缓倾斜中厚矿体盘区式开采的微机化三维有限元研究

对缓倾斜中厚矿体的盘区式开采做三维有限元分析是一个有数以千计单元的大、中型算题,这将要求庞大的计算机内存,应用传统的链式结构程序是难以在微机上进行的。本文通过将传统链式程序结构变革为并列模块式的程序结构,并采用内存空间的数组动态定位等方法,解决了在微机上求解大题目的矛盾。文中简要介绍了基于该法开发的三维有限元微机程序及其前、后处理系统。应用本程序于河北某大型地下铁矿缓倾斜中厚矿体盘区开采的模拟和顶测,其结果获得了矿山认可。

3-D ELEMENT ANALYSIS OF PANEL MINING OF FLAT-DIPPING MIDDLE-THICK OREBODY ON A MICROCOMPUTER

In general, it is impossible to carry out 3-D FEM analysis on a microcom puter by using a traditional chain-structural FEM program, since it needs very much core memory because of thousands of elements. By changing the traditional chain structure into a parallel block structure and adopting the dynamic location of array in core, it has been realized to perform a large or middle scale calculation on a microcomputer. The 3-D finite element analysis of two panel mining plans of a flat-dipping middle-thick orebody at Xishimen Iron Mine,Hebei Province,has been made by using this program.Based on the calculation results,the stability of the slusher openings on immediate foot wall has been estimated,and suggestions put forward.