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Mining Science

Tytuł artykułu

Field investigation in the detonation behavior of emulsion explosive column induced with air gaps

Autorzy Balakrishnan, Vineeth  Pradhan, Manoj  Dhekne, P. Y. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN In blasting of soft to medium hard rock, the problem of high density resulting in excessive utilization of emulsion explosive is well known. The authors have conducted some experimental blasts to delve into the detonation behavior of conventional blasting and various other explosive consumption reduction techniques which induce air gaps using plastic tubes, plastic bottles or plastic balls in the explosive column. Resistance wire technique is used for gauging in-hole continuous velocity of detonation. The VOD varies from 5321.6 m/s to 4544.2 m/s and from 5123.4 m/s to 4274.2 m/s in conventional site mixed emulsion column and distributed spherical air gap column respectively. The detonation behavior is stable and similar in both these cases. While using plastic bottles or plastic tubes as air gaps, the VOD is fluctuating from 4636.3 m/s to 3268.4 m/s and from 4935.9 m/s to 3362.8 m/s respectively with a collapse of about 12 % from the average VOD of conventional SME column. The VOD falls abruptly when the detonation wave encounters large air gaps but it is successfully travelling through the air gaps making the detonation behavior more capricious.
Słowa kluczowe
EN velocity of detonation   VOD   site mixed emulsion   SME   distributed spherical air gap   DAG   blasting  
Wydawca Wydział Geoinżynierii, Górnictwa i Geologii, Instytut Górnictwa Politechniki Wrocławskiej
Czasopismo Mining Science
Rocznik 2019
Tom Vol. 26
Strony 55--68
Opis fizyczny Bibliogr. 38 poz., rys., tab.
autor Balakrishnan, Vineeth
autor Pradhan, Manoj
  • Department of Mining Engineering, National Institute of Technology, Raipur 492010, India
autor Dhekne, P. Y.
  • Department of Mining Engineering, National Institute of Technology, Raipur 492010, India
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Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-aa902843-e6be-4c79-8810-056ead2c1401
DOI 10.5277/msc192604