充填接顶率对采场顶板稳定性影响的数值模拟研究  

Numerical Simulation Research for the Influence of Roofcontacted Filling Rate on the Stability of Stope Roof

作　　者：朱鹏瑞[1,2] 王东旭[1,2] 宋卫东[1,2] 张兴才[3] 周家祥[3] 

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [2]北京科技大学土木与环境工程学院,北京100083 [3]武汉钢铁集团矿业有限责任公司大冶铁矿,湖北黄石市435006

出　　处：《矿业研究与开发》2015年第5期39-42,共4页Mining Research and Development

基　　金：国家自然科学基金项目(51374033);博士点基金项目(20120006110022)

摘　　要：大冶铁矿目前采用分段空场嗣后胶结充填采矿法开采。充填接顶是充填工作的重要内容,直接关系到采场的稳定和安全。通过FLAC3D数值模拟研究接顶率分别为30%、50%、80%和100%时顶板应力与塑性区分布的情况,分析充填体接顶率与顶板稳定性之间的关系,研究结果表明:安全的充填接顶率应在50%以上。The sublevel open stoping with subsequent cementing filling is used in Daye iron mine.Roof-contacted filling rate,as an important factor for filling,directly relates to the stability and security of stope.The roof stress and the plastic zone under the roof-contacted filling rates of 30%,50%,80% and 100% were simulated and studied by FLAC3 D,and the relationship between roof-contacted filling rate and stability of roof was analyzed.The research results showed that the safe roof-contacted filling rate should be above 50%.

关 键 词：充填采矿法 充填接顶率 数值模拟 顶板稳定 

分 类 号：TD853.34[矿业工程—金属矿开采] TD327.2[矿业工程—矿山开采]