三山岛金矿分段空场嗣后充填采场结构参数设计  

Structural Parameter Design of Sublevel Open Stope and Backfilling in Sanshandao Gold Mine

作　　者：赵兴东[1] 周鑫[1] 魏慧 ZHAO Xingdong;ZHOU Xin;WEI Hui(Geomechanics Research Center,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学采矿地压与控制研究中心,辽宁沈阳110819

出　　处：《金属矿山》2022年第1期101-106,共6页Metal Mine

基　　金：“十三五”国家重点研发计划项目(编号:2016YFC0600803,2018YFC0604604,2018YFC0604401);国家自然科学基金-山东联合基金项目(编号:U1806208);中央高校基本科研业务费专项(编号:N2001033)。

摘　　要：合理的采场结构参数是保证深部矿山安全高效生产的前提。为应对深部金属矿山高应力、岩体质量变差这一问题,提出了一种分段空场嗣后充填采场结构参数设计方法。以岩体质量分级为基础,借助RMR临界跨度图表和Mathews稳定性图表初步确定采场结构参数;利用RS2数值软件和Mathews稳定性图表对采场稳定性进行分析,最终确定最优采场结构参数。以三山岛金矿分段空场嗣后充填法采场为研究对象,利用Q、RMR和GSI 3种岩体质量评价方法对采场矿岩进行岩体质量分级,并估算了其岩体力学参数,在此基础上计算得到两种采场结构参数方案,对最易发生失稳破坏的上盘围岩进行了稳定性分析,最终确定8 m×15 m×15 m作为最优尺寸,为矿山采矿方法设计提供了一定的依据。Reasonable stope structure parameters are the premise to ensure the safe and efficient production of deep mine.In order to deal with the problem of high stress and poor quality of rock mass in deep metal mines,a design method of structural parameters of sublevel open stope and subsequent filling stope is proposed.Based on the classification of rock mass quality,the structural parameters of stope are preliminarily determined by RMR critical span chart and Mathews stability chart,and then the optimal structural parameters of stope are determined by RS2 finite element numerical simulation software and Mathews stability chart.Taking the sublevel open stope and subsequent filling stope of Sanshandao Gold Mine as the research object,the rock mass quality of stope rock is classified by using Q,RMR and GSI rock mass quality evaluation methods,and the rock mass mechanical parameters are estimated.On this basis,two kinds of stope structure parameters are calculated,the stability of the hanging wall rock which is most prone to instability and damage is analyzed,and the optimal sizes of 8 m×15 m×15 m is finally determined,which can provide a certain basis for the design of mining methods.

关 键 词：深部开采 采场结构参数 岩体质量分级 Mathews 稳定性图表 数值模拟 

分 类 号：TD853[矿业工程—金属矿开采]