Open AccessDesign of Pre Blasting (Pre-Splitting) in Tan Cang Quarry NO.1 in Vietnam
Author(s) -
Nguyen An Dinh,
Thai Hop Pham,
Cong Dien Le,
Quang-Hieu Tran,
Dinh Bao Tran
Publication year - 2020
Publication title -
inżynieria mineralna
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.215
H-Index - 9
ISSN - 1640-4920
DOI - 10.29227/im-2020-02-20
Subject(s) - plucking , rock blasting , mining engineering , geology , rock mass classification , cohesion (chemistry) , falling (accident) , geotechnical engineering , geomorphology , medicine , chemistry , environmental health , organic chemistry
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.