基于散体承载特性的残矿回采范围优选研究  

Study on the optimization of the mining range of residual ore recovery under bearing capacity of granular

作　　者：喻宇航 吕鹏飞 卢悦 刘洋 YU Yuhang;LYU Pengfei;LU Yue;LIU Yang(School of Mining and Coal,Inner Mongolia University of Science&Technology,Baotou 014010,China;Baotou Steel Surveying and Mapping Research Institute,Baotou 014010,China)

机构地区：[1]内蒙古科技大学矿业与煤炭学院,内蒙古包头014010 [2]包钢勘察测绘研究院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2024年第4期348-352,共5页Journal of Inner Mongolia University of Science and Technology

基　　金：内蒙古自然科学基金面上项目(2023MS05028);内蒙古自治区直属高校基本科研业务费项目(2023QNJS091);内蒙古科技大学科研启动专项经费。

摘　　要：为了安全高效开采内蒙古某铁矿复杂空区群下的残矿,构建了考虑散体承载特性的采空区冒落拱受力分析模型,得出残矿的回采范围并分析了影响冒落拱高度的主要因素,在此基础上采用未知测度理论建立了残矿回采范围评价模型,对残矿回采范围进行了优化。研究结果表明,冒落散体的容重和内摩擦角与冒落拱高度成负相关,由于采空区内冒落散体的存在,散体侧压力会对采空区围岩起到支撑作用,从而限制了采空区围岩的损伤破坏;通过评价模型优选得出残矿回采的范围为1600~1640 m之间的2^(#)矿体(2P1~2P4勘探线之间)。研究结果可为空区隐患影响下的残矿回采提供技术参考。To safe and efficient exploit the residual ore under the complex goaf group of the iron mine in the Inner Mongolia,this study constructed an analysis model of caving arch force of goaf considering the bearing capacity of granular,obtained the recoverable range of the residual ore and analyzed the main factors affecting the caving arch height.On this basis,an evaluation model of the mining range of the residual ore was established using the theory of unknown measure,and the mining range of the residual ore was optimized.The results showed that the bulk weight and internal friction angle of the caving bulk were the negatively correlated with the height of the caving arch,and the lateral pressure of the bulk would play a supportive role for the surrounding rock in the goaf,thus the damage to the surrounding rock in the goaf was limited.Meanwhile,the model showed that the residual ore mining has a scope ranging from 1600 m to 1640 m between the 2 ore body(between 2P1 and 2P4 exploration line).The results of the research provided the technical reference for mining of residual ore under the complex goaf.

关 键 词：采空区 散体承载特性 残矿 未知测度理论 

分 类 号：TS749.7[轻工技术与工程—制浆造纸工程]