中文摘要：

提出基于多元判别分析理论的岩体爆破震动损伤安全判据方法。考虑爆破震动信号的幅值强度特性、频谱特性、持时特性和时-能密度曲线特性,并选用震动峰值速度、震动主频、震动持时和时-能密度曲线下的面积作为判别因子,建立多元判别分析模型对岩体的爆破震动损伤情况进行预测。以工程岩体实测数据作为学习样本进行训练,建立相应判别模型对待判样本进行判别,利用回代估计法对模型的合理性进行检验。研究结果表明：建立的判别模型回判估计的误判率为0,预测结果与实际结果相符;判别分析模型综合考虑了影响爆破损伤的多种因素,与其他单指标判据相比,评估结果与实际结果更加相符。

英文摘要：

Based on the principle of multivariant discriminant analysis, a safety criterion method of rock blasting vibration damnification was presented. Considering the characters of extent value, frequency spectrum, delay time and time-energy density curve of blasting vibration signal, four indexes, i.e., swing value speed, dominant frequency, delay time value, and integral of the time-energy density that reflected the damnification of rock blasting vibration were taken into account as discriminant genes. A discriminant model was obtained through training a set of engineering test samples and the re-substitution method was introduced to verify the stability of model. The results show that the ratio of mis-discrimination is 0 and the prediction results are uniform with actual values. The distance discriminant analysis model has excellent performance,high prediction accuracy and is a new method of safety criterion of rock blasting vibration damnification in practical engineering.