某露天铁矿地下采空区废石充填胶结加固研究  

Study on Waste Rock Cemented Filling for the Underground Goafs in an Iron Mine

作　　者：罗英嘉 陈晓青 LUO Yingjia;CHEN Xiaoqing(School of Mining Engineering,University of Science and Technology Liaoning,Anshan,Liaoning 114051,China;Angang Group Mining Design and Resarch Institute Co.,Ltd.,Anshan,Liaoning 114000,China)

机构地区：[1]辽宁科技大学矿业工程学院,辽宁鞍山市114051 [2]鞍钢集团矿业设计研究院有限公司,辽宁鞍山市114000

出　　处：《矿业研究与开发》2022年第3期28-33,共6页Mining Research and Development

基　　金：国家自然科学基金项目(51174110)。

摘　　要：露天矿地下采空区的存在对矿山安全生产是一种极大的隐患。针对某露天铁矿一些特殊部位的采空区,如最终边帮下方或地表构筑物下方,因为无法通过爆破崩落法处理,采用胶结充填加固处理为最佳。根据采空区地质现状和充填治理工艺,经测算试验得到所需的最大注浆压力等数据。参考注浆料的制备工艺和基本性能要求,配置不同的注浆料进行试验和测算,选定最佳的注浆料:5%水泥、95%碎石粉,1∶4水灰比。使用该材料充填采空区可以完全满足要求,保证了边坡的稳定。The existence of underground goafs in open-pit mine is a great hidden danger to mine safety production.For the goaf in some special parts of an open-pit iron mine,for example,under the final slope or under the surface structure,due to the blasting caving method cannot be used,the cemented filling reinforcement is the best choice.According to the geological status of goaf and filling treatment technology,the required maximum grouting pressure and other data are obtained through calculation and test.With a reference to the preparation process and basic performance requirements of grouting materials,different grouting materials are configured for test and calculation,and the best grouting material is selected with cement of 5%,crushed stone powder of 95%,and cement-sand ratio of 1∶4.When the material is used to fill the goaf,it can totally meet the requirements and ensure the stability of the side slope.

关 键 词：充填材料 胶结充填 采空区处理 充填体 

分 类 号：TD853.391[矿业工程—金属矿开采]