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APPLICATION OF DOWN-HOLE MILLISECOND BLASTING NEAR HIGH FREQUENCY LAUNCHER

Bai Li-gang

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Abstract

Cutting excavation of Jinan tour highway belonged to controlled blasting of mass rock in city in complex environment.It was the first case of adopting blasting method in cutting excavation near high frequency launcher.In order to control the blasting vibration effectively,down-hole millisecond blasting was employed and gave ideal effect.It provided a feasible approach to execution of deep-hole blasting in complex environment,having reference value to the similar engineering.

About this research paper

What this paper is about

Cutting excavation of Jinan tour highway belonged to controlled blasting of mass rock in city in complex environment.It was the first case of adopting blasting method in cutting excavation near high frequency launcher.In order to control the blasting vibration effectively,down-hole millisecond blasting was employed and gave ideal effect.It provided a feasible approach to execution of deep-hole blasting in complex environment,having reference value to the similar engineering.

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Available abstract

Cutting excavation of Jinan tour highway belonged to controlled blasting of mass rock in city in complex environment.It was the first case of adopting blasting method in cutting excavation near high frequency launcher.In order to control the blasting vibration effectively,down-hole millisecond blasting was employed and gave ideal effect.It provided a feasible approach to execution of deep-hole blasting in complex environment,having reference value to the similar engineering.

Key concepts: Rock blasting, Excavation, Millisecond, Drilling and blasting, Deep hole, Engineering, Rock mass classification, Mining engineering

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