有轨运输无轨出矿联合工艺在某铜矿急倾斜中厚矿体中的应用及分析  

Application and Analysis of the Combined Process of Trackless Ore Extraction by Rail Transportation in the Steeply Inclined Medium-thick Orebody of a Copper Mine

作　　者：马正林 吴苏 张丹丹 刘明江 MA Zhenglin;WU Su;ZHANG Dandan;LIU Mingjiang(Kunming Branch of China Aluminum International Engineering Co.,Ltd.;School of Land and Re-sources Engineering,Kunming University of Science and Technology;Yunnan Key Laboratory of Sino-German Blue Mining and Utilization of Special Underground Space;Kuming Prospecting Design Institute of China Nonferrous Metals Industry Co.,Ltd.)

机构地区：[1]中铝国际工程股份有限公司昆明分公司 [2]昆明理工大学国土资源工程学院 [3]云南省中—德蓝色矿山与特殊地下空间开发利用重点实验室 [4]中国有色金属工业昆明勘察设计研究院有限公司

出　　处：《现代矿业》2021年第5期65-68,72,共5页Modern Mining

摘　　要：为了促进某矿急倾斜中厚矿体开采由传统的有轨向无轨化过渡,提出了有轨运输无轨出矿的联合工艺。结合香格里拉某铜矿采场的工程现状,对阶段空场法的底部结构和采准系统进行优化,采用FLAC3D有限差分法软件对优化后的底部结构进行数值模拟分析。结果表明:(1)有轨运输无轨出矿的联合工艺可运用于正在向无轨化开采转型的急倾斜中厚矿体采场中;(2)联合工艺的底部结构由无轨出矿水平和现有的有轨运输水平构成;(3)出矿联道与装矿进路的交叉口处出现了较明显的应力集中,相邻2条装矿进路之间的应力集中与位移变化呈连续分布。In order to promote the transition from traditional track to trackless mining of steeply inclined medium-thick ore bodies of a mine,a combined technology of trackless transportation and trackless extraction is proposed.Based on the current engineering status of a copper mine stope in Shangri-La,the bottom structure and the mining bare-field method of the stage empty field method are optimized,and the FLAC3D finite difference method software is used to perform numerical simulation analysis on the optimized bottom structure.The results show that:(1)The combined technology of track transportation and trackless extraction can be applied to the stope of steeply inclined medium-thick ore bodies that are transforming to trackless mining;(2)The bottom structure of the combined process consists of the trackless extraction level and the existing track transportation level;(3)Obvious stress concentration appears at the intersection of the exit link and the loading access road.The stress concentration and displacement changes between the two adjacent loading access roads are continuously distributed.

关 键 词：急倾斜中厚矿体 无轨开采 联合工艺 采场底部结构 数值模拟 

分 类 号：TD52[矿业工程—矿山机电]