北洺河铁矿地表岩移特性与控制技术  

Characteristics and control technology of surface rock movement in Beiminghe Iron Mine

作　　者：王荣军[1] Wang Rongjun(Beiminghe Iron Mine of Hanxing Mining Industry Co.,Ltd.of China Minmetals Corporation)

机构地区：[1]五矿邯邢矿业有限公司北洺河铁矿,056300

出　　处：《黄金》2022年第12期39-43,共5页Gold

基　　金：国家自然科学基金重点项目(51534003);国家重点研发计划项目(2016YFC0801601)。

摘　　要：在采用崩落采矿法开采的金属矿床地下开采中,地表岩移控制对构筑物保护与土地占用时空至关重要。在现有研究已经查明塌冒散体对塌陷区实体边壁支撑作用的基础上,基于临界散体柱支撑作用,开发了用废石充填塌陷区控制岩移范围进一步扩展的技术。针对充填废石量不足条件下地表岩移控制问题,根据临界散体柱的支撑作用及北洺河铁矿地表岩移监测结果,研究了采空区大冒落到地表塌陷岩移的整个过程,分析了地表岩移特征与地表厚层松散岩层的作用,提出错动区边缘散体坝支撑技术。通过采用少量废石控制地表塌陷的敏感部位,经济安全地解决了北洺河铁矿地表岩移危害问题。In underground mines using caving mining methods,surface rock movement control is very important for the protection of structures and land occupation.Based on the existing research that has found the supporting effect of the collapsed medium on the walls of the bodies in the collapse zones and the supporting effect of the critical medium column,the technology of backfilling the collapsed area with a waste rock to control the rock movement range from further developing has been developed.For the case of surface rock movement control with insufficient waste rock backfills,based on the support of critical medium column and the monitoring results of surface rock movement,this paper studied the whole process from the great goaf caving to the surface subsidence and rock movement and analyzed the characteristics of surface and the effect of surface thick layer loose rock layer.At the same time,the supporting technology of a medium dam at the edge of a staggering area is proposed.Therefore,by using a small amount of waste rock to control the sensitive parts of surface subsidence,the damage of surface rock movement in Beiminghe Iron Mine was solved economically and safely.

关 键 词：崩落采矿法 地表岩移 控制坝 散体支撑 岩移特性 

分 类 号：TD853.36[矿业工程—金属矿开采]