A Study on the Extraction of Slope Surface Orientation using LIDAR with respect to Triangulation Method and Sampling on the Point Cloud

Lee, Sudeuk; Jeon, Seokwon

doi:10.7474/tus.2016.26.1.046

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…LiDAR measures the distance something is located away from the measurement equipment by emitting light and measuring the reflecting and returning light accurately. A total station, which is surveying equipment that uses a laser, measures a distance at a single point, one point at a time, whereas LiDAR has the advantage of quickly acquiring multiple points using a mirror that rotates rapidly [8].…”

Section: Principle Of Lidar Measurementmentioning

confidence: 99%

“…LiDAR, as 3D point cloud data can be easily acquired, has been utilized rapidly and widely in various sectors, including civil engineering, construction, aviation, archeology, geology, and the game and movie industries. In the rock engineering field, LiDAR has been employed for studies on the evaluation of joint roughness [1][2][3][4], trace sampling of joints [5][6][7], analysis of joint orientation [8], analysis of slope stability [9,10], analysis of rockfall and toppling [11,12], analysis of blasting over-break [13,14], and geometry research of underground mines [15]. The utilization of LiDAR is expected to increase in the future in study fields that require quantitative analysis.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analyzing the Stability of Underground Mines Using 3D Point Cloud Data and Discontinuum Numerical Analysis

Lee

Choi

2019

Sustainability

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This study describes a precise numerical analysis process by adopting the real image of mine openings obtained by light detection and ranging (LiDAR), which can produce a point cloud data by measuring the target surface numerically. The analysis target was a section of an underground limestone mine, to which a hybrid room-and-pillar mining method that was developed to improve ore recovery was applied. It is important that the center axis and the volume of the vertical safety pillar in the lower parts match those in the upper parts. The 3D survey of the target section verified that the center axis of the vertical safety pillar in the lower parts had deviated in a north-westerly direction. In particular, the area of the lower part of the vertical safety pillar was approximately 34 m 2 lower than the designed cross-sectional area, which was 100 m 2 . In order to analyze the stability of the vertical safety pillar, a discontinuum numerical analysis and safety factor analysis were conducted using 3D surveying results. The analysis verified that instability was caused by the joints distributed around the vertical safety pillar. In conclusion, investigation of the 3D survey and 3D numerical analysis techniques performed in this study are expected to provide higher reliability than the current techniques used for establishing whether mining plans require new mining methods or safety measures.Sustainability 2019, 11, 945 2 of 20 engineering, construction, aviation, archeology, geology, and the game and movie industries. In the rock engineering field, LiDAR has been employed for studies on the evaluation of joint roughness [1][2][3][4], trace sampling of joints [5][6][7], analysis of joint orientation [8], analysis of slope stability [9,10], analysis of rockfall and toppling [11,12], analysis of blasting over-break [13,14], and geometry research of underground mines [15]. The utilization of LiDAR is expected to increase in the future in study fields that require quantitative analysis.In this study, surveying was conducted using LiDAR to evaluate the stability of the safety pillar and stope in a mine where the hybrid room-and-pillar mining method was used, and the results were utilized directly to perform 3D stability analysis. Overview of the FieldThe target mine in this study, the Daesung MDI Donghae limestone mine, is located at Donghae-si, Gangwon-do, South Korea. Here, a test section of a horizontal cross-section (50 m × 50 m) around the Lv540 stope was excavated and mining work was conducted using the hybrid room-and-pillar mining method. This method is used to maximize ore recovery by collecting ores while ensuring the stability of stope using horizontal and vertical safety pillars. As shown in Figure 1, this mining method consists of a number of distinct steps: a step for gallery excavation (Figure 1a), a step for opening the upper stope (Figure 1b), a step for opening a middle stope (Figure 1c), a step for an additional opening for the upper stope (Figure 1d), a step for opening the lower stope (Figure 1e), and a s...

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Section: Principle Of Lidar Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analyzing the Stability of Underground Mines Using 3D Point Cloud Data and Discontinuum Numerical Analysis

Lee

Choi

2019

Sustainability

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Semi-automatic calculation of joint trace length from digital images based on deep learning and data structuring techniques

Lee

Kim

Choi

et al. 2022

International Journal of Rock Mechanics and Mining Sciences

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Stability Analysis of Pillar in Underground Limestone Mine Using 3D Scanning Techniques

Kim¹,

Kim

Baek³

2022

J. Korean Soc. Miner. Energy Resour. Eng.

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In this study, point-cloud data were obtained using a laser scanner for an underground limestone mine. A total of 581 discontinuities were extracted and statistically treated using the obtained point-cloud data, and a discrete fracture network was simulated and applied to the numerical analysis model. The stability was evaluated for two pillars located in large underground openings using the numerical analysis model. The evaluation results based on the safety factor and displacement showed that the safety factor tended to decrease as it progressed from the center of the pillar to the side wall. However, the pillars showed a minimum safety factor of 1.0 or higher. For the displacement, a maximum displacement of 9 mm occurred in a part of the pillar side wall. Nevertheless, the stability of the pillar was achieved, as it was insignificant compared to the size of the pillar.

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A Study on the Extraction of Slope Surface Orientation using LIDAR with respect to Triangulation Method and Sampling on the Point Cloud

Cited by 4 publications

References 11 publications

Analyzing the Stability of Underground Mines Using 3D Point Cloud Data and Discontinuum Numerical Analysis

Analyzing the Stability of Underground Mines Using 3D Point Cloud Data and Discontinuum Numerical Analysis

Semi-automatic calculation of joint trace length from digital images based on deep learning and data structuring techniques

Stability Analysis of Pillar in Underground Limestone Mine Using 3D Scanning Techniques

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