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| Study on movement law of overlying strata in excavation process based on UDEC |
| LI Liwei |
| 1.School of Mining and Surveying Engineering，Hebei University of Engineering, Handan 056038, China；2. Collaborative Innovation Center of Comprehensive Development and Utilization of Hebei Coal Resource, Handan 056038, China |
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Abstract According to geological data of 0401 working face in Fenxi Runtai Coal Mine Zhengming Coal Industry Corporation Ltd., UDEC numerical simulation was utilized to simulate the excavation of 0401 face by monitoring sinking displacement and stress changing process of different strata in excavation step by step to study the movement law of overlying strata in the process of Coal seam excavation. So that the movement and deformation law of overlying strata after gradual excavation of coal seam was obtained. And then provided relevant basis to coal mine roof rock strata control.
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