Abstract Based on the construction method and blasting hole layout of a certain tunnel on an expressway, a four-boom jumbo drill was developed that is simple in structure, convenient to move, and suitable for the multi-bench construction of highway tunnels by the drill and blast method. Site testing showed that this jumbo drill can effectively improve working conditions, reduce labor intensity, and allow for the safe drilling of blasting holes.
Abstract:
Based on the construction method and blasting hole layout of a certain tunnel on an expressway, a four-boom jumbo drill was developed that is simple in structure, convenient to move, and suitable for the multi-bench construction of highway tunnels by the drill and blast method. Site testing showed that this jumbo drill can effectively improve working conditions, reduce labor intensity, and allow for the safe drilling of blasting holes.
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Cite this article:
.Development of a Crawler-Type Four-Boom Jumbo Drill[J] MODERN TUNNELLING TECHNOLOGY, 2012,V49(3): 198-201