RM2D: An automated and robust laser-based framework for mobile tunnel deformation detection

Chen, Boxun; Zhao, Ziyu; Bi, Lin; Wang, Zhuo

doi:10.1016/j.undsp.2024.07.002

Underground Space

2025

DOI: 10.1016/j.undsp.2024.07.002

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RM2D: An automated and robust laser-based framework for mobile tunnel deformation detection

Boxun Chen,

Ziyu Zhao,

Lin Bi

et al.

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A LiDAR-Based Backfill Monitoring System

Xu,

Huang,

et al. 2024

Applied Sciences

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A backfill system in underground mines supports the walls and roofs of mined-out areas and improves the structural integrity of mines. However, there has been a significant gap in the visualization and monitoring of the backfill progress. To better observe the process of the paste backfill material filling the tunnels, a LiDAR-based backfill monitoring system is proposed. As long as the rising top surface of the backfill material enters the LiDAR range, the proposed system can compute the plane coefficient of this surface. The intersection boundary of the tunnel and the backfill material can be obtained by substituting the plane coefficient into the space where the initial tunnel is located. A surface point generation and slurry point determination algorithm are proposed to obtain the point cloud of the backfill body based on the intersection boundary. After Poisson surface reconstruction and volume computation, the point cloud model is reconstructed into a 3D mesh, and the backfill progress is digitized as the ratio of the backfill body volume to the initial tunnel volume. The volumes of the meshes are compared with the results computed by two other algorithms; the error is less than 1%. The time to compute a set of data increases with the amount of data, ranging from 8 to 20 s, which is sufficient to update a set of data with a tiny increase in progress. As the digitized results update, the visualization progress is transmitted to the mining control center, allowing unexpected problems inside the tunnel to be monitored and addressed based on the messages provided by the proposed system.

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A LiDAR-Based Backfill Monitoring System

Xu,

Huang,

et al. 2024

Applied Sciences

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RM2D: An automated and robust laser-based framework for mobile tunnel deformation detection

Cited by 1 publication

References 35 publications

A LiDAR-Based Backfill Monitoring System

A LiDAR-Based Backfill Monitoring System

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