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岩体爆破震动损伤评估的多元判别分析模型
引用本文:凌同华,廖艳程,张胜. 岩体爆破震动损伤评估的多元判别分析模型[J]. 中南大学学报(自然科学版), 2010, 41(1)
作者姓名:凌同华  廖艳程  张胜
作者单位:长沙理工大学,土木与建筑学院,湖南,长沙,410076
基金项目:国家自然科学基金资助项目,湖南省自然科学基金资助项目 
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。

关 键 词:安全判据  岩体爆破  损伤  距离判别分析  预测

Safety criterion method of rock blasting vibration damnification based on multivariant discriminant analysis model
LING Tong-hua,LIAO Yan-cheng,ZHANG Sheng. Safety criterion method of rock blasting vibration damnification based on multivariant discriminant analysis model[J]. Journal of Central South University:Science and Technology, 2010, 41(1)
Authors:LING Tong-hua  LIAO Yan-cheng  ZHANG Sheng
Affiliation:LING Tong-hua,LIAO Yan-cheng,ZHANG Sheng (School of Civil Engineering , Architecture,Changsha University of Science , Technology,Changsha 410076,China)
Abstract: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 discrim...
Keywords:safety criterion  rock-mass blasting  damnification  distance discriminant analysis  prediction  
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