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Techniques for Assessing and Mitigating Longwall Subsidence Effects on Highway Bridges

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Abstract

Surface subsidence events induced by underground longwall coal mining operations can cause various disturbances to surface structures ranging from integrity and stability to functionality problems. Highway bridges, as a kind of special road construction that can only tolerate smaller movements and deformations than road pavements, are particularly susceptible to severe influence caused by subsidence-induced ground movements and deformations. However, based on accurate subsidence prediction and correct influence assessments, efficient and effective mitigation and remediation measures can be designed and implemented to ensure the continuous service of bridges, safety of the travelers and smooth mining operations. In this paper, based on the predicted final and dynamic surface movements and deformations, the techniques to assess subsidence influence on the integrity, stability and functionality of bridge structures (e.g., decks, beams, abutments, etc.) are presented. A number of mitigation measures to protect the bridge structures are recommended along with an actual application case.

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Authors and Affiliations

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

    Yi Luo, Jian Yang & Hua Jiang

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  1. Yi Luo
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  2. Jian Yang
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  3. Hua Jiang
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Correspondence to Jian Yang.

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Luo, Y., Yang, J. & Jiang, H. Techniques for Assessing and Mitigating Longwall Subsidence Effects on Highway Bridges. Mining, Metallurgy & Exploration 37, 197–210 (2020). https://doi.org/10.1007/s42461-019-00111-w

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  • DOI: https://doi.org/10.1007/s42461-019-00111-w

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