Experiments and simulation of block motion in underwater bench blasting.
Sci Rep. 2023 Mar 22; 13(1):4703.SR

Abstract

The blasting mechanism underlying drilling and blasting of underwater rocks, as an important component of the engineering blasting technology, has not been systematically studied. Laboratory model experiments are expensive and take a long time, while field tests fail to obtain timeous breakage and accumulation effects of underwater blasting, and may even be impossible. Considering this, a model experiment of underwater concrete bench blasting was designed, and the motion of blasted blocks was observed and evaluated with a high-speed camera. Then, numerical simulation was conducted based on Fluent and an engineering discrete element method coupling program complied using the application programming interface. Results show that the blocks form a bulge in the underwater blasting experiment under action of blast waves and expansion in the first period of bubble pulsation. Then, some blocks shrink in the first period of bubble pulsation. As the charge increases, the blast load exerts larger disturbance on the block group, resulting in significant motion of blasted blocks along the vertical direction. At the same time, the horizontal displacement of blasted blocks in the throwing direction increases.

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Authors+Show Affiliations

Wu L

Engineering Technology Research Center in Intelligent Blasting of Hubei Province, College of Science, Wuhan University of Science and Technology, Wuhan, 430065, China. wuliang@wust.edu.cn.

Liang Z

Engineering Technology Research Center in Intelligent Blasting of Hubei Province, College of Science, Wuhan University of Science and Technology, Wuhan, 430065, China.

Chen M

State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

36949172

Citation

Wu, Liang, et al. "Experiments and Simulation of Block Motion in Underwater Bench Blasting." Scientific Reports, vol. 13, no. 1, 2023, p. 4703.

Wu L, Liang Z, Chen M. Experiments and simulation of block motion in underwater bench blasting. Sci Rep. 2023;13(1):4703.

Wu, L., Liang, Z., & Chen, M. (2023). Experiments and simulation of block motion in underwater bench blasting. Scientific Reports, 13(1), 4703. https://doi.org/10.1038/s41598-023-31656-y

Wu L, Liang Z, Chen M. Experiments and Simulation of Block Motion in Underwater Bench Blasting. Sci Rep. 2023 Mar 22;13(1):4703. PubMed PMID: 36949172.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - Experiments and simulation of block motion in underwater bench blasting. AU - Wu,Liang, AU - Liang,Zhijian, AU - Chen,Ming, Y1 - 2023/03/22/ PY - 2022/09/18/received PY - 2023/03/15/accepted PY - 2023/3/23/entrez PY - 2023/3/24/pubmed PY - 2023/3/24/medline SP - 4703 EP - 4703 JF - Scientific reports JO - Sci Rep VL - 13 IS - 1 N2 - The blasting mechanism underlying drilling and blasting of underwater rocks, as an important component of the engineering blasting technology, has not been systematically studied. Laboratory model experiments are expensive and take a long time, while field tests fail to obtain timeous breakage and accumulation effects of underwater blasting, and may even be impossible. Considering this, a model experiment of underwater concrete bench blasting was designed, and the motion of blasted blocks was observed and evaluated with a high-speed camera. Then, numerical simulation was conducted based on Fluent and an engineering discrete element method coupling program complied using the application programming interface. Results show that the blocks form a bulge in the underwater blasting experiment under action of blast waves and expansion in the first period of bubble pulsation. Then, some blocks shrink in the first period of bubble pulsation. As the charge increases, the blast load exerts larger disturbance on the block group, resulting in significant motion of blasted blocks along the vertical direction. At the same time, the horizontal displacement of blasted blocks in the throwing direction increases. SN - 2045-2322 UR - https://www.unboundmedicine.com/medline/citation/36949172/Experiments_and_simulation_of_block_motion_in_underwater_bench_blasting_ DB - PRIME DP - Unbound Medicine ER -

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Experiments and simulation of block motion in underwater bench blasting.Sci Rep. 2023 Mar 22; 13(1):4703.SR