矿山节理岩体数字化测量及巷道模型破坏特征  

Digital Measurement of Jointed Rock Mass in Mines and Failure Characteristics of Tunnel Model

作　　者：熊赞民 张杰 王恒涛 王筱添 XIONG Zanmin;ZHANG Jie;WANG Hengtao;WANG Xiaotian(China ENFI Engineering Corporation,Beijing 100038,China;Key Laboratory of Prevention and Control to Mining Ground Pressure Disaster in Deep Metal Mines of State Mine Safety Supervision Bureau,Beijing 100038,China;Changsha Institute of Mining Research Co.,Ltd.,Changsha,Hunan 410012,China)

机构地区：[1]中国恩菲工程技术有限公司,北京100038 [2]深部金属矿采动地压灾害防控国家矿山安全监察局重点实验室,北京100038 [3]长沙矿山研究院有限责任公司,湖南长沙410012

出　　处：《矿业研究与开发》2024年第11期137-143,共7页Mining Research and Development

基　　金：国家重点研发计划资助项目(2023YFC2907201)。

摘　　要：随着空间信息获取技术的蓬勃发展,三维地质矿产测量与可视化已成为数字化矿山建设的重要内容,对于提高工程设计水平、保证工程安全运行具有重要意义。借助超视距非接触式三维激光扫描测量方法,对某铜铅锌多金属矿井下开展三维激光扫描,精准测量工程岩体表面三维空间坐标,获取三维激光点云数据,根据识别的岩体结构面产状信息,采用3DEC软件中离散断裂网络(DFN)建立三维巷道数值模型,分析了节理裂隙影响的巷道围岩破坏特征。结果表明:矿区巷道内结构面较发育,基本上有3组优势结构面,2个分段水平优势结构面产状较一致;节理裂隙巷道的主要破坏形式为边帮剥落和顶板冒落,巷道两帮和拱肩部位分布较多的张拉-剪切微裂纹,端部主要产生张拉裂纹。研究结果实现了矿产资源开发的三维可视化应用,为矿山的智能开采提供了重要依据。With the vigorous development of spatial information acquisition technology,three-dimensional geological mineral measurement and visualization have become an important part of digital mining construction,which is of great significance for improving engineering design level and ensuring safe operation of engineering.With the help of the beyond line of sight noncontact 3Dlaser scanning measurement method,a 3Dlaser scanning was carried out underground in a certain mine to accurately measure the 3Dspatial coordinates of the engineering rock surface and obtain the three-dimensional laser point cloud data.According to the identified occurrence information of rock mass structural plane,a three-dimensional tunnel model was established using the Discrete Fracture Network(DFN)in 3DEC software.The failure characteristics of the surrounding rocks of the tunnel affected by joint fractures were analyzed.The results show that the structural planes in the tunnel of the mining area are relatively developed,there are basically three groups of dominant structural planes,and the occurrence of the two sublevel dominant structural planes is relatively consistent.The main failure forms of the joint fracture tunnel are edge peeling and roof caving.There are many tension-shear micro fractures distributed on the edge and arch shoulder of the tunnel,and tensile fractures are mainly produced at the end.The research results have achieved the three-dimensional visualization application of mineral resource development,and provide an important basis for the intelligent mining of mines.

关 键 词：矿山数字化测量 节理岩体 三维激光扫描 离散断裂网络 破坏特征 

分 类 号：TD450[矿业工程—矿山机电]