Study on control of rock fragmentation at limestone quarry

Takashi Sasaoka, Hideki Shimada, Takayuki Sasaki, Masatomo Ichinose, Kikuo Matsui

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The size distribution of a muck pile depends not on only the blasting standard but also on the mechanical properties, joint system, and crack density of the rock mass. As, the cracks in the rock masses are especially heavily developed at the limestone quarries in Japan, they, along with the joints, have a large impact on the effects of blasting, such as the size of the muck pile. Therefore, if the joint system and/or crack density in a rock mass can be determined and quantitatively evaluated, the blasting operation can be conducted more effectively, efficiently and safely. However, guidelines for designing appropriate blasting standards based on the rock mass conditions have not yet been scientifically developed. Therefore, blasting tests were conducted on different mines and faces, under different geological conditions and blasting standards, in order to determine the impacts of each factor on the effects of blasting. Summarized the results of a series of blasting tests and described the impacts of geological conditions on the size of the muck pile produced by blast.

Original languageEnglish
Pages (from-to)365-368
Number of pages4
JournalJournal of Coal Science and Engineering
Volume14
Issue number3
DOIs
Publication statusPublished - Sep 2008

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Energy Engineering and Power Technology

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