zhang Qingyun Qian Jianguo Wang Haoshan Liu Ke Liang Zhuo Li Guoyin Liu
author_sort	Zhiyu Zhang
title	Study of Passive Protective Net Protecting the Rockfall Caused by Open-Pit Blasting on High and Steep Slope
title_short	Study of Passive Protective Net Protecting the Rockfall Caused by Open-Pit Blasting on High and Steep Slope
title_full	Study of Passive Protective Net Protecting the Rockfall Caused by Open-Pit Blasting on High and Steep Slope
title_fullStr	Study of Passive Protective Net Protecting the Rockfall Caused by Open-Pit Blasting on High and Steep Slope
title_full_unstemmed	Study of Passive Protective Net Protecting the Rockfall Caused by Open-Pit Blasting on High and Steep Slope
title_sort	study of passive protective net protecting the rockfall caused by open-pit blasting on high and steep slope
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/be364c7042b74c0892796a59717458ae
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Study of Passive Protective Net Protecting the Rockfall Caused by Open-Pit Blasting on High and Steep Slope

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