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Study on Roof Deformation Mechanism and Dynamic Staged Control of Heading Area in Rapid Tunneling

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Iranian Journal of Science and Technology, Transactions of Civil Engineering Aims and scope Submit manuscript

Abstract

Aiming at the problem that there are many factors influencing the stability of heading roof, and the unreasonable value of parameters leads to the low efficiency of heading, the mechanical model of heading roof is established, and the law of bending and sinking of roof is analyzed, based on the criterion of roof instability, the reasonable parameters of influencing factors under different roof strata structure are obtained. Considering the space–time effect of the roadway excavation face, the stress monitoring method of the full-section bolt is adopted to analyze the stress of the bolt in the supporting position, the primary position and secondary position of bolt support and the relationship between them and heading position are determined, and the “Driving-bolting integrated fast-driving sub-support technology” is put forward. Based on the above research results and the complete set of equipment of rapid tunneling system, the original tunneling process flow is optimized and applied in 150,802 transportation roadway of Liuzhuang coal mine, and the parallel excavation in time and space is realized. The excavation speed reaches 507 m per month, and the whole roadway is stable.

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Data Availability

The data used in the field measurement can be obtained from the corresponding author upon request.

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Acknowledgements

All authors contributed to this article. I would like to thank my tutor Professor **nzhu Hua for his guidance on this paper; Huaibin Li reviewed and modified the manuscript.

Funding

We acknowledge the financial support for this work provided by the National Natural Science Foundation of China (Grant No. 51774010).

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Authors and Affiliations

  1. State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science and Technology, Huainan, 232001, Anhui, China

    Sen Yang, **nzhu Hua & Huaibin Li

Authors
  1. Sen Yang
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  2. **nzhu Hua
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  3. Huaibin Li
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Corresponding author

Correspondence to Sen Yang.

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Yang, S., Hua, X. & Li, H. Study on Roof Deformation Mechanism and Dynamic Staged Control of Heading Area in Rapid Tunneling. Iran J Sci Technol Trans Civ Eng 47, 3867–3883 (2023). https://doi.org/10.1007/s40996-023-01202-x

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  • DOI: https://doi.org/10.1007/s40996-023-01202-x

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