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A PRACTICAL STUDY ON THE AIR-SHOCK CONTROL IN URBAN MOTORWAY SLOPE EXCAVATIONS BY BLASTING
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Ferdi Cihangir
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10.5593/sgem2023/1.1
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1314-2704
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English
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23
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1
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA |
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Blasting and mechanical excavation systems are the main methods used in the excavation of rocks masses in mining and construction works. Mechanical excavation is insufficient in the case of very hard rocks masses. Therefore, blasting is widely preferred for the excavation of hard rock masses. Environmental parameters such as ground vibrations, air-shock and fly-rock occur due to blasting. The magnitude of these parameters depend on the explosive per delay, distance between the measurement- and blasting points, geology and topography, blasting technique and blasting design. In this study, blast-induced air blast measurements were carried out at the same ground level as the blasting point and upper ground level point than the blasting point. Blastings were performed for the excavation of an urban motorway slope. Sand-bags were placed as barriers on the blast holes and capsules to investigate whether the air-shock levels could be reduced. Application of sand-bags was seen to reduce the frequencies of air-shock waves at the same- and upper level points. When the amount of explosive increased up to 2.67 times, air-shock levels only increased by 4.38% at the same level and by 5.51% at the upper level. However, frequencies of the air-shocks significantly decreased by 54.55% at the same- and by 48.51% at the upper level. This study suggests that the use of sand-bags as a barrier can significantly reduce the effects of blast-induced air shocks.
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conference
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Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023
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23rd International Multidisciplinary Scientific GeoConference SGEM 2023, 03 - 09 July, 2023
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
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303-308
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03 - 09 July, 2023
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website
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9025
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Blasting, air-shock, frequency, sand-bag barrier
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