特大型条形矿柱卸压开采技术研究  

Study on De-stress Mining Technology of Super Large Strip Pillar

作　　者：张少杰[1,2] 张爱民 刘育明[1,2] 杨志国 ZHANG Shaojie;ZHANG Aimin;LIU Yuming;YANG Zhiguo

机构地区：[1]中国恩菲工程技术有限公司,北京100038 [2]深部金属矿采动地压灾害防控国家矿山安全监察局重点实验室,北京100038

出　　处：《中国矿山工程》2024年第1期7-14,共8页China Mine Engineering

基　　金：国家重点研发计划(2023YFC2907201)“金属矿深部大盘区无矿柱连续化开采技术与装备”。

摘　　要：某铁矿为超大规模超深井矿山,矿体特别厚大,在盘区之间布置了特大型条形矿柱,本文采用数值模拟方法,对特大型条形矿柱采取不同卸压开采方案后的应力特征和塑性区分布进行了对比研究,揭示了不同卸压方案的卸压效果,提出了“先进路法卸压、后中深孔或深孔充填法回采”的盘区矿柱回收方法,研究结果可为类似开采条件下的卸压开采提供参考。In a super-scale and deep mine,the ore body is extremely thick and large.Extra large strip ore pillars are arranged between the panels.In this paper,the numerical simulation method is used to conduct a comparative study on the stress characteristics and plastic zone distribution of different de-stress schemes applied on the strip pillar.The effect of different de-stress schemes was revealed.A recovery method of strip ore pillar is put forward,which is"the first step:drift de-stress stoping;the second step:medium-long hole or long hole stoping with backfilling".Its results can provide reference for de-stress mining under similar mining conditions.

关 键 词：深井开采 条形矿柱 卸压开采 数值模拟 

分 类 号：TD853[矿业工程—金属矿开采]