摘要
应用机械振动控制理论研究爆破振动的频谱特性,发现延时爆破引发的地震是由逐孔破岩振动和孔间延时振动两种不同能谱的振波迭加而成。以延时起爆振动作为控制基波,将逐孔破岩振波转为谐波分析,再利用运动震源所产生的多普勒效应,合成混频实现振波频移。据此,建立了爆破振动动力响应控制的基本理论和设计方法,并成功应用于岩土爆破和拆除爆破。
Using the control theory of mechanical vibration to study the characteristics of blast spectrum, it was found that the earthquake occurred in delay blasting was caused by the superposition of rock blasting vibration and delay time vibration which were in the different spectrum. The rock blasting oscillating wave was transformed into harmonic wave to analyze by setting the delay explosion oscillating wave as the command fundamental wave, on this base, using the Doppler effect caused by floating epicenter, the mixed frequency was finally synthesized to achieve the frequency shift. According to these, fundamental theory and design methodology of the blast vibration dynamical response control were established and the theory and methodology were successfully applied into geotechnical blasting and demolition blasting.
出处
《工程爆破》
北大核心
2012年第2期54-59,共6页
Engineering Blasting
关键词
爆破振动
频率控制
土岩爆破
拆除爆破
Blasting vibration
Frequency control
Geotechnical blasting
Demolition blasting
