单孔爆破振动周期变化特征的分析  

ANALYSIS FOR VARIATION CHARACTERISTICS OF THE VIBRATION PERIOD INDUCED BY SINGLE HOLE BLASTING

作　　者：张乐[1] 杨年华[2] 

机构地区：[1]西安科技大学,西安710054 [2]中国铁道科学研究院,北京100081

出　　处：《工程爆破》2013年第4期1-4,共4页Engineering Blasting

基　　金：西安科技大学科研培育基金(201124);西安科技大学博士启动金项目(2011QDJ034)

摘　　要：从理论上分析了单孔爆破振动周期随距离的变化特征,并通过试验对其进行了验证。在近爆区范围内爆破振动的首周期和次周期变化不超过10ms,且爆破振动持续时间短,因此可以用近爆区范围内振动周期的均值来代表这个范围内的爆破振动周期,可为确定合理的延时范围提供参考依据。Variation characteristics of the vibration period with the change of distance induced by single hole blasting were theoretically analyzed and verified through experiment. The results showed that the change of vibration period between the first and second of blasting vibration did not exceed ten milliseconds near the blasting area, and the blasting vibration duration was short. Therefore the mean value of vibra- tion period near blasting area could represent the vibration period in the area. The research could provide reference for choosing reasonable timing range of blasting delay.

关 键 词：单孔爆破 爆破振动 振动周期 地震波 

分 类 号：O382.2[理学—流体力学]