基于有限元数值计算的爆破震动强度分析
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摘要
爆破震动强度的预测一直是爆破震动危害控制的前提和基础,也是其研究的一个重要课题。基于有限元数值模拟方法的基础上对反映爆破震动强度的重要指标——质点振动速度的计算方法进行了探讨,并对空气和水两种不同间隔装药结构下的震动强度计算结果进行了对比分析。数值模拟结果表明,在爆心距不太大的情况下,计算结果与实测结果吻合较好,研究结果对爆破设计与施工有一定的指导意义。
Forecasting of the blasting vibration is always the premise and basis of the controlling of the blasting vibration damage,and is an important subject of it.Based on the numerical simulation method of finite element,the calculation method of particle vibration velocity,an important index reflecting the blasting vibration intensity,is discussed;and an comparison analysis of the calculation results between two different kinds of charge structures decked with air and water is made.Numerical simulation results indicate that the calculation results are correspondent with the actual results if the distance from the blasting center is not far;it has certain significance to the design and construction of blasting.
Forecasting of the blasting vibration is always the premise and basis of the controlling of the blasting vibration damage,and is an important subject of it.Based on the numerical simulation method of finite element,the calculation method of particle vibration velocity,an important index reflecting the blasting vibration intensity,is discussed;and an comparison analysis of the calculation results between two different kinds of charge structures decked with air and water is made.Numerical simulation results indicate that the calculation results are correspondent with the actual results if the distance from the blasting center is not far;it has certain significance to the design and construction of blasting.
引文
[1]吴立,饶杨安,黄常波.爆破振动分析预测与控制方法综述[J].水文地质工程地质,2004,2004(增刊):136-140.WU Li,RAO Yang-an,HUANG Chang-bo.Overview of analysis forecasting and controlling method of blasting vibration[J].Hydrogeology and Engineering Geology,2004,2004(Supp.):136-140.
[2]陈德志,朱瑞赓,徐顺香.基于BP神经网络的路堑爆破对邻近民房安全预测研究[J].岩石力学与工程学报,2002,21(S2):2 554-2 557.CHEN De-zhi,ZHU Rui-geng,XU Shun-xiang.Forecasting study on influence of roadbed blasting on neighboring house based on BP neural network[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(S2):2 554-2 557.
[3]徐全军,刘强,聂渝军,等.爆破地震峰值预报神经网络研究[J].爆炸与冲击,1999,19(2):133-138.XU Quan-jun,LIU Qiang,NIE Yu-jun,et al.Study of neural network prediction on peak particle amplitude of blasting ground vibration[J].Explosion and Shock Waves,1999,19(2):133-138.
[4]王仲琦,张奇,白春华.孔深影响爆炸应力波特性的数值分析[J].岩石力学与工程学报,2002,21(4):550-553.WANG Zhong-qi,ZHANG Qi,BAI Chun-hua.Numerical simulation of influence of hole depth on explosion effect[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(4):550-553.
[5]龙源,冯长根,徐全军,等.爆破地震波在岩石介质中传播特性与数值计算研究[J].工程爆破,2000,6(3):1-7.LONG Yuan,FENG Chang-gen,XU Quan-jun,et al.Study on propagation characteristics of blasting seismic waves in a rock medium and numerical calculation[J].Engineering Blasting,2000,6(3):1-7.
[2]陈德志,朱瑞赓,徐顺香.基于BP神经网络的路堑爆破对邻近民房安全预测研究[J].岩石力学与工程学报,2002,21(S2):2 554-2 557.CHEN De-zhi,ZHU Rui-geng,XU Shun-xiang.Forecasting study on influence of roadbed blasting on neighboring house based on BP neural network[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(S2):2 554-2 557.
[3]徐全军,刘强,聂渝军,等.爆破地震峰值预报神经网络研究[J].爆炸与冲击,1999,19(2):133-138.XU Quan-jun,LIU Qiang,NIE Yu-jun,et al.Study of neural network prediction on peak particle amplitude of blasting ground vibration[J].Explosion and Shock Waves,1999,19(2):133-138.
[4]王仲琦,张奇,白春华.孔深影响爆炸应力波特性的数值分析[J].岩石力学与工程学报,2002,21(4):550-553.WANG Zhong-qi,ZHANG Qi,BAI Chun-hua.Numerical simulation of influence of hole depth on explosion effect[J].Chinese Journal of Rock Mechanics and Engineering,2002,21(4):550-553.
[5]龙源,冯长根,徐全军,等.爆破地震波在岩石介质中传播特性与数值计算研究[J].工程爆破,2000,6(3):1-7.LONG Yuan,FENG Chang-gen,XU Quan-jun,et al.Study on propagation characteristics of blasting seismic waves in a rock medium and numerical calculation[J].Engineering Blasting,2000,6(3):1-7.
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