尾矿堤坝高陡边坡非连续面拓扑优化技术(DTO)
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摘要
尾矿坝高陡边坡稳定性研究一直是矿山工程领域的热点,也是尾矿利用急需解决的技术难题。在极限分析研究的基础上,针对尾矿坝高陡边坡自身的特点,运用非连续面拓扑技术(DTO)对尾矿坝高陡复杂边坡稳定性进行研究,建立了尾矿坝高陡复杂边坡的破坏模式,同时深入分析DTO技术与其他计算方法的一致性和差异性。结果表明,对于复杂应力作用下、几何边界条件复杂、材料特性要求高的高陡边坡而言,DTO技术不仅计算效率高,且计算精度也较高,是一种可靠的边坡分析方法。
The stability study of high and steep slope of tailings dam is always a hot spot in the field of mine engineering and also a technical problem to be solved urgently in the utilization of tailings.On the basis of limit analysis and study,according to the characteristics of the high and steep slope of tailings dam,the non-continuous surface topological technology(DTO)is applied to study the stability of the high and steep complex slope of tailings dam,and the failure mode of the high and steep complex slope of tailings dam is established.Meanwhile,the consistency and difference between DTO technology and other computing methods are analyzed.The results show that DTO technology is highly efficient in calculation and calculation accuracy and is considered as a reliable slope analysis method for high and steep slope with complex stresses,complex geometric boundary conditions and high material properties.
The stability study of high and steep slope of tailings dam is always a hot spot in the field of mine engineering and also a technical problem to be solved urgently in the utilization of tailings.On the basis of limit analysis and study,according to the characteristics of the high and steep slope of tailings dam,the non-continuous surface topological technology(DTO)is applied to study the stability of the high and steep complex slope of tailings dam,and the failure mode of the high and steep complex slope of tailings dam is established.Meanwhile,the consistency and difference between DTO technology and other computing methods are analyzed.The results show that DTO technology is highly efficient in calculation and calculation accuracy and is considered as a reliable slope analysis method for high and steep slope with complex stresses,complex geometric boundary conditions and high material properties.
引文
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[2]陈祖煜.土质边坡稳定分析———原理方法程序[M].北京:中国水利水电出版社,2003.
[3]张奇华,邬爱清.边坡及洞室岩体的全空间块体拓扑搜索研究[J].岩石力学与工程学报,2008(10):2 072-2 078.
[4]王肇慧,肖盛燮,刘文方.边坡稳定性计算方法的对比分析[J].重庆交通学院学报,2005,24(6):99-103.
[5]姜朋明,盛欢,陆长锋,等.边坡极限承载力的严密解[J].工程力学,2009,26(S1):77-80.
[6]郑颖人,赵尚毅.岩土工程极限分析有限元法及其应用[J].土木工程学报,2005(1):91-98.
[7]陈祖煜.土力学经典问题的极限分析上、下限解[J].岩土工程学报,2002(1):1-11.
[8]赵尚毅,郑颖人,时卫民,等.用有限元强度折减法求边坡稳定安全系数[J].岩土工程学报,2002(3):343-346.
[9]邹广电.边坡稳定分析条分法的一个全局优化算法[J].岩土工程学报,2002(3):309-312.
[10]邹广电.边坡稳定分析条分法的的优化方法[J].水利学报,1989(2):55-60.