Development and Application of Mixed Explosive Equipment for Tunnel Construction Site
In order to accelerate the development of mechanization in tunnel drilling and blasting construction,and to address the problems of large number of construction personnel,high labor intensity,high safety hazards,and unstable blasting quality in traditional manual charging processes,a mixed explosive equipment for on-site mechanized charging construction in tunnel drilling and blasting has been developed.The article combines the production process of on-site mixed emulsion explosives and the pain points of manual loading construction to conduct overall design and application technology research on on-site mixed explosive equipment.The developed on-site mixed explosive equipment has the following characteristics:a long-distance transportation drag reduction device can deliver emulsion explosives to 40 m;the charging system is equipped with a high-precision matrix pump and pipe feeder,with a measurement accuracy of≤2%,and has a coupled charging function to meet the requirements of refined construction;the intelligent operation platform has functions such as borehole positioning,automatic finger drilling,and parameter optimization,reducing the skill requirements and number of operators,and improving the quality of blasting.The on-site mixed explosive equipment has been successfully applied in the volcanic tunnel along the Yangtze River and the Xiaofeng Tunnel on the Yixing connecting line.
high-speed railway tunneldrilling and blasting methodon-site mixingexplosive equipment
NETL
NSTL
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