基于波形预测小波包分析模型的降振微差时间选择
摘要
从计算机模拟的角度,利用波形预测的小波包分析模型进行了段微差时间间隔的优化选择研究。算例表明:不同的微差段数,有合适的微差时间间隔范围,在该范围选择不同的微差时间间隔,具有不同的结果;随着微差段数的增加,段微差时间间隔的选择范围变窄,且选择范围出现更细的划分。这说明在实施微差爆破过程中,段微差时间间隔应当选择更高的精度,才能满足相应的干扰降振要求。
Using the wavelet packet model of waveform prediction and the computer simulation, the optimum selection of millisecond delay intervals among different blasting groups has been studied in order to reduce the ground vibration. The calculation shows that the selection is dependant upon the number of blasting groups, and its scope becomes narrow with the latter deceasing and a refinement is then required. Consequently the selection should be hold with higher precision in practice to achieve a proper waveform resulting in vibration reduction in the millisecond delayed multigroup blasting.
Using the wavelet packet model of waveform prediction and the computer simulation, the optimum selection of millisecond delay intervals among different blasting groups has been studied in order to reduce the ground vibration. The calculation shows that the selection is dependant upon the number of blasting groups, and its scope becomes narrow with the latter deceasing and a refinement is then required. Consequently the selection should be hold with higher precision in practice to achieve a proper waveform resulting in vibration reduction in the millisecond delayed multigroup blasting.
引文
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[15] SONGGuang ming,SHIXiu zhi.Monitoringandassessingmethodforblastingvibrationonopen pitslopeinHainanironmine[J].JournalofCenteralSouthUniversityofTechnol,2000,7(2):72—74.
[2] 薛礼宽.分段微差爆破地震效应的叠加分析[J].爆破,1991,8(3):67—71.XUELi kuan.Analysisofblastingseismiceffectwithmulti delay intervalmillisecondwaveformssuperposed[J].Blasting,1991,8(3):67—71.
[3] 徐全军,毛志远,张庆明,等.深孔微差爆破震动预报浅析[J].爆炸与冲击,1998,18(2):182—186.XUQiuan Jun,MAOZhi yuan,ZHANGQing ming,etal.Analysisofpredictiontogroundvibrationinducedfrommilliseconddelayintervalblastindeepholes[J].ExplosionandShockWaves,1998,18(2):182—186.
[4] 陈继强,刘为洲.多孔爆破振动强度的单孔波形叠加计算[J].金属矿山,2000,(8):23—24.CHENJi qiang,LIUWei zou.Superpositioncomputationforvibrationstrengthofsingle holewaveforminmulti holeblasting[J].MetalMines,2000,(8):23—24.
[5] MogiG,HoshinoT,AdachiT,etal.Considerationonlocalblastvibrationcontrolbydelayblasting[J].JournaloftheJapanExplosiveSociety,1999,60(5):233—239.
[6] WheelerRM.Howmilliseconddelayperiodsmayenhanceordeduceblastvibrationeffects[J].MiningEngineering,1998,40(10):969—973.
[7] 方同,薛璞.振动理论及应用[M].西安:西北工业大学出版社,1998.
[8] 郑黎明.铁路边坡岩体的振动特性和机理[J].岩石力学与工程学报,1994,13(1):69—78.ZHENLi ming.Vibrationpropertyandmechanismofrock massattheslopenearrailway[J].JournalofRockMechanicsandEngineering,1994,13(1):69—78.
[9] 宋光明.爆破振动小波包分析理论与应用研究[D].长沙:中南大学,2001.
[10] 宋光明,陈寿如,吴从师.爆破振动信号分析小波基函数构造与应用[A].江旭光,王东光.工程爆破文集———全国工程爆破学术会议论文集(第七辑)[C].乌鲁木齐:新疆柯文出版社;新疆青海年出版社,2001.
[11] YamamotoM,NodaH,UrakawaT,etal.Experimentalstudyonblastvibrationcontrolmethod,whichisbaseduponwaveinterference[J].JournalofJapanExplosiveSociety,1998,59(5):231—240.
[12] YamamotoM,NodaH,UrakawaT,etal.Theoreticalstudyonblastvibrationcontrolmethod,whichisbaseduponwaveinterference[J].JournalofJapanExplosiveSociety,1998,59(5):221—230.
[13] 宋光明,史秀志,江文明,等.露天矿边坡爆破振动破坏判据新方法及其应用[J].中南工业大学学报,2000,31(6):485—488.SONGGuang ming,SHIXiu zhi,JIANGWen ming,etal.Newmethodofblastingvibrationdamagecriterioninopenpitsslopeanditsapplications[J].JournalofCenteralSouthUniversityofTechnol,2000,31(6):485—488.
[14] 陈寿如,宋光明,陈寿如,等.近河堤采矿爆破的震动监测与控制[J].中国有色金属学报,2000,10(1):136—139.CHENShou ru,SONGGuang ming,ZHOUSheng li,etal.Monitoringandcontroltoblastinggroundvibrationinducedfromminingnearriverbank[J].ChineseJournalofNonferrousMetal,2000,10(1):136—139.
[15] SONGGuang ming,SHIXiu zhi.Monitoringandassessingmethodforblastingvibrationonopen pitslopeinHainanironmine[J].JournalofCenteralSouthUniversityofTechnol,2000,7(2):72—74.
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