Design of Pre Blasting (Pre-Splitting) in Tan Cang Quarry NO.1 in Vietnam

  • Nguyen An Dinh
  • Thai Hop PHAM Bien Hoa Building Materials Production and Construction Company, Dong Nai, Vietnam
  • Cong Dien LE Nam Bo Mining Chemical Industry Company – MICCO, Baria – Vungtau, Vietnam
  • Quang Hieu TRAN Hanoi University of Mining and Geology, Hanoi, Vietnam
  • Dinh Bao TRAN Hanoi University of Mining and Geology, Hanoi, Vietnam
DOI: https://doi.org/10.29227/IM-2020-02-20
Keywords: pre-splitting, limestone quarry, blasting parameters

Abstract

Nowadays, construction material quarries in Dong Nai Province are exploiting with large quarrying depth, and the annual output could reach to tens of million cubic meters. The blasting frequency could be reached to hundreds of times, so the frequency is the major reason decreasing the cohesion of rock mass. Therefore, the surrounding area of blasting holes is broken, especially the area next to the final border where bench slope angle is not implemented as that of design stage, as well as the back break, also causes fractures on the bench slope, resulting in instability and unsafety due to falling rock. In this paper, the author also wants to introduce the pre blasting and the method to define blasting parameters to increase the stabilization of Slopes in Tan Cang quarry NO.1 in Vietnam.

Published
2020-10-08
How to Cite
An Dinh, N., PHAM, T. H., LE , C. D., TRAN , Q. H., & TRAN , D. B. (2020). Design of Pre Blasting (Pre-Splitting) in Tan Cang Quarry NO.1 in Vietnam. Test, 1(2). https://doi.org/10.29227/IM-2020-02-20
Issue
Vol 1 No 2 (2020): Inżynieria Mineralna
Section
ARTICLES

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