崩落法开采“悬留”大型采空区协同处置技术研究  

Study on the Collaborative Disposal Technology of Large-scale "Left Over" Goaf Mining by Caving Method

作　　者：汪为平[1,2] 陆玉根[1,2] 段庆豹 侯大德[1,2] 汪亮[1,2] 孙秀柱 Wang Weiping;Lu Yugen;Duan Qingbao;Hou Dade;Wang Liang;Sun Xiuzhu(Sinosteel Maanshan Institute of Mining Research Co.,Ltd.,Maanshan 243000,China;State Key Laboratory of Safety and Health for Metal Mines,Maanshan 243000,China;Chen Balhu Tianbao Mining Co.,Ltd.,Hulun Buir 021000,China;Anhui Academy of Coal Science,Hefei 230001,China)

机构地区：[1]中钢集团马鞍山矿山研究院有限公司,安徽马鞍山243000 [2]金属矿山安全与健康国家重点实验室,安徽马鞍山243000 [3]陈巴尔虎天宝矿业有限责任公司,内蒙古呼伦贝尔021000 [4]安徽省煤炭科学研究院,安徽合肥230001

出　　处：《金属矿山》2019年第7期8-13,共6页Metal Mine

基　　金：“十三五”国家重点研发计划项目(编号:2016YFC0600707)

摘　　要：无底柱分段崩落法主要通过崩落上覆围岩处理采空区,对于未冒落充填完毕的大型"悬留"采空区,其地压安全问题未得到根本解除。该类空区的体积范围达到一定程度后,易发生突然冒落失稳,产生较大冲击地压,对于井下人员及生产安全造成了重大威胁。以谢尔塔拉铁锌矿的"悬留"大型采空区为例,构建了一整套协同处置技术,分别采用数值模拟方法对其稳定性进行分析,采用封闭加井筒泄压方式处理采空区,同时构建了先进的微震监测网络,对岩层移动及采空区稳定性进行全天候跟踪监测分析和预警,实现了对空区的有效管控,对于存在该类"悬留"空区的矿山提供了可行的处置方案。The non-pillar sublevel caving method mainly treats the goaf by caving overlying surrounding rock,and for large“left over”goaf that have not been filled up,the issue of ground pressure safety has not been fundamentally lifted.When the volume of the goaf reaches a certain level,it is prone to cause sudden collapse and instability,resulting in a large impact pressure.It poses a major threat to personnel and production safety in the mine.Taking the“left over”goaf of Xieertala Pb-Zn Mine as the study example,a set of collaborative disposal technology is established to analyze its stability by means of numeri?cal simulation and treat the goaf by means of closed shaft to relieve pressure.At the same time,an advanced microseismic mon?itoring network is built to conduct all-weather tracking monitoring analysis and early warning to rock movement and goaf stabil?ity,and the goal of risk menagement and control for“left over”goal with large scale is realized.The above study results can provide a reliable disposal plan for mines with large-scale“left over”goaf.

关 键 词：地下开采 “悬留”采空区 协同处置技术 稳定性分析 微震监测 崩落法 

分 类 号：TD853[矿业工程—金属矿开采]