考虑应力场与渗流场耦合的尾矿坝非稳定渗流分析  

UNSTEADY SEEPAGE ANALYSIS OF TAILINGS DAMS CONSIDERING COUPLING OF STRESS AND SEEPAGE FIELDS

作　　者：柳厚祥[1] 李宁[1] 廖雪 龚锦林[3] 方凤华[3] 

机构地区：[1]西安理工大学岩土工程研究所,西安710048 [2]湖南省交通厅造价站,长沙410011 [3]长沙理工大学岩土工程研究所,长沙410076

出　　处：《岩石力学与工程学报》2004年第17期2870-2875,共6页Chinese Journal of Rock Mechanics and Engineering

摘　　要：根据尾矿坝形成的特点,进行考虑应力场与渗流场耦合的非稳定渗流分析。根据弹性力学和渗流理论提出了耦合问题的力学模型及其控制微分方程,然后导出这一问题的有限元计算公式及相应程序。在计算中首次导出了尾矿坝的渗透系数与应力场的关系式,并进行尾矿坝的非稳定渗流分析。工程实例计算结果表明,考虑耦合作用的影响。尾矿坝渗流场的总渗流量减小,而应力场的各应力分量的最大值增大。Based on the formation characteristics of tailings dams, the rigorous nonlinear analysis is made on the coupling of seepage and stress fields in tailings dams. Moreover, the governing differential equation is derived from the theory of elasticity and seepage on the coupling problem of stress and seepage fields. Then the corresponding finite element formulae and program are developed. Finally, the unsteady seepage analysis is made for the tailings dams. The result of an engineering example shows that the total seepage is less, but the maximum stress is bigger because of coupling considered.

关 键 词：尾矿坝 非稳定渗流分析 耦合分析 应力场 渗流场 

分 类 号：TD824.8[矿业工程—煤矿开采] TU441.33[矿业工程—矿山开采]