PRACTICE OF LARGE-AREA MULTIPLE-RAW HOLES BLASTING TECHNOLOGY IN CUTTING EXCAVATION UNDER COMPLICATED CONDITION
Feng Liu
Abstract
Feng Liu
Abstract
Practice of large-area multiple-raw holes blasting technology in cutting excavation under complicated conditions was introduced.Reasonably choosing program and designing blasting network in complicated geological conditions were adopted in the cutting excavation,reduced the difficulty in arranging borehole.V-shape cutting,non-electric millisecond detonating network and multiple-raw holes were employed in the blasting large-area rocks,and smooth blasting was conducted so as to maintain the slope stabilization.The blasting proved to be effective through the practice.Some experiences obtained were useful for the similar projects.
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Practice of large-area multiple-raw holes blasting technology in cutting excavation under complicated conditions was introduced.Reasonably choosing program and designing blasting network in complicated geological conditions were adopted in the cutting excavation,reduced the difficulty in arranging borehole.V-shape cutting,non-electric millisecond detonating network and multiple-raw holes were employed in the blasting large-area rocks,and smooth blasting was conducted so as to maintain the slope stabilization.The blasting proved to be effective through the practice.Some experiences obtained were useful for the similar projects.
Key concepts: Rock blasting, Excavation, Borehole, Engineering, Geotechnical engineering, Mining engineering, Drilling and blasting, Civil engineering