爆破振动峰值速度预报方法探讨
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摘要
爆破借助爆炸能做功,它是一种在地上和地下工程中广泛使用的廉价、经济的岩土开挖方式。爆破造成的振动会对附近结构及周围场地产生不利影响;振动峰值速度通常被用来评价爆破地震风险。已有一些预报爆破振动峰值速度的公式和方法,但在超出了推导这些公式的特定条件时,它们是不适用的。爆破地震波在岩土体中传播时,地面振动是复杂的,受许多因素影响。论文探讨了爆破振动峰值速度预报的公式法和Fourmap方法;特别地,作者还尝试利用人工神经网络预报了爆破振动峰值速度。
Blasting does work using explosion energy.It is a cheap and economical means of rock and soil excavation and widely used in ground and underground excavating engineering projects.Blast-induced ground vibration has harmful impacts on nearby structures and fields.The peak particle vibration velocity produced by ground vibration is commonly used to evaluate the risk of blast earthquake.There have been some empirical equations and methods to predict the peak ground vibration velocity,however,these equations are invalid when the specific conditions used for deduction can't be met.When blast earthquake wave propagates in rock and soil masses,ground vibration is complex and is influenced by many parameters.A discussion about the empirical equations and Fourmap method predicting the peak ground vibration velocity due to blasting was performed.Farther more,an attempt was made to predict the peak ground vibration velocity in blast earthquake by using an artificial neural network.
Blasting does work using explosion energy.It is a cheap and economical means of rock and soil excavation and widely used in ground and underground excavating engineering projects.Blast-induced ground vibration has harmful impacts on nearby structures and fields.The peak particle vibration velocity produced by ground vibration is commonly used to evaluate the risk of blast earthquake.There have been some empirical equations and methods to predict the peak ground vibration velocity,however,these equations are invalid when the specific conditions used for deduction can't be met.When blast earthquake wave propagates in rock and soil masses,ground vibration is complex and is influenced by many parameters.A discussion about the empirical equations and Fourmap method predicting the peak ground vibration velocity due to blasting was performed.Farther more,an attempt was made to predict the peak ground vibration velocity in blast earthquake by using an artificial neural network.
引文
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[2]Singh TN.Artificial Neural Network Approach for Predictionand Control of Ground Vibration in Mines[J].Mining Tech-nology.September,2004,113:251-256.
[3]张雪亮,王树棠.爆破地震效应[M].北京:地震出版社,1981.
[4]言志信,吴德伦,许明.地震效应及安全研究[J].岩土力学,2002.23(2):201-203.
[5]Yan Zhixin,Jiang Ping,Chen Guoyuan,et al.Study on Blas-ting Vibration Safety at Weigang Iron Mine[C].China:2006ISSST,2006,10:1188-1190.
[6]唐春海,于亚伦,王建宙.爆破地震动安全判据的初步探讨[J].有色金属,2001.53(1):1-4.
[7]言志信,王永和,江平.爆破地震测试及建筑结构安全标准研究[J].岩石力学与工程学报,2003,22(11):543-545.
[8]徐全军,毛致远,张庆明.深孔微差爆破震动预报浅析[J].爆炸与冲击,1998.18(2):182-186.
[9]Zurada J M.Introduction to Artificial Neural System[M].West Publishing Company,1992.
[10]Smith M.Neural Networks for Statistical Modeling[M].NY:Van Nostrand Reinhold,1993.
[11]言志信.结构拆除及爆破镇动效应研究[D].重庆:重庆大学,2002.
[12]李玉民,倪芝芳.地下工程开挖爆破的地面振动特征[J].岩石力学与工程学报,1997,16(3):274-278.
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