Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)

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Mechanical Response of Fractured Gangue Under Lateral Compression In Mined-Out Zones

Authors
Yu Yang1, Shengyang Song1, *, Pengfei Liang2
1School of Civil Engineering, Liaoning University of Engineering and Technology, Fuxin, 123000, China
2School of Civil Engineering, Xinjiang Institute of Engineering, Urumqi, 830000, China
*Corresponding author. Email: 482853315@qq.com
Corresponding Author
Shengyang Song
Available Online 28 July 2025.
DOI
10.2991/978-94-6463-793-9_90How to use a DOI?
Keywords
broken gangue; axial stress; water content; coefficient of dilation
Abstract

This study investigates the compaction characteristics of fragmented gangue in residual mining areas, addressing stability challenges during upward mining of abandoned coal resources in China. Through confined compression tests using a WES-1000B electro-hydraulic servo testing machine, we examined the compaction behavior of in-situ sandy mudstone gangue under varying axial stresses (4–20 MPa) and moisture contents (0%-6%). The results reveal three distinct compaction phases: rapid densification (0–1.77 MPa), particle crushing and compaction (1.77–10 MPa), and stable compaction (10–20 MPa). Axial strain demonstrates logarithmic growth with increasing stress. Moisture content exhibits a nonlinear influence on compression deformation, with peak strain observed at 4% water content. The bulking factor decreases progressively with higher axial stress, reaching its minimum at 20 MPa axial stress and 4% moisture content. These findings elucidate the compaction mechanisms of fractured gangue and provide theoretical foundations for evaluating floor stability in upward mining of abandoned coal seams.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)
Series
Atlantis Highlights in Engineering
Publication Date
28 July 2025
ISBN
978-94-6463-793-9
ISSN
2589-4943
DOI
10.2991/978-94-6463-793-9_90How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Yu Yang
AU  - Shengyang Song
AU  - Pengfei Liang
PY  - 2025
DA  - 2025/07/28
TI  - Mechanical Response of Fractured Gangue Under Lateral Compression In Mined-Out Zones
BT  - Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)
PB  - Atlantis Press
SP  - 1053
EP  - 1064
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-793-9_90
DO  - 10.2991/978-94-6463-793-9_90
ID  - Yang2025
ER  -