Effect of Delay Time and Firing Patterns on the Size of Fragmented Rocks by Bench Blasting - Collections | Kyushu University Library

Back to Results List

＜conference paper＞
Effect of Delay Time and Firing Patterns on the Size of Fragmented Rocks by Bench Blasting

Creator	Author PID K003042 0000-0002-4328-2824 Creator Name Sasaoka, Takashi 笹岡, 孝司ササオカ, タカシ Affiliation Affiliation Name Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University : Associate Professor 九州大学大学院工学研究院地球資源システム工学部門 : 准教授
	Creator Name Takahashi, Yoshiaki 髙橋, 良尭タカハシ, ヨシアキ Affiliation Affiliation Name The National Institute of Advanced Industrial Science and Technology 産業技術総合研究所
	Author PID K006510 0000-0001-7600-417X Creator Name Hamanaka, Akihiro 濵中, 晃弘ハマナカ, アキヒロ Affiliation Affiliation Name Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University : Assistant Professor 九州大学大学院工学研究院地球資源システム工学部門 : 助教
	Author PID 0000-0001-9856-6421 Creator Name Wahyudi, Sugeng Affiliation Affiliation Name Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University : Assistant Professor 九州大学大学院工学研究院地球資源システム工学部門
	Author PID K001320 0000-0001-8410-2749 Creator Name Shimada, Hideki 島田, 英樹シマダ, ヒデキ Affiliation Affiliation Name Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University : Professor 九州大学大学院工学研究院地球資源システム工学部門 : 教授
Language	English
Publisher	Springer Nature
Date	2019-11-30
Source Title	Springer Series in Geomechanics and Geoengineering
First Page	449
Last Page	456
Conference	Name International Symposium on Mine Planning & Equipment Selection : MPES 2019 Sequence 28 Date 2019-12-02～2019-12-04 Place Perth Country Australia
Publication Type	Accepted Manuscript
Access Rights	open access
Related DOI	isVersionOf https://doi.org/10.1007/978-3-030-33954-8_51
Related DOI	isPartOf https://doi.org/10.1007/978-3-030-33954-8


Abstract	This paper discusses the size control method of fragmented rocks in-duced by bench blasting in an open pit mine, especially the effect of delay time and firing pattern. Based on the results of a serie...s of field tests, it can be said that the delay time and firing pattern have an impact on the size of fragmented rocks. The application of two directions of firing pattern that the order of ignition of blast holes is from the center to both ends of the row of blast holes can produce a more uniform size of fragmented rocks compared with that of a one-directional firing pattern which is the order of the ignition of blast holes from one side to the other. Due to the rock mass conditions and products specification, the size of fragmented rocks and its distribution can be controlled by applying an appropri-ate delay time and firing pattern.show more

Hide fulltext details.

File	FileType	Size	Views	Description
4355471	pdf	669 KB	100

Details

PISSN	1866-8755
Record ID	4355471
Related ISBN	978-3-030-33953-1
Related ISBN	978-3-030-33954-8
Subject Terms	Delay time
	Firing pattern
	Rock fragmentation
Created Date	2021.02.08
Modified Date	2023.08.18