基于点云数据的竖井井筒变形监测方法研究——以金川矿山新2号副井为例  

Research on monitoring method of shaft deformation based on point cloud data——Taking new No.2 Auxiliary shaft of Jinchuan Mine as an example

作　　者：赵其军[1] 刘祖昱 王俊超[1] 刘鹏山 靳博 钟峰越 ZHAO Qijun;LIU Zuyu;WANG Junchao;LIU Pengshan;JIN Bo;ZHONG Fengyue(Longshou Mine,Jinchuan Group Company Limited,Jinchang 737100,China)

机构地区：[1]金川集团股份有限公司龙首矿,甘肃金昌737100

出　　处：《建井技术》2024年第1期22-25,共4页Mine Construction Technology

摘　　要：竖井井筒的变形监测对于矿山安全生产具有重要的意义。以金川矿山新2号副井为例,基于2020年、2023年GeoSLAM(移动式三维激光扫描仪)获取的两期点云数据,采用模型切片的方法,分析了新2号副井1280~<1340、1340~<1400、1400~<1460m三个分段的竖井井壁变形情况,结果表明:1280~<1340m水平井筒断面尺寸整体上呈现缩小的状态,变形原因主要为后期返修导致断面规格发生变化;1340~<1400m水平在局部呈现断面尺寸增大的情况,且在三维模型上呈明显带状分布,但整体上井筒断面尺寸呈现缩小的状态,且分布于该中段各处位置,主要为地压原因导致的局部变形。从1400~<1460m水平井筒整体上看,断面规格上大于2020年模型断面,主要原因是施工断面设计存在不同,但在1437~1450m水平井筒断面尺寸表现出明显的断面缩小变形,变形原因为地压过大导致的局部凸出。The deformation monitoring of shaft is of great significance to mine safety production.Taking the new No.2 auxiliary shaft of Jinchuan Mine as an example,based on the two-period point cloud data obtained by GeoSLAM(mobile three-dimensional laser scanner)in 2020 and 2023,the model slicing method is adopted.The shaft wall deformation of new No.2 auxiliary shaft in 1280~<1340,1340~<1400,1400~<1460 m was analyzed.The results showed that the section size of 1280~<1340 m horizontal shaft decreased on the whole,and the main reason for the deformation was the change of section specifications caused by late repair.At the level of 1340~<1400 m,the section size of the shaft increased locally,and the distribution was obviously zonal in the three-dimensional model.However,the overall section size of the shaft decreased,and it was distributed in various parts of the middle section,mainly due to local deformation caused by ground pressure.On the whole,the 1400~<1460 m horizontal shaft had larger section specifications than the 2020 model section,mainly due to the different design of the construction section.However,the 1437~1450 m horizontal shaft section showed obvious section reduction deformation due to local protruding caused by excessive ground pressure.

关 键 词：竖井井筒 变形监测 GeoSLAM 点云数据 三维空间模型 

分 类 号：TD353[矿业工程—矿井建设]