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Home > Archive>Volume 50, Issue S1, 2023 >514-519. DOI:10.12143/j.ztgc.XXXX.XX.001
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The application of close-up photogrammetry technology in characteristics research of rock mass fractures in trenchless
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1.Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring,Ministry of Education， Changsha Hunan 410083, China;2.School of Geosciences and Info-Physics， Central South University, Changsha Hunan 410083, China;3.Changsha Natural Resources Comprehensive Survey Center， China Geological Survey, Changsha Hunan 410083, China;4.China Petroleum Pipeline Engineering Co., Ltd., Langfang Hebei 065000, China;5.Northwest Engineering Corporation Limited, Xi’an Shaanxi 710065, China;6.Xi’an Research Institute of China Coal Technology & Engineering Group, Xi’an Shaanxi 710054, China

Clc Number:

P642;P634.7

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    Abstract:

    The accurate acquisition and analysis of fracture structure of rock mass is of great significance for the stability analysis of trenchless drilling rock mass in ecologically fragile areas. Based on close-up photogrammetry technology， this paper uses PhotoModeler Scanner software to process the feature point distortion and noise removal of multi-directional rock mass images to achieve accurate extraction of three-dimensional information of dense point clouds， and then establish a triangular mesh， establish dense surfaces according to the triangular network， and finally render the surfaces through data visualization to realize the three-dimensional modeling of rock masses. The established 3D model fracture morphology tends to be consistent with the original fracture， which can realize non-destructive picking and observation of fracture length， average width， area and other parameters， and compare the obtained fracture information， and the results are consistent with the visually reflected fracture development degree.

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History
  • Received:June 27,2023
  • Revised:August 14,2023
  • Adopted:August 14,2023
  • Online: October 21,2023
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