2010•Mining and Metallurgical EngineeringRequires access

Practice of Blasting Demolition of Reinforced Concrete Foundation under Complex Environment

Liu Gao

Abstract

Considering the features of demolition blasting of reinforced concrete foundation under complex environment,multistage millisecond short delay blasting scheme was prepared.The design and construction of blasting demolition was introduced in details.The safety distance for blasting vibration,blasting flyrock and blasting shock wave was calculated according to each blasting scale.And it is suggested that some appropriate safety precautions shall be taken for the blasting environment within the range of unsafe distance.By linear regression with blasting vibration data monitored with Blastmare,the formula for minimum safe distance of blasting vibration is modified.

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Key concepts: Demolition, Rock blasting, Foundation (evidence), Engineering, Drilling and blasting, Structural engineering, Geotechnical engineering, Civil engineering