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Excavation methods and stability control strategies for gob-side roadways based on spatiotemporal evolution.
Renliang Shan1, Xinpeng Zhao2, Junwei Huang1
1School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China.
Scientific Reports
|July 27, 2025
Summary
This study on gob-side roadway construction in coal mining found that an adjacent mining and driving scheme improves stability. A segmented support strategy is recommended for areas near working faces.
Area of Science:
- Mining Engineering
- Geotechnical Engineering
- Rock Mechanics
Background:
- Single-wing mining presents production succession challenges.
- Gob-side roadways are crucial for efficient mine development.
- Understanding roadway-working face interactions is vital for stability.
Purpose of the Study:
- To analyze the spatiotemporal relationship between gob-side roadways and overlying working faces.
- To evaluate the impact of different excavation strategies on roadway stability.
- To propose an optimized support strategy for gob-side roadways.
Main Methods:
- Theoretical analysis of roadway-working face interactions.
- Numerical simulations to model surrounding rock deformation.
- Field investigation at Fenyuan Coal Mine's 5-1081 roadway.
Main Results:
- The adjacent mining and driving scheme enhances surrounding rock stability.
- Roadway deformation is asymmetric, with critical zones near working face intersections.
- A key reinforcement zone is identified from 40m before to 60m after the intersection.
Conclusions:
- The adjacent mining and driving scheme effectively mitigates succession constraints.
- A segmented support strategy optimizes safety and efficiency.
- Findings offer practical guidance for similar mining conditions.
Keywords:
Advancing excavationDynamic pressureNumerical simulationRoadway stabilitySpatiotemporal relationshipMore Related Videos
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