A human-machine interaction method for rock discontinuities mapping by three-dimensional point clouds with noises  

作　　者：Qian Chen Yunfeng Ge Changdong Li Huiming Tang Geng Liu Weixiang Chen 

机构地区：[1]Faculty of Engineering,China University of Geosciences,Wuhan,430074,China [2]Badong National Observation and Research Station of Geohazards,China University of Geosciences,Wuhan,430074,China

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2025年第3期1646-1663,共18页岩石力学与岩土工程学报(英文)

基　　金：supported by the National Key R&D Program of China(No.2023YFC3081200);the National Natural Science Foundation of China(No.42077264);the Scientific Research Project of PowerChina Huadong Engineering Corporation Limited(HDEC-2022-0301).

摘　　要：Rock discontinuities control rock mechanical behaviors and significantly influence the stability of rock masses.However,existing discontinuity mapping algorithms are susceptible to noise,and the calculation results cannot be fed back to users timely.To address this issue,we proposed a human-machine interaction(HMI)method for discontinuity mapping.Users can help the algorithm identify the noise and make real-time result judgments and parameter adjustments.For this,a regular cube was selected to illustrate the workflows:(1)point cloud was acquired using remote sensing;(2)the HMI method was employed to select reference points and angle thresholds to detect group discontinuity;(3)individual discontinuities were extracted from the group discontinuity using a density-based cluster algorithm;and(4)the orientation of each discontinuity was measured based on a plane fitting algorithm.The method was applied to a well-studied highway road cut and a complex natural slope.The consistency of the computational results with field measurements demonstrates its good accuracy,and the average error in the dip direction and dip angle for both cases was less than 3.Finally,the computational time of the proposed method was compared with two other popular algorithms,and the reduction in computational time by tens of times proves its high computational efficiency.This method provides geologists and geological engineers with a new idea to map rapidly and accurately rock structures under large amounts of noises or unclear features.

关 键 词：Rock discontinuities Three-dimensional(3D)point clouds Discontinuity identification Orientation measurement Human-machine interaction 

分 类 号：TN9[电子电信—信息与通信工程]