露天矿边坡及地表变形综合整治总体设计有限元计算

本文采用弹脆塑性有限元分析计算预测抚顺西露天矿边坡工程中的边坡岩体变形并模拟其治理措施。采用参数辨识的手段，结合弹脆塑性有限元分析程序，对边坡岩体的材料性能参数进行位移反分析，较准确地得到实际边坡结构的等效材料参数值。对１９８７年９月至１９９０年末期间开采过程的数值模拟再现了由于露天开采引起边坡与地表变形急剧增加的过程，对产生的原因给出了具有说服力的分析与论证。在此基础上，对边坡与地表在进一步的开采影响下可能产生的变形作了预测计算，并模拟了边坡整治措施对地表变形的影响。

FEM COMPUTATION ON THE OVERALL DESIGN OF UNIFIED REINFORCEMENT FOR OPEN-PIT AND GROUND-SURFACE DEFORMATION

The elasto-brittle-plastic finite element analysis has been taken on the predic-tion for the deformation of the north wall of Fushun west open-pit.Numerical simulationhas been made on the reinforcement measures of the slope structure.Using parameter i-dentification techniques and connecting with elasto-brittle-plastic finite element program,the displacement back analysis has been made on the material parameters of the rock-siope,the equivalent parameter values of the real slope structure have been obtained.Theprocess of the rapid increament of the slope's deformation caused by open mining during1987-1990 has been reappeared through the numerical simulation. Convincing analysis andproof have been given out for the cause of the rapid deformation increasing of the slope andsurface,On the basis of the above works,calculation has been made on the possible defor-mation caused by further excavation.