Study on Overburden Movement Deformation and Roof Breakage Law of Under-Protective Steeply Inclined Coal Seam Mining
Abstract
:1. Introduction
2. Roof Breaking Regular of Under-Protective Steeply Inclined Coal Seam Mining
2.1. Stress Analysis of Steep Roof
2.2. Analysis of the First Roof Collapse with the Thin-Plate Theory
2.3. Analysis in Normal Mining Stage with the Thin-Plate Theory
3. Similar Simulation Experiment of Overburden Movement Deformation of Under-Protective Steeply Inclined Coal Seam Mining
3.1. Experimental Model Design
3.2. Experimental Procedure
- (1)
- Lay the model
- (2)
- Layout of rock stratum mobile measuring points
- (3)
- Compensate stress
- (4)
- Excavation and data collection
3.3. Experimental Results
4. Analysis and Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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The Type of Plate | The Thin Films | The Thin Plate | The Thick Plate |
---|---|---|---|
The ratio of thickness (δ) to minimum side length (b) |
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Peng, X.; Qi, L.; Wang, Z.; Zhou, X.; Hua, C. Study on Overburden Movement Deformation and Roof Breakage Law of Under-Protective Steeply Inclined Coal Seam Mining. Sustainability 2022, 14, 10068. https://doi.org/10.3390/su141610068
Peng X, Qi L, Wang Z, Zhou X, Hua C. Study on Overburden Movement Deformation and Roof Breakage Law of Under-Protective Steeply Inclined Coal Seam Mining. Sustainability. 2022; 14(16):10068. https://doi.org/10.3390/su141610068
Chicago/Turabian StylePeng, Xinshan, Lingling Qi, Zhaofeng Wang, Xiaoqing Zhou, and Chunlei Hua. 2022. "Study on Overburden Movement Deformation and Roof Breakage Law of Under-Protective Steeply Inclined Coal Seam Mining" Sustainability 14, no. 16: 10068. https://doi.org/10.3390/su141610068