爆破振动对地表建筑稳定性影响试验
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摘要
爆破震动灾害预测和控制在爆破施工与设计中具有非常重要的地位,为了实现锡矿山锑矿床五窿道区浅层残矿的回收,确保地下开采爆破振动不影响地表建筑的安全,采用UBOX-20016爆破振动测试记录仪对该矿区地下爆破振动速度进行测定,研究了爆破振动速度与单响最大爆破药量、爆心距之间的关系.研究结果表明:采用微差爆破技术能有效的降低爆破震动的危害,该矿区地下开采微差爆破微差时间应在50 ms以上;该区残矿回收时,要严格控制单段装药量,最大不超过28.5 kg.
The forecast and control of blasting vibration disasters is very important in blasting construction and design.In order to mine the shallow remnant antimony ore in Wulongdao mining area of Xikuangshan and to ensure the security of the surface architecture during underground mining blasting,we measured the blasting vibration velocity by using the UBOX-20016 measurement recorder and studied the relation among blasting vibration velocity,maximum charge of a single segment,and blast center distance.The results show that(1) the millisecond blasting technique can effectively reduce number of disasters induced by blasting vibration and the millisecond delay time should be longer then 50ms,and(2) the maximum charge of a single segment should be strictly controlled,with the value being 28.5 kg.
The forecast and control of blasting vibration disasters is very important in blasting construction and design.In order to mine the shallow remnant antimony ore in Wulongdao mining area of Xikuangshan and to ensure the security of the surface architecture during underground mining blasting,we measured the blasting vibration velocity by using the UBOX-20016 measurement recorder and studied the relation among blasting vibration velocity,maximum charge of a single segment,and blast center distance.The results show that(1) the millisecond blasting technique can effectively reduce number of disasters induced by blasting vibration and the millisecond delay time should be longer then 50ms,and(2) the maximum charge of a single segment should be strictly controlled,with the value being 28.5 kg.
引文
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[7]魏晓林,郑炳旭.爆破震动对邻近建筑物的危害[J].工程爆破,2000,6(3):81-88.WEI Xiao-lin,ZHENG Bing-xu.Destructive effect ofblasting vibration on nearby structures[J].Engineer-ing Blasting,2000,6(3):81-88.
[8]李德林,方向,齐世福,等.爆破震动效应对建筑物的影响[J].工程爆破,2004,10(2):66-69.LI De-lin,FANG Xiang,QI Shi-fu,et al.Effect ofblasting vibration on structures[J].EngineeringBlasting,2004,10(2):66-69.
[9]张平松,刘盛东.工作面爆破振动对硐室稳定性的影响[J].采矿与安全工程学报,2007,24(2):208-211.ZHANG Ping-song,LIU Sheng-dong.Effectof ex-plosive quake in working face on stability of lanewayin coal mine[J].Journal of Mining&Safety Engi-neering,2007,24(2):208-211.
[10]GB6722-2003.爆破安全规程[S].2003.
[2]朱继红.隧道开挖爆破振动对临近建筑物影响的安全评价[J].火炸药学报,2007,30(1):78-80.ZHU Ji-hong.The safety evaluation of the closebuilding under the tunnel blasting vibration[J].Chi-nese Journal of Explosives&Propellants,2007,30(1):78-80.
[3]张立国,龚敏,于亚伦.爆破振动频率预测及其回归分析[J].辽宁工程技术大学学报,2005,24(2):187-189.ZHANG Li-guo,GONG Min,YU Ya-lun.Forecastand regression analysis of blasting vibration frequency[J].Journal of Liaoning Technical University,2005,24(2):187-189.
[4]夏祥,李俊如,李海波,等.爆破荷载作用下岩体振动特征的数值模拟[J].岩土力学,2005,26(1):50-56.XIA Xiang,LI Jun-ru,LI Hai-bo,et al.Udec mod-eling of vibration characteristics of jointed rock massunder explosion[J].Rock and Soil Mechanics,2005,26(1):50-56.
[5]张继春,彭琼芳.岩体爆破地震波衰减规律的现场试验与分析[J].辽宁工程技术大学学报,2001,20(4):399-401.ZHANG Ji-chun,PENG Qiong-fang.Field experi-ment and its analyses of attenuation law for seismicwaves resulting from rock blasting[J].Journal of Li-aoning Technical University,2001,20(4):399-401.
[6]郭学彬,张继春,刘泉,等.爆破振动对顺层岩质边坡稳定性的影响[J].矿业研究与开发,2006,26(2):77-80.GUO Xue-bin,ZHANG Ji-chun,LIU Quan,et al.Influence of blasting vibration on stability of beddingrock slope[J].Mining Research and Development,2006,26(2):77-80.
[7]魏晓林,郑炳旭.爆破震动对邻近建筑物的危害[J].工程爆破,2000,6(3):81-88.WEI Xiao-lin,ZHENG Bing-xu.Destructive effect ofblasting vibration on nearby structures[J].Engineer-ing Blasting,2000,6(3):81-88.
[8]李德林,方向,齐世福,等.爆破震动效应对建筑物的影响[J].工程爆破,2004,10(2):66-69.LI De-lin,FANG Xiang,QI Shi-fu,et al.Effect ofblasting vibration on structures[J].EngineeringBlasting,2004,10(2):66-69.
[9]张平松,刘盛东.工作面爆破振动对硐室稳定性的影响[J].采矿与安全工程学报,2007,24(2):208-211.ZHANG Ping-song,LIU Sheng-dong.Effectof ex-plosive quake in working face on stability of lanewayin coal mine[J].Journal of Mining&Safety Engi-neering,2007,24(2):208-211.
[10]GB6722-2003.爆破安全规程[S].2003.
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