基于三维激光点云技术的岩体结构面智能解译

陈娜; 蔡小明; 夏金梧; 张绍和; 姜清辉; 史超

doi:10.3799/dqkx.2020.282

Volume 46 Issue 7

Jul. 2021

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Article Navigation > Earth Science > 2021 > 46(7): 2351-2361

Chen Na, Cai Xiaoming, Xia Jinwu, Zhang Shaohe, Jiang Qinghui, Shi Chao, 2021. Intelligent Interpretation of Rock Mass Discontinuity Based on Three-Dimensional Laser Point Cloud. Earth Science, 46(7): 2351-2361. doi: 10.3799/dqkx.2020.282

Citation:

Chen Na, Cai Xiaoming, Xia Jinwu, Zhang Shaohe, Jiang Qinghui, Shi Chao, 2021. Intelligent Interpretation of Rock Mass Discontinuity Based on Three-Dimensional Laser Point Cloud. Earth Science, 46(7): 2351-2361. doi: 10.3799/dqkx.2020.282

Citation:

Chen Na, Cai Xiaoming, Xia Jinwu, Zhang Shaohe, Jiang Qinghui, Shi Chao, 2021. Intelligent Interpretation of Rock Mass Discontinuity Based on Three-Dimensional Laser Point Cloud. Earth Science, 46(7): 2351-2361. doi: 10.3799/dqkx.2020.282

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Intelligent Interpretation of Rock Mass Discontinuity Based on Three-Dimensional Laser Point Cloud

doi: 10.3799/dqkx.2020.282

1.
School of Civil, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China
2.
Changjiang Institute of Survey, Planning, Design and Research Co. Ltd., Wuhan 430010, China
3.
Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of Education, School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
4.
School of Civil Engineering, Wuhan University, Wuhan 430072, China

Received Date: 2020-10-04
Publish Date: 2021-07-15

Abstract

Abstract

The stability of rock mass is mainly controlled by a large number of internal discontinuities. Therefore, the accurate and efficient extraction of discontinuity information is a significant process to analyze the stability of rock mass. In the paper, the raw point cloud data is collected by three-dimensional laser scanner, a new approach about automatic extraction of discontinuity is proposed based on point cloud model of rock mass, which can automatically decipher the parameters of rock mass discontinuities. The new sampling method and evaluation method are successfully introduced based on the modified Ransac algorithm, the efficiency and accuracy of Ransac algorithm are rapidly improved to adapt rough point cloud data of rock mass. The modified Graham Scan algorithm is proposed to delineate the convex-concave boundary and to calculate the size for discontinuity. Based on the above algorithms, this paper developed a discontinuity extraction program named RDD (ransac discontinuity dtection). RDD is tested by two sets of standard geometry data and one set of rock mass data. The results indicate that the orientation error of standard geometry is less than 1ånd the maximum error of rock is less than 6°, which satisfy the prescriptive error requirements of engineering.
- three-dimensional laser point cloud,
- discontinuity,
- Ransac algorithm,
- Graham Scan algorithm,
- engineering geology

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References(45)

References

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Intelligent Interpretation of Rock Mass Discontinuity Based on Three-Dimensional Laser Point Cloud

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