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Abstract The blasting vibration of an underground chamber is observed, analyzed and processed. The decay experience formula of the blasting earthquake wave is obtained. According to features of underground chamber of a hydropower station, its damage standards of blasting vibration are given. On the basis of the decay experience formula and damage standards, the blasting safety control parameters of new cast-in-situ concrete of the underground chamber are gained. In the end, in the light of construction characteristics of the underground chamber, the control measures of the blasting are proposed. The construction effects of the project indicated that research achievements of this paper are better applied in the project, and the blasting of the project is smoothly finished.

Received: 30 March 2003

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https://rockmech.whrsm.ac.cn/EN/ OR https://rockmech.whrsm.ac.cn/EN/Y2003/V22/IS1/2506