Effect of priming and explosive initiation location on pull in hard rock underground mine

• Autorzy: Rao Koppula K. , Choudhary Bhanwar Singh

Identyfikatory

DOI

10.46873/2300-3960.1399

• Języki publikacji: EN

Abstrakty

EN

In the development of hard rock mines, achieving maximum pull after blasting plays a crucial role. 33To enhance the effectiveness of this method, several techniques have been developed, including the use of appropriate stemming material, double-primer placement, selecting optimal initiation locations, improving blast designs, and exploring stress superposition techniques through electronic detonators. This research paper focuses on investigating the effect of the priming and explosive initiation location on pull through an experimental approach. The study specifically examines the influence of different initiation approaches on pull, with a particular focus on inverse initiation without solid decking. The findings indicate that inverse initiation without solid decking reveals the best pull for competent rock. Additionally, the inverse initiation with 1st and 2nd square cut solid decking (double detonators with different delays) and spacers in periphery holes was found to be the best choice to eliminate the post-blast sockets with reasonable pull for weathered competent rock.

Słowa kluczowe

EN

mine development; drill and blast; rate of advance; priming; solid decking; inverse initiation

PL

rozwój kopalni; wiercenie i wysadzanie; prędkość posuwu; gruntowanie; pełna obudowa; odwrotna inicjacja

• Wydawca: Elsevier ; Główny Instytut Górnictwa
• Czasopismo: Journal of Sustainable Mining
• Rocznik: 2023
• Tom: Vol. 22. iss. 4
• Strony: 332--343
• Opis fizyczny: Bibliogr. 29 poz.

Twórcy

autor

Rao Koppula K.

• Tummalapalle Mine, Uranium Corporation of India Ltd, AP, India

• https://orcid.org/0000-0002-7998-6647

autor

Choudhary Bhanwar Singh

• Department of Mining Engineering, Indian Institute of Technology (ISM), Dhanbad, 826004, India

• https://orcid.org/0000-0002-5729-1748

Bibliografia

• [1] Zhang Y, Wei MD, Su GS, Li Y, Zeng JB, Deng XQ. A novel intelligent method for predicting the penetration rate of the tunnel boring machine in rocks. Math Probl Eng 2020. Article ID 3268694, 15 pages, 2020.
• [2] Koopialipoor M, Fahimifar A, Ghaleini EN, Momenzadeh M, Armaghani DJ. Development of a new hybrid ANN for solving a geotechnical problem related to tunnel boring machine performance. Eng Comput 2020;36(1):345-57.
• [3] Fodera GM, Voza A, Barovero G, Tinti F, Boldini D. Factors influencing overbreak volumes in drill-and-blast tunnel excavation. In: A statistical analysis applied to the case study of the Brenner Base Tunnel-BBT, Tunnelling and Underground Space Technology. 105; 2020. Article ID 103475.
• [4] Rao KK, Singh Choudhary Bhanwar, Ghade Ajay, Ali A Amjath. Improvised drilling and blasting techniques at underground metal mine for faster advance to enhance linear excavation and production - a techno-economic case study. J Mines Metals Fuels 2018;10(No. 66):756-63.
• [5] Sichel M. A simple analysis of the blast initiation of detonations. Acta Astronaut 1977;4(3-4):409-24.
• [6] Zhang Z. Increasing ore extraction by changing detonator positions in lkab malmberget mine. Fragblast 2005;9(1): 29-46.
• [7] Long Y, Zhong M, Xie Q, Li X, Song K, Liao K. Influence of initiation point position on fragmentation by blasting in iron ore. Rock Fragment Blast 2012;10:111-6.
• [8] Singh PK, Roy MP. Damage to surface structures due to blast vibration. Int J Rock Mech Min Sci 2010;47(6):949-61.
• [9] Khandelwal M. Evaluation and prediction of blast-induced ground vibration using support vector machine. Int J Rock Mech Min Sci 2010;47(3):509-16.
• [10] Gao Qidong, Lu Wenbo, Leng Zhendong, Yang Zhaowei, Zhang Yuzhu, Hu Haoran. Effect of initiation location within blasthole on blast vibration field and its mechanism. Shock Vib 2019. https://doi.org/10.1155/2019/5386014. Article ID 5386014, 18 pages, 2019.
• [11] Fry RS, Nicholls JA. Blast initiation and propagation of cylindrical detonations in mapp-air mixtures. AIAA J 1974; 12(12):1703-8.
• [12] Dogan O, Anil O, Akbas SO, Kantar E, Tugrul Erdem R. Evaluation of blast-induced ground vibration effects in a new residential zone. Soil Dynam Earthq Eng 2013;50:168-81.
• [13] Jimeno CL, Jimeno EL, Carcedo FJA. Drilling and blasting of rocks. Rotterdam, The Netherlands: A.A. Balkema; 1995.
• [14] Allen Michael Robert. An analysis of burn cut pull optimization through varying relief hole depths Master thesis. 2014. p. 80.
• [15] Zhang ZX. Effect of double-primer placement on rock fracture and ore recovery. Int J Rock Mech Min Sci 2014;71:208-16.
• [16] Zhang Zong-Xian. Rock fracture and blasting theory and applications. USA: Butterworth-Heinemann.; 2016.
• [17] Hagan TN. The influence of controllable blast parameters on fragmentation and mining costs, Procs. In: 1st int. Symp. On rock fragmentation by blasting, Lulea, Sweden; 1983. p. 31-51.
• [18] Jhanwar JC, Chakraborty AK, Ani Reddy HR, Jethwa JL. Application ofair decks in production blasting to improve fragmentation and economics of an open pit mine. Geotech Geol Engg J 1999;417:37-57. https://doi.org/10.1023/A:1008899928839.
• [19] Jhanwar J, Jethwa J. The use of air decks in production blasting in an open pit coal mine. J Geotech Geol Eng 2000; 18(4):269-87.
• [20] Hayat MB, Alagha L, Ali D. Air decks in surface blasting operations. J Min Sci 2019;55(6):922-9.
• [21] Xiao Jun Zhang, Xu Guang Wang, Ya Lun, Yu De, Qiang Yang. The application of DeckCharge technology in hua neng open pit mine. E3S Web of Conf 2018;38. https://doi.org/10.1051/e3sconf/20183.
• [22] Jhanwar JC, Jethwa JL, Reddy AH. Influence of air deck blasting on fragmentation in jointed rocks in an open-pit manganese mine. Eng Geol J 2000;57:13-29.
• [23] Rommayawes Suttithep. Chewchan leelasukseree & pirat jaroonpattanapong. Influence of air-deck length on fragmentation in quarry blasting. Eur Scient J 2013;vol. 3. ISSN: 1857 - 7881.
• [24] Park D, Jeon S. Reduction of blast-induced vibration in the direction of tunneling using an air-deck at the bottom of a blasthole. Int J Rock Mech Min Sci 2010;47(5):752-61.
• [25] Chi EA, Liang KS, Zhao MS. Experimental study on vibration reduction of the hole bottom air space charging. J China Coal Soc 2012;37(6):944-50.
• [26] Abdall M. The environmental impacts of air-deck blasting. University of New South Wales; 2014.
• [27] Chiappetta F. New blasting technique to eliminate subgrade drilling improve fragmentation reduce explosive consumption and lower ground vibrations. J Explos Eng 2014;21(1): 10-2.
• [28] Roy S, Singh RS. Use of spacer aided initiation technique in solid blasting in Indian underground coal mines. J Min Tech 2011;120(1):25-35.
• [29] David E, Siskind Vigil J, Stachura. Surface mine blasting. In: Proceedings: bureau of mines technology transfer seminar. Chicago; April 15, 1987.

Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).