BLASTING DEMOLITION OF THE 210M HIGH REINFORCED CONCRETE CHIMNEY IN XINHAI POWER PLANT

When surrounding environment of the 210m high reinforced concrete chimney is complex and can't satisfy condition of collapse,blasting cut located 40m high position away from ground was adopt in the blasting design.The form of the blasting cut was compound trapezoid.Windows were cut and support bodies were reserved by test-blasting.The chimney collapsed directionally by blasting support bodies in the range of the blasting cut.The successful experience which contains accurate direction,security collapse,and favorable control of blasting harm was achieved by reasonable design and construction.All of which can be used as reference for the similar project.