Safety evaluation of continuous multi-span aqueduct's demolition blasting based on FAHP method

doi:10.16265/j.cnki.issn 1003-3033.2020.11.010

Abstract

Abstract: In order to effectively control blasting hazard factors, with demolition blasting of continuous multi-span aqueduct's complex structure as research object, a safety evaluation model of its demolition blasting was established by using FAHP method. Then, a triangular fuzzy function was developed to quantitatively describe comparative strength. Finally, weight and membership degree of influencing factors at different levels were obtained by defining corresponding matrix operation, and safety evaluation grade of the object was analyzed. The results show that FAHP quantitatively evaluates safety risk of demolition blasting, and obtains weight and importance ranking of influencing factors. And comprehensive assessment score of the object is 75.18, rated as "relatively safe". Blasting design parameters are optimized, and construction quality of drilling, breakpoint location and pretreatment is improved.

Key words: fuzzy analytic hierarchy process(FAHP), continuous multi-span, aqueduct, demolition blasting, safety evaluation

CLC Number:

X932

ZHANG Zhixiong, YE Xueyun, YIN Zhiqiang, LIU Yang, LAN Shengning. Safety evaluation of continuous multi-span aqueduct's demolition blasting based on FAHP method[J]. China Safety Science Journal, 2020, 30(11): 67-74.

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