网络出版日期: 2024-07-03
基金资助
国家自然科学基金项目“深埋硬岩优势结构与卸荷破裂协同时变机制研究”(41877256)
Application of Three-dimensional Laser Scanning in Extracting Rock Mass Structure Information of Tunnel
Online published: 2024-07-03
针对接触式测量方法无法满足深部高陡岩体结构信息采集的要求，以金川二矿+650 m水平卸载站硐室掌子面为研究对象，采用三维激光扫描仪获取其表面点云数据集，并对点云数据进行处理提取岩体结构信息参数，并利用校核算法与地质测量结果验证数据的可靠性。结果表明：（1）通过对高精度获取的扫描数据进行快速处理，在控制点已知和未知的情况下，均可获取结构面的产状信息，降低了人员获取结构面信息的危险性；（2）利用最小二乘法计算产状、近似平行结构面组间距算法计算间距，以及将实测结构面产状与提取出来的结构面信息做差比较，可知倾向和倾角误差均在±6°范围以内，间距误差在±0.03 m以内，验证了提取数据的可靠性；（3）在金川二矿+650 m卸载站硐室掌子面结构面产状等信息的提取中应用了本文方法，有效识别了结构面产状信息。该项研究工作不仅避免了危险性，而且提高了精度与效率。
张浩, 卿黎, 邱士利, 寇永渊, 郭赟林, 夏胜衍 . 三维激光扫描在隧洞围岩结构信息获取中的应用研究[J]. 黄金科学技术, 2023 , 31(2) : 313 -322 . DOI: 10.11872/j.issn.1005-2518.2023.02.158
In view of the difficulties in collecting structural information of deep high-steep rock mass，the cumbersome data acquisition and the operation of personnel in high-risk environment，the contact measurement method has been unable to meet the requirements of collecting structural information of rock mass.Therefore， the chamber face of +650 m level unloading station of Jinchuan No.2 mine was taken as the research object，the 3D laser scanner was used to obtain its surface point cloud data set，and the point cloud data was denoised and spliced.After processing，the information parameters of rock mass structure were extracted，and the reliability of the data was verified by checking algorithm and geological survey results.The results show that：（1）Through rapid processing of high-precision scanning data，the occurrence information of structural plane can be obtained when the control point is known and the control point is unknown，which reduces the risk of personnel acquiring structural plane information.（2）The least square algorithm was used to calculate the attitude，the approximate parallel structural plane group spacing algorithm was used to calculate the spacing，and the measured structural plane attitude was compared with the extracted structural plane information.It is known that the inclination and inclination errors are within ±6°，and the spacing errors are within ±0.03 m，which verifies the reliability of the extracted data.（3）The method proposed in this paper was applied to the extraction of the occurrence of the structural plane of the chamber face of the +650 m level unloading station in Jinchuan No.2 mine，and the occurrence information of the structural plane is effectively recognized.This research work not only avoids the danger，but also improves the accuracy and efficiency.
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