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中文摘要：
以辽宁红沿河核电站核岛基础爆破开挖为例，分析了核岛基础不同区域的岩体力学特性以及各层开挖时岩体允许损伤深度的差异，指出必须根据实际情况提出岩体爆炸振动控制方法和标准。在此基础上，基于爆破振动监测和声波实验，分析了岩体爆破振动以及损伤特征，建立了核岛基础爆破开挖时岩体损伤深度与振动速度之间的经验公式，提出了不同区域、不同允许损伤深度的情况下岩体爆炸振动速度控制标准。研究结果表明，通过监测距爆源一定距离处的岩体质点振动速度控制爆炸损伤深度的方法是合适和有效的。
英文摘要：
By taking the blasting excavation of the Hongyanhe nuclear power plant foundation for example, the mechanical properties of the rock mass were analysed in the different regions of the nuclear islands, and the damage depth differences of the rock mass were discussed for different layers under excavation. It was pointed out that the control method and safety threshold should be brought forward by the practical rock blasting. Based on blasting vibration surveying and sound wave testing conducted in construction site, the relationship between damage zone size and peak particle velocity was investigated for the rock mass at a given distance from the centre of the charging area, and the corresponding empirical formula was established. Accordingly, the safety threshold of blasting vibration was given for the different rock strata in nuclear islands and the different excavation scheme was determined with the different allowable damage depth. Results prove that the method and threshold are applicable to hold the damage depth of rock and to ensure the integrity of the bedrock under blasting excavation.
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