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| Study on air leakage law of cross ditch mining in No.30116 Face of Yanghuopan Mine |
| Zhen Ze, Su Wei |
| Yulin Yanghuopan Coal Co., Ltd., Yulin 719300, China |
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Abstract Yanghuopan Mine is a typical shallow coal seam mine. In order to make a more comprehensive research and analysis on the development and change law of the overlying rock cracks in the stope under this special geological environment and the development characteristics of the ventilated cracks at the top of the working face, the physical similarity experiment method was used to simulate the development law of the cracks in the goaf area, and the development status of the gas-conducting cracks in the overlying rock in the mining stage of this type of coal seam was found. The numerical simulation showed that the use of plugging and other prevention and control measures could greatly reduce the air leakage in the stope, and the main process parameters such as the viscous resistance, spacing and construction period of the surrounding rock of the roadway were also determined. No. 30116 Face was taken as the main research object, the fracture development process of this face in the development process was restored, and proved the effectiveness of the simulated control measures parameters through practice. The research had guided the prevention and control of residual coal spontaneous combustion and water in the goaf of coal mine production, and had good economic benefits for the safe and efficient production of the mine.
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