Case analysis and safety issues in demolition blasting technique of an old-fashioned chimney

摘要

Owing to its complex structure and bad stability of old brick concrete building, usually non collapse occurred when blasting demolition is adopted, leaving extreme hidden trouble because of deficiently considering the structure character during design and construction. Based on two typical accident cases of blasting and according to blasting demolition of several important segments, several safety issues in design and construction in demolition blasting technique of the old-fashioned chimney is introduced in aspects of design, construction, the inspections after blasting etc., which makes a good foundation and helps to prevention from unnecessary hazards occurring and successful implementation in the demolition blasting.