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| Application of stacked beam support in long wall fully mechanized working face |
| Shi Zepo, Jiang Yongping, Ren Jianli, Zhang Jinqi, Xing Zhanjun, Gao Qiang |
| Xintun Mine, Jizhong Energy Fengfeng Group, Handan 053201, China |
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Abstract In order to solve trapezoidal coal loss mining close to roof and floor, Xintun Mine of Jizhong Energy Group adopted stacked beam support to enlarge the trapezoidal coal recycle. The practice showed that the loss coal height reduced from 3 m to 1 m after the new support, with an additional 1 2000 t coal, the roof maintenance difficulty decreased, the top support was improved, with promotional value.
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