冬瓜山矿爆破振动测试数据回归与时频分析
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摘要
为了保证矿山安全生产、提高生产效益,采用EXP3850爆破振动信号记录仪对爆破振动进行测试,测点布置在出矿穿脉上。爆破振动测试表明,井下爆破产生的振动信号成分非常复杂。基于爆破振动监测数据,在考虑高程差影响的条件下对巷道顶板和边帮质点振动速度进行回归,确立振动衰减规律。对等药药量不同距离的振动信号进行时频分析,得出距离对频率和PPV的影响,为类似矿山提供参考。
In order to guarantee the production security and improve production efficiency,blasting vibration test is necessary.EXP3850 vibration monitor was used and the measure points were fixed on ore wear clock.The signals produced in the blasting of the underground is extremely complex.On the basis of the monitoring data,rule of vibration attenuation is established by carrying out regression analysis on particle vibration velocity of roadway roof and slope wall under influence of height difference.Through time-frequency analysis of vibration sign on different distance after some detonator dose blasting,it gains the relation between distance,frequency and PPV which provides reference for similar mines.
In order to guarantee the production security and improve production efficiency,blasting vibration test is necessary.EXP3850 vibration monitor was used and the measure points were fixed on ore wear clock.The signals produced in the blasting of the underground is extremely complex.On the basis of the monitoring data,rule of vibration attenuation is established by carrying out regression analysis on particle vibration velocity of roadway roof and slope wall under influence of height difference.Through time-frequency analysis of vibration sign on different distance after some detonator dose blasting,it gains the relation between distance,frequency and PPV which provides reference for similar mines.
引文
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[7]GB6722—2003爆破安全规程[S].北京:中国标准出版社,2004.
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[11]言志信,王永和,江平,等.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(1):1 908-1 909.
[12]汪旭光,于亚伦.关于爆破震动安全判据几个问题[J].工程爆破,2001,7(2):88-92.
[13]唐春海,于亚伦,王建宙.爆破地震动的初步探讨[J].有色金属,2001,53(1):1-4.
[14]黄吉顺,蒋志光.爆破振动工程特性及其安全技术措施[A].见:工程爆破文集(第六辑)[C].深圳:海天出版社,1997.
[2]Grabb G I,Hiller D M,New B M.Ground VibrationsCaused by the Construction and Operation of TransportSystems[A].In:Proc 3 rd Int Symp Field Measurementsin Geomechanics[C].Oslo A A Balkema:[s.n.],1991,1(1):443-454.
[3]New B M.Ground Vibration Caused by Civil EngineeringWorks[J].Transport and Road Research Laboratory(TR2RL),Crowthorne,1986(6):54-73.
[4]Siskind D E.Ground and Air Vibrations from Blasting[M].New York:SME Mining Engineering HandbookSMEA IME,1973.
[5]Hendron A J,Aiyer A K.Stresses and Strains around aCylindrical Tunnel in an Elastic-plastic Material with Di-latency[J].U S Army Corps of Engineers,Omaha Dis-trict,NE,Tech,1972,(4):10-83.
[6]Langefors U,Kihlstrom B.The Modern Technique of RockBlasting[A].In:J Wiley 3rd Edn[C].New York:[s.n.],1978.
[7]GB6722—2003爆破安全规程[S].北京:中国标准出版社,2004.
[8]杨年华,林世雄.爆破振动测试技术探索[J].爆破,2000,17(3):90-92.
[9]李彬峰.爆破地震效应及其控制措施分析[J].爆破,2002,19(3):8-10.
[10]余永强,杨小林,王伟.矿山爆破开采对周围建筑物的影响[J].金属矿山,2004,340(10):70-71.
[11]言志信,王永和,江平,等.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(1):1 908-1 909.
[12]汪旭光,于亚伦.关于爆破震动安全判据几个问题[J].工程爆破,2001,7(2):88-92.
[13]唐春海,于亚伦,王建宙.爆破地震动的初步探讨[J].有色金属,2001,53(1):1-4.
[14]黄吉顺,蒋志光.爆破振动工程特性及其安全技术措施[A].见:工程爆破文集(第六辑)[C].深圳:海天出版社,1997.
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