简要阐述了水下爆破作用下建(构)筑物安全性能评价指标，综合分析了振动幅值单因素安全判据在水下爆破紧邻建(构)筑物安全性能评定中的应用，并介绍了振速-频率双因素安全判据理论研究方法及各国安全判定标准，分析讨论了两种判据在爆破振动安全评定考虑因素与应用范围上的不足º基于累积损伤机理及振动叠加理论，介绍了爆破振动持续时间及微差爆破延时间隔对建(构)筑物安全性能的影响º提出爆破振动安全判据应从爆破振动持续时间及微差爆破延时间隔这两方面加以完善，并建议在实际工程中采用最佳微差延时间隔以达到最优降振效果º%Evaluation indexes for the safety performance of structures under the underwater blasting were briefly expounded, and the application of the single vibration amplitude criterion to the safety performance evaluation under this circumstance was analyzed. Besides, the theoretical research methods of the dual-factor vibrating velocity-frequency safety criterion as well as the national current standards were introduced. From the above, the lack of the consideration and application scope of both criterions in the safety performance evaluation of blasting vibration was discussed. Based on the cumulative damage mechanism and the vibration superposition theory, the effect that the blasting vibration duration and the differential blasting delay interval result in the safety performance of structures was studied. It was proposed that the safety criterion of blasting vibration should be improved from two aspects, the blasting vibration duration and differential blasting delay interval, and the ideal millisecond delay intervals should be applied in practical engineering to achieve optimal effect of vibration reduction.
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