A field-scale investigation into the strategic location of air decks for improved blasting performance

• Autorzy: Saqib Shahab , Qureshi Mohsin Usman , Rashid Hafiz Muhammad Awais , Ali Danish , Rasool Ali Murtaza

Identyfikatory

DOI

10.24425/ams.2024.151442

• Języki publikacji: EN

Abstrakty

EN

Airdeck blasting is a promising technique for improved blast efficiency, reducing explosive consumption, and enhancing fragmentation. Nevertheless, it lacks widespread adoption due to design guideline gaps and differing opinions on air deck placement. This study offers technical guidance based on field experiments to optimise air deck blasting. Full-scale blast experiments were conducted at four distinct limestone benches to evaluate the efficacy of air deck implementation. At Bench-1, experiments were performed using conventional blasting (with full-column charge) and air decks at three strategic air deck positions (i.e., top, mid, and bottom) within blast holes at a selected quarry site. For Benches 2 and 3, comparative fragmentation analyses were conducted between conventional blasts and those utilising air decks positioned in the middle of the explosive column. Furthermore, the impact of multiple mid-air decks within explosive columns was also evaluated at Bench-4. A comparison of blast fragmentation results revealed that fragments obtained through the air decking technique surpassed those from the full-column charge, regardless of air deck placement. Among the tested air deck positions, the single air deck positioned at the middle of the explosive column yielded superior fragmentation results than other locations. In addition, this technique showed a reduction in explosive charge, back break, and toe-related issues.

Słowa kluczowe

EN

air deck blasting; fragmentation; explosive charge; bench blasting; mining

PL

górnictwo; ładunek wybuchowy; otwór strzałowy

• Wydawca: Instytut Mechaniki Górotworu PAN
• Czasopismo: Archives of Mining Sciences
• Rocznik: 2024
• Tom: Vol. 69, no. 3
• Strony: 391--407
• Opis fizyczny: Bibliogr. 25 poz., fot., rys., wykr.

Twórcy

autor

Saqib Shahab

• Department of Mining Engineering, University of Engineering and Technology Lahore 54890 Pakistan

• https://orcid.org/0000-0002-1813-9129

autor

Qureshi Mohsin Usman

• Faculty of Engineering, Sohar University, Po Box 44, Postal Code 311, Sohar, Oman

• https://orcid.org/0000-0002-6932-6944+

autor

Rashid Hafiz Muhammad Awais

• Department of Geological Engineering, University of Engineering and Technology Lahore 54890 Pakistan

• https://orcid.org/0000-0001-5884-9814

autor

Ali Danish

• Mining Engineering and Management, South Dakota School of Mines and Technology, Rapid City, SD, USA 57701

• https://orcid.org/0000-0003-4136-0830

autor

Rasool Ali Murtaza

• Diamer Basha Dam Consultant Group (DBCG) – National Engineering Services Pakistan (NESPAK), Lahore, Pakistan

• https://orcid.org/0000-0003-4187-2609

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025)