The 2D and 3D Stability Analysis of Spreader for Open-Pit Iron Mine
To determine the safe distance between spreader and the upper verge of dump slope, a 2D and 3D slope model was built respectively, the limit equilibrium method and the finite element method with shear strength reduction technique (FEM-SSR) were introduced to analyze the stability of the spreader.For the slope under the action of variable external loads, the simple genetic algorithm (SGA) sometimes fails to converge to the global optimum, for this reason, an improved optimum maintaining simple genetic algorithm (OMSGA) was utilized to search for the critical slip surface, and the probability of the global convergence was improved greatly.On the basis of the three-dimensional elastic-plastic finite element model of the dump slope, the minimum sinkage of spreader track which interferes the spreaders normal operation was taken as the criterion to determine the safety factor, according to this idea, the deformation in the elastic stage during the process of strength reduction was considered, and a more reliable safety factor by the variable stiffness method was obtained.
Spreader Slope stability Safety factor OMSGA Variable stiffness parameter
Qian Xiaolei Ren Yunpeng Gao Suhe Wang Guoqiang
College of Mechanical Science and Engineering,Jilin University,Changchun 130022,China Northern Heavy-Industries Group Co.,Ltd,Shenyang 110141,China Taiyuan Heavy Industry Co.,Ltd,Taiyuan 030024,China
国际会议
香港
英文
263-268
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）