Research on monitoring method of shaft deformation based on point cloud data——Taking new No.2 Auxiliary shaft of Jinchuan Mine as an example
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 1 280～＜1 340,1 340～＜1 400,1 400～＜1 460 m was analyzed.The results showed that the section size of 1 280～＜1 340 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 1 340～＜1 400 m,the section size of the shaft increased locally,and the distribution was obviously zonal in the three-dimen-sional model.However,the overall section size of the shaft decreased,and it was distributed in vari-ous parts of the middle section,mainly due to local deformation caused by ground pressure.On the whole,the 1 400～＜1 460 m horizontal shaft had larger section specifications than the 2020 model section,mainly due to the different design of the construction section.However,the 1 437～1 450 m horizontal shaft section showed obvious section reduction deformation due to local protruding caused by excessive ground pressure.
shaftdeformation monitoringGeoSLAMpoint cloud datathree-dimensional space model
万方数据
