基于强度折减法的尾矿坝稳定性数值模拟分析
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摘要
采用ANSYS有限元软件建立某尾矿库坝体的三维有限元模型,然后将该模型导入FLAC3D进行尾矿坝稳定性分析.选取Mohr-Coulomb理想弹塑体本构模型,采用强度折减法并以塑性区贯通为失稳判据计算尾矿坝安全系数.该方法最终得出的尾矿坝安全系数为1.93,与瑞典圆弧法计算结果(1.90)基本一致.
A 3D finite element mode of a tailings dam in south China was developed using software ANSYS,which was then introduced into FLAC3 Dto assess the stability of the tailings dam. All constituents in the model were assigned Mohr-Coulomb elastic-perfectly-plastic behavior. Safety factor( SF) was calculated by strength reduction method and using plastic zone connection as failure criteria. The SF value obtained is 1. 94,which is essential in agreement with the result of 1. 90 from Sweden arc method.
A 3D finite element mode of a tailings dam in south China was developed using software ANSYS,which was then introduced into FLAC3 Dto assess the stability of the tailings dam. All constituents in the model were assigned Mohr-Coulomb elastic-perfectly-plastic behavior. Safety factor( SF) was calculated by strength reduction method and using plastic zone connection as failure criteria. The SF value obtained is 1. 94,which is essential in agreement with the result of 1. 90 from Sweden arc method.
引文
[1]Chakraborty D,Choudhury D.Investigation of the behavior of tailings earthen dam under seismic conditions[J].American Journal of Engineering and Applied Sciences,2009,2(3):559-564.
[2]Zardari M A.Stability of tailings dams focus on numerical modeling[D].Sweden:LuleUniversity of Technology,2011.
[3]王晓涛,宁国立,陈国友.某铜矿尾矿坝稳定性分析研究[J].土木基础,2010,24(4):30-32,43.
[4]Choudhury D,Shukla J,Katdare A,et al.Slope stability and settlement analysis for dry bulk terminal at Mozambique:a case study[J].Electronic Journal of Geotechnical Engineering,2013,18(E):859-874.
[5]韩建波,张力霆,李强,等.流固耦合—强度折减法在尾矿坝稳定性分析中的应用[J].金属矿山,2011(11):29-32.
[6]张超,杨春和.有限差分强度折减法求解边坡稳定性[J].土木工程与管理学报,2011,28(2):17-21.
[7]郝全明,李帅,高国强,等.FLAC3D强度折减法在排土场边坡稳定性分析中的应用[J].采矿工程,2013(7):13-15.
[8]季聪,佴磊,马宏,等.FLAC3D强度折减理论在边坡稳定分析中的应用[J].世界地质,2013,32(1):158-164.
[9]王来贵,古新蕊.尾矿坝边坡失稳判据研究[J].中国安全科学学报,2011,21(8):80-84.
[10]王炳文,张磊,赵彦昌,等.基于FLAC3D的尾矿库地震稳定性分析[J].金属矿山,2010(4):159-162.
[11]宋克勇,王延军,刘保松.基于FLAC3D的路基边坡稳定性数值分析[J].山东水利,2008(1):37-39,42.
[12]李明,梁力,王伟,等.有限元强度折减法求解坝坡抗滑稳定安全系数[J].中国安全生产科学技术,2012,8(2):83-87.
[13]陈国庆,黄润秋,石豫川,等.基于动态和整体强度折减法的边坡稳定性分析[J].岩石力学与工程学报,2014,33(2):243-256.
[14]Zhang K,Cao P,Bao R.progressive failure analysis of slope with strain-softening behaviour based on strength reduction method[J].Journal of zhejiang university-science a(applied physics&engineering),2013,14(2):101-109.
[15]Labuz J F,Zang A.Mohr-coulomb failure criterion[J].Rock Mechanics and Rock Engneering,2012,45(6):975-979.
[2]Zardari M A.Stability of tailings dams focus on numerical modeling[D].Sweden:LuleUniversity of Technology,2011.
[3]王晓涛,宁国立,陈国友.某铜矿尾矿坝稳定性分析研究[J].土木基础,2010,24(4):30-32,43.
[4]Choudhury D,Shukla J,Katdare A,et al.Slope stability and settlement analysis for dry bulk terminal at Mozambique:a case study[J].Electronic Journal of Geotechnical Engineering,2013,18(E):859-874.
[5]韩建波,张力霆,李强,等.流固耦合—强度折减法在尾矿坝稳定性分析中的应用[J].金属矿山,2011(11):29-32.
[6]张超,杨春和.有限差分强度折减法求解边坡稳定性[J].土木工程与管理学报,2011,28(2):17-21.
[7]郝全明,李帅,高国强,等.FLAC3D强度折减法在排土场边坡稳定性分析中的应用[J].采矿工程,2013(7):13-15.
[8]季聪,佴磊,马宏,等.FLAC3D强度折减理论在边坡稳定分析中的应用[J].世界地质,2013,32(1):158-164.
[9]王来贵,古新蕊.尾矿坝边坡失稳判据研究[J].中国安全科学学报,2011,21(8):80-84.
[10]王炳文,张磊,赵彦昌,等.基于FLAC3D的尾矿库地震稳定性分析[J].金属矿山,2010(4):159-162.
[11]宋克勇,王延军,刘保松.基于FLAC3D的路基边坡稳定性数值分析[J].山东水利,2008(1):37-39,42.
[12]李明,梁力,王伟,等.有限元强度折减法求解坝坡抗滑稳定安全系数[J].中国安全生产科学技术,2012,8(2):83-87.
[13]陈国庆,黄润秋,石豫川,等.基于动态和整体强度折减法的边坡稳定性分析[J].岩石力学与工程学报,2014,33(2):243-256.
[14]Zhang K,Cao P,Bao R.progressive failure analysis of slope with strain-softening behaviour based on strength reduction method[J].Journal of zhejiang university-science a(applied physics&engineering),2013,14(2):101-109.
[15]Labuz J F,Zang A.Mohr-coulomb failure criterion[J].Rock Mechanics and Rock Engneering,2012,45(6):975-979.
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