开采地表移动的微机化三维有限元分析

THE ANALYZING OF GROUND SURFACE MOVEMENT DUE TO MINING USING 3-D FINITE ELEMENT METHOD ON MICROCOMPUTERS

本文提出了开发三维有限元微机应用的重要性和实用方法,并简要介绍了作者针对采矿工程特点而发展的非线性三维有限元微机程序及其前、后处理系统。然后,将它应用于河北西石门铁矿盘区开采的地表移动分析;给出了三维下沉盆地随开采推进的发展过程以及水平移动、地表倾斜和水平变形等计算结果。研究表明,微机化三维有限元是矿山地表移动分析的一种有前途的方法,具有显著的实用性和经济意义。

This paper presents a practical approach for exploiting the application of three-dimensional finite element method on mining engineering by means of microcomputers. A 3-D nonlinear FEM microcomputer program (including pre and post proccesing systems), which was recently developed for mining practices by the authors , is described briefly . The analyses of ground surface movement due to mining for flat-dipping middle-thick orebody in Xishimen Iron Mine , Hebei Province , are made by using this program; and three-dimensional subsidence basin , horizontal movement , surface tilt , surface curvature , and horizontal strain are given . The above indicates that developing the applications of 3-D FEM on microcomputers for ground surface movement due to mining has a great future practically and economically.