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

doi:10.1007/978-3-030-33954-8_51

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

Earth Resources Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

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.

Original language	English
Title of host publication	Proceedings of the 28th International Symposium on Mine Planning and Equipment Selection, MPES 2019
Editors	Erkan Topal
Publisher	Springer
Pages	449-456
Number of pages	8
ISBN (Print)	9783030339531
DOIs	https://doi.org/10.1007/978-3-030-33954-8_51
Publication status	Published - 2020
Event	28th International Symposium on Mine Planning and Equipment Selection, MPES 2019 - Perth, Australia Duration: Dec 2 2019 → Dec 4 2019

Publication series

Name	Springer Series in Geomechanics and Geoengineering
ISSN (Print)	1866-8755
ISSN (Electronic)	1866-8763

Conference

Conference	28th International Symposium on Mine Planning and Equipment Selection, MPES 2019
Country/Territory	Australia
City	Perth
Period	12/2/19 → 12/4/19

All Science Journal Classification (ASJC) codes

Geotechnical Engineering and Engineering Geology
Mechanics of Materials

Access to Document

10.1007/978-3-030-33954-8_51

Cite this

Sasaoka, T., Takahashi, Y., Hamanaka, A., Wahyudi, S., & Shimada, H. (2020). Effect of delay time and firing patterns on the size of fragmented rocks by bench blasting. In E. Topal (Ed.), Proceedings of the 28th International Symposium on Mine Planning and Equipment Selection, MPES 2019 (pp. 449-456). (Springer Series in Geomechanics and Geoengineering). Springer. https://doi.org/10.1007/978-3-030-33954-8_51

Effect of delay time and firing patterns on the size of fragmented rocks by bench blasting. / Sasaoka, Takashi; Takahashi, Yoshiaki; Hamanaka, Akihiro et al.
Proceedings of the 28th International Symposium on Mine Planning and Equipment Selection, MPES 2019. ed. / Erkan Topal. Springer, 2020. p. 449-456 (Springer Series in Geomechanics and Geoengineering).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sasaoka, T, Takahashi, Y, Hamanaka, A, Wahyudi, S & Shimada, H 2020, Effect of delay time and firing patterns on the size of fragmented rocks by bench blasting. in E Topal (ed.), Proceedings of the 28th International Symposium on Mine Planning and Equipment Selection, MPES 2019. Springer Series in Geomechanics and Geoengineering, Springer, pp. 449-456, 28th International Symposium on Mine Planning and Equipment Selection, MPES 2019 , Perth, Australia, 12/2/19. https://doi.org/10.1007/978-3-030-33954-8_51

Sasaoka T, Takahashi Y, Hamanaka A, Wahyudi S, Shimada H. Effect of delay time and firing patterns on the size of fragmented rocks by bench blasting. In Topal E, editor, Proceedings of the 28th International Symposium on Mine Planning and Equipment Selection, MPES 2019. Springer. 2020. p. 449-456. (Springer Series in Geomechanics and Geoengineering). doi: 10.1007/978-3-030-33954-8_51

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

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