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| Study on coal pillar mining scheme of industry square mining in Jinggezhuang Mine |
| Zhang Lianzhong1,2 |
| 1. School of mining engineering, North China university of Technology Institute, Tangshan 063000, China; 2. Kailuan (group) Jinggezhuang Mining Branch, Tangshan 063000, China |
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Abstract Based on exhausted resource and difficult mining succession, two kinds of industry square mining plan were put forward, they are Nangongfang coal pillar peripheral symmetric coordinating skip clean mining and partial mining, the extreme value of ground movement and deformation and impact damage level were analyzed by MSAS. The result showed that the former technology fully takes account for the protection of building and equipment, ensures the cost and efficiency of production, as the final plan, it is more reasonable and provides theoretical basis for industry square coal pillar mining in Jinggezhuang Mine
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