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ANALYSIS ON THE SPATTERS RESULTED FROM TOUCHDOWN OF A REINFORCED CONCRETE CHIMNEY

SHEN Chao-hu~1,ZHANG Zhi-yu~2,MIAO Yan-gang~2,DU Yun-he~1 (1.Research and Design Insitute of Engineering Science,Chengdu Military Region,Kunming 650031, China;2.Kunming University of Science and Technology,Kunming 650093,China)  
In blasting demolition of a reinforced concrete chimney,the spatters caused by its touchdown have a great hazard.By the dimension analysis,the relation of spattering distance to touchdown impulse and contact length of chimney body to the ground was established.Through the regression analysis using the data from modeling tests,the formulae for predicting the spattering distances at different conditions of ground were fitted out.As a practical example,the maximal distance of spatters when a reinforced concrete chimney with a height of 120m collapsed to the ground was forecasted by use of the derived formulae.
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