Abstract: The reinforced concrete frame building with complicated surroundings was demolished by blasting. The bearing posts of building have multi-sections. The blasting parameters and specific charge for posts with different sections were determined through trial blasts. The non-load-bearing structure which may affect collapse of building were shut off in advance on the basis of safe construction. Some blastholes were arranged on primary and secondary beams, stairs and connections of beams and posts on blasting floors. These holes exploded with blasting floor, therefore, the structures could be break up adequately in course of building demolition. The cross duplicate non-electricity network was designed; and water spray automobile was used to eliminate dust in building blasting. The favorable effects were achieved in practice.

Key words: reinforced concrete frame building, non-electricity cross duplicate network, demolition by blasting