一种微差爆破装药量振动预测及其在保护建筑物中的应用 Charge Weight Prediction of Millisecond Blasting and Its Application in Building Protection

本文在阐述了微差爆破中常用的预测爆破装药量经验公式及其分析损坏建筑物的主要因素基础上，针对目前预测爆破装药量方法的不足，提出了一种综合振动强度和主振频率预测爆破装药量的新方法。研究结果表明，通过对GB6722—2003《爆破安全规程》做线性化处理，得到主振频率与装药量之间的关系，由此得出了最大爆破装药量的计算公式。最后，结合实际工程事例，对所得到的新方法进行了实验验证。本文对降低工程爆破危害具有一定的参考价值。 Based on the empirical formula of millisecond blasting charge weight prediction and main factors leading to building damage, considering the shortage of charge weight prediction, a new method involving either vibration intensity or main vibration frequency is obtained. The results show that after linearizing the GB6722—2003 Blasting Safety Regulations, we can get the relationship be-tween vibration intensity and main vibration frequency, and thus formula of calculating the max-imum charge weight is given. Finally, combining with practical engineering to verify the applica-bility of the formula, this paper has some reference value for reducing the damage of engineering blasting.