Numerical simulation and actual research on safety and suitable position of roadway driving along next goaf |
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Authors: | Chao-yu Hao Ji-ren Wang Cun-bao Deng Qing-sheng Wan |
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Affiliation: | [1]Research Institute of Safety Technology, Liaoning Technical University, Fuxin 123000, China [2]Shuangyashan Branch, Longmei Mining Group Co., Ltd., Shuangyashan 155100, China |
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Abstract: | In view of the stress concentration problem left by the joint coal seams mining since the reservation of the coal pillar, it was proposed that non-pillar mining technology be used in Dongrong No.2 coal mine. The numerical simulation software FLAC2D was used to draw the relationship between surrounding rock deformation of roadway driving along next goaf and the size of the coal pillar, so the safety and suitable position of roadway was determined. The distribution of lateral abutment pressure was measured by using the ZYJ-30 drilling stress gauge in the coal wall. The conclusions of the numerical simulation were verified. |
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Keywords: | roadway driving along next goaf numerical simulation width of coal pillar abutment pressure |
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