爆破振动频率调控技术研究与应用
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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.
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.
引文
(1)郑兆昌.机械振动[M].北京:机械工业出版社,1980.
(2)丰定国.工程结构抗震[M].北京:地震出版社,2002.
(3)汪旭光.爆破手册[M].北京:冶金工业出版社,2010.
(4)施富强,周斌.建筑结构控制爆破拆除的力学分析与应用[J].工程爆破,2008,14(1):4-7.
(5)施富强,杨旭升,李文全,等.田庄台辽河公路大桥控制爆破拆除技术分析[J].工程爆破,2004,15(3):50-54.
(6)曹孝君,张继春,吕和林.频率对爆破地震作用下结构的动力响应的研究[J].爆破,2006,23(2),14-19.
(7)施富强,周斌.爆破振动影响安全评价定量分析研究[C].中国爆破新技术Ⅱ,北京:冶金工业出版社,2008,10:62-66.
(8)施富强,汪平,柴俭,王坚.铁路干线附近采矿爆破安全性论证研究[J].工程爆破,2009,15(2):82-86.
(9)施富强,梁振宇,张卫彪.重庆米兰大厦控制爆破拆除[C].中国爆破新技术Ⅱ,北京:冶金工业出版社,2008,10:371-376.
(10)SHI Fuqiang,Chai Jian,Wang Jian,et al.Danger Re-moval Technology by Blasting after Earthquake[A].New Development on Egineering Basting(The Asian-Pacific Symposium on Blasting Techniques,2009)[C].Beijing:Mtallurgy Idustry Press,2009.
(2)丰定国.工程结构抗震[M].北京:地震出版社,2002.
(3)汪旭光.爆破手册[M].北京:冶金工业出版社,2010.
(4)施富强,周斌.建筑结构控制爆破拆除的力学分析与应用[J].工程爆破,2008,14(1):4-7.
(5)施富强,杨旭升,李文全,等.田庄台辽河公路大桥控制爆破拆除技术分析[J].工程爆破,2004,15(3):50-54.
(6)曹孝君,张继春,吕和林.频率对爆破地震作用下结构的动力响应的研究[J].爆破,2006,23(2),14-19.
(7)施富强,周斌.爆破振动影响安全评价定量分析研究[C].中国爆破新技术Ⅱ,北京:冶金工业出版社,2008,10:62-66.
(8)施富强,汪平,柴俭,王坚.铁路干线附近采矿爆破安全性论证研究[J].工程爆破,2009,15(2):82-86.
(9)施富强,梁振宇,张卫彪.重庆米兰大厦控制爆破拆除[C].中国爆破新技术Ⅱ,北京:冶金工业出版社,2008,10:371-376.
(10)SHI Fuqiang,Chai Jian,Wang Jian,et al.Danger Re-moval Technology by Blasting after Earthquake[A].New Development on Egineering Basting(The Asian-Pacific Symposium on Blasting Techniques,2009)[C].Beijing:Mtallurgy Idustry Press,2009.
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