爆破震动作用下高陡边坡稳定性分析
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摘要
通过一炮多段法获得的爆破震动测试数据,研究了某露天采场边坡爆破震动传播规律;建立了滑坡体爆破动力响应分析模型,基于运动单元法得出了爆破地震系数Ad与边坡安全系数Kd的关系;水平加速度指向台阶坡面时,边坡爆破动力响应最大;通过水平加速度和垂直加速度关系的研究,得出了保证边坡安全的许可垂直振动速度为15.58cm·s-1;给出了保证边坡安全的比例药量计算公式.
The vibration transmission regulation of blasting in a high steep slope in certain sulphur-iron is studied through 7 times blasting once detonated by EXP3850 blasting induced vibrations analysis system;Model of slope's dynamic response to vibrations induced by blasting is given. The relationship between blasting seismic coefficient and slope stability coefficient are established based on kinematics element analysis. The slope's dynamic response to blasting is at its maximum when horizontal acceleration points to the surface of slope. The vertical vibration velocity (15.58 cm·s-1)permitted by the safety of slope is deduced from the study of relationship between horizontal acceleration and vertical acceleration. Formula to determine scaled charge weight is provided to keep slope's stability.
The vibration transmission regulation of blasting in a high steep slope in certain sulphur-iron is studied through 7 times blasting once detonated by EXP3850 blasting induced vibrations analysis system;Model of slope's dynamic response to vibrations induced by blasting is given. The relationship between blasting seismic coefficient and slope stability coefficient are established based on kinematics element analysis. The slope's dynamic response to blasting is at its maximum when horizontal acceleration points to the surface of slope. The vertical vibration velocity (15.58 cm·s-1)permitted by the safety of slope is deduced from the study of relationship between horizontal acceleration and vertical acceleration. Formula to determine scaled charge weight is provided to keep slope's stability.
引文
[1]刘立平,雷尊宇,周富春.地震边坡稳定分析方法综述[J].重庆交通学院学报,2001,20(3):83-88.LIU Liping,LEI Zunyu,ZHOU Fuchun.The evaluation of seismic slope stability analysis methods[J].Journal of Chongqing Jiaotong Institute,2001,20(3):883-88(.in Chinese)
[2]Ling H L,Cheng,A D.Rock sliding induced by seismic force[J].International Journal of Rock Mechanics and Mining Sciences.,1997,34(6):1021-1029.
[3]朱传云,卢文波,董振华.岩质边坡爆破振动安全判据综述[J].爆破,1997,14(4):13-17.ZHU Chuanyun,LU Wenbo,DONG Zhenhua.Safety criteria of rock slope blasting vibration[J].Blasting,1997,14(4):13-17(.in Chinese)
[4]王玉杰,梁开水,田新邦.周宁水电站地下厂房开挖爆破地震波衰减规律的研究[J].岩石力学与工程学报,2005,24(22):4111-4113.WANG Yujie,LIANG Kaishui,TIAN Xinbang.Study on redundant regulation of underground digging blasting vibration of Zhouning hydropower station[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(22):4111-4113(.in Chinese)
[5]李孝林,佟彦军.爆破地震传播规律及其激励特性分析[J].爆破,2004,21(3):90-92.LI Xiaolin,TONG Yanjun.Analysis of blasting vibration transmission regularity and promoting characteristics[J].Blasting,2004,21(3):90-92(.in Chinese)
[6]曹平,申其鸿.地下水作用边坡稳定性的运动单元法分析[J].中南工业大学学报(自然科学版),2001,32(1):13-15.CAO Ping,SHEN Qihong.Kinematics element analysis for the stability of slopes with ground water[J].Journal of Central South University of Technology(Natural Science),2001,32(1):13-15(.in Chinese)
[7]曹平,Peter Gussmann.运动单元法与边坡稳定性分析[J].岩石力学与工程学报,1999,18(6):663-666.CAO Ping,Peter Gussmann.Kinematiical element method and slope stability analysis[J].Chinese Journal of Rock Mechanics and Engineering,1999,18(6):663-666(.in Chinese)
[2]Ling H L,Cheng,A D.Rock sliding induced by seismic force[J].International Journal of Rock Mechanics and Mining Sciences.,1997,34(6):1021-1029.
[3]朱传云,卢文波,董振华.岩质边坡爆破振动安全判据综述[J].爆破,1997,14(4):13-17.ZHU Chuanyun,LU Wenbo,DONG Zhenhua.Safety criteria of rock slope blasting vibration[J].Blasting,1997,14(4):13-17(.in Chinese)
[4]王玉杰,梁开水,田新邦.周宁水电站地下厂房开挖爆破地震波衰减规律的研究[J].岩石力学与工程学报,2005,24(22):4111-4113.WANG Yujie,LIANG Kaishui,TIAN Xinbang.Study on redundant regulation of underground digging blasting vibration of Zhouning hydropower station[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(22):4111-4113(.in Chinese)
[5]李孝林,佟彦军.爆破地震传播规律及其激励特性分析[J].爆破,2004,21(3):90-92.LI Xiaolin,TONG Yanjun.Analysis of blasting vibration transmission regularity and promoting characteristics[J].Blasting,2004,21(3):90-92(.in Chinese)
[6]曹平,申其鸿.地下水作用边坡稳定性的运动单元法分析[J].中南工业大学学报(自然科学版),2001,32(1):13-15.CAO Ping,SHEN Qihong.Kinematics element analysis for the stability of slopes with ground water[J].Journal of Central South University of Technology(Natural Science),2001,32(1):13-15(.in Chinese)
[7]曹平,Peter Gussmann.运动单元法与边坡稳定性分析[J].岩石力学与工程学报,1999,18(6):663-666.CAO Ping,Peter Gussmann.Kinematiical element method and slope stability analysis[J].Chinese Journal of Rock Mechanics and Engineering,1999,18(6):663-666(.in Chinese)
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