Effect of delay time and firing patterns on the size of fragmented rocks by bench blasting

Takashi Sasaoka, Yoshiaki Takahashi, Akihiro Hamanaka, Sugeng Wahyudi, Hideki Shimada

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

This paper discusses the size control method of fragmented rocks induced by bench blasting in an open pit mine, especially the effect of delay time and firing pattern. Based on the results of a series 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 appropriate delay time and firing pattern.

本文言語英語
ホスト出版物のタイトルProceedings of the 28th International Symposium on Mine Planning and Equipment Selection, MPES 2019
編集者Erkan Topal
出版社Springer
ページ449-456
ページ数8
ISBN(印刷版)9783030339531
DOI
出版ステータス出版済み - 2020
イベント28th International Symposium on Mine Planning and Equipment Selection, MPES 2019 - Perth, オーストラリア
継続期間: 12 2 201912 4 2019

出版物シリーズ

名前Springer Series in Geomechanics and Geoengineering
ISSN(印刷版)1866-8755
ISSN(電子版)1866-8763

会議

会議28th International Symposium on Mine Planning and Equipment Selection, MPES 2019
Countryオーストラリア
CityPerth
Period12/2/1912/4/19

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials

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