中关铁矿有轨运输巷底鼓变形监测分析及控制技术研究  

Monitoring Analysis and Control Technology of Floor Heave Deformation in Railway Transportation Roadway of Zhongguang Iron Mine

作　　者：王社光 于庆磊[3] 于兴社 蒲江涌 杨志强 田欣 WANG Sheguang;YU Qinglei;YU Xingshe;PU Jiangyong;YANG Zhiqiang;YIN Xin(Shahe Zhongguan Iron Mine Co.,Ltd.,Hebei Iron and Steel Group,Xingtai,Hebei 054100,China;Hebei Complex Iron Ore Low Carbon Intelligent and Efficient Mining Technology Innovation Center,Xingtai,Hebei 054100,China;School of Resources and Civil Engineering,Northeastern University,Shenyang,Liaoning 110819,China;Hebei Iron and Steel Group Mining Co.,Ltd.,Tangshan,Hebei 063100,China)

机构地区：[1]河北钢铁集团沙河中关铁矿有限公司,河北邢台市054100 [2]河北省复杂铁矿低碳智能高效开采技术创新中心,河北邢台市054100 [3]东北大学资源与土木工程学院,辽宁沈阳110819 [4]河北钢铁集团矿业有限公司,河北唐山市063100

出　　处：《矿业研究与开发》2024年第4期107-113,共7页Mining Research and Development

基　　金：河北省重点研发计划项目(20374103D)。

摘　　要：巷道围岩变形是影响其稳定性的重要因素之一。针对中关铁矿有轨运输巷道底鼓变形难题,采用激光扫描仪获取巷道变形后的目标点云数据并进行降噪处理,为克服巷道变形前源点云数据缺失问题,利用NURBS曲面建模技术构建变形前的源点云数据,并利用griddle网格工具进行加密;在此基础上,采用基于点到面(P2P)距离和K近邻算法,对巷道变形量进行计算和分析。结果表明,85.8%的区域底鼓变形值在30 cm以上,且呈现出明显的非均匀现象;根据巷道底鼓变形规律并结合现场实际,提出了“反底拱+锚网喷+短锚索”的组合支护修护方案,并对修复后的围岩稳定性进行分析,工程实践表明,巷道的变形趋势得到了有效控制,顶底板总移近量为52 mm,巷道两帮最大变形量约为39 mm,未再出现明显的底鼓现象。Deformation of the roadway surrounding rocks is one of the crucial factors affecting their stability.In response to the problem of floor heave deformation in railway transportation roadway of Zhongguan Iron Mine,a laser scanner was used to obtain the target point cloud data after roadway deformation and perform noise reduction processing.To overcome the problem of missing source point cloud data before roadway deformation,NURBS surface modeling technology was used to construct the source point cloud data before deformation,and griddle grid tool was used for encryption.On this basis,the deformation of the roadway was calculated and analyzed using the point-to-point(P2P)distance and K-nearest neighbor algorithm.The results show that 85.8%of the deformation values of the floor heave in the area are above 30 cm and exhibit obvious non-uniformity.Based on the deformation law of the roadway floor heave and combined with on-site practice,a combined support and repair plan of reverse bottom arch+anchor mesh spray+short anchor cable was proposed,and the stability of the repaired surrounding rock was analyzed.Engineering practice shows that the deformation trend of the roadway has been effectively controlled,with a total displacement of 52 mm for the roof and floor,and a maximum deformation of about 39 mm for both sides of the roadway.There is no obvious floor heave phenomenon again.

关 键 词：有轨运输巷道 变形监测 三维激光扫描 底鼓变形 底鼓控制 

分 类 号：TD325[矿业工程—矿井建设]