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Photogrammetry Method for Fast and Accurate Measurement of Strata Movements and Deformations for Scale Physical Mining Simulations

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Abstract

Scale physical models, constructed according to the principle of similarity theory, have been widely used to simulate the mining disturbances to surrounding strata and to evaluate the effectiveness of implemented ground control techniques. This technique has also been used for studying mining-induced surface and subsurface subsidence. The movements of the observation points installed on the physical model at different mining stages are currently measured using total station which is time-consuming and inaccurate especially on small scale models. A photogrammetry-based measurement system has been developed. During a physical modeling process, photos of the model can be taken during the simulation process reducing survey time from hours to a few seconds. A program, Photogrammetry Analysis for Physical Modeling of Mine Subsidence Process (PAPMMSP), developed based on photogrammetric principle is used to quickly identify the installed observation points and accurately determine their coordinates. The measurement accuracy is well under submillimeter level—an ultra-important advantage as any measurement errors in coordinates are magnified by the model dimension scale (commonly 20 to 400). A physical modeling case of subsurface strata movements and deformations associated with longwall mining operations is presented in the paper to demonstrate the functions and capabilities of the developed photogrammetry program.

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Authors and Affiliations

  1. Department of Mining Engineering, West Virginia University, Morgantown, WV, USA

    Yi Luo, Jian Yang & Yujia Lian

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  1. Yi Luo
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  2. Jian Yang
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  3. Yujia Lian
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Correspondence to Jian Yang.

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Luo, Y., Yang, J. & Lian, Y. Photogrammetry Method for Fast and Accurate Measurement of Strata Movements and Deformations for Scale Physical Mining Simulations. Mining, Metallurgy & Exploration 37, 1461–1473 (2020). https://doi.org/10.1007/s42461-020-00284-9

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  • DOI: https://doi.org/10.1007/s42461-020-00284-9

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