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现代矿业 ›› 2014, Vol. 30 ›› Issue (05): 93-94+171.

• 安全·环保 • 上一篇    下一篇

基于UDEC的近距离煤层采空区下底板破坏特征分析

韩昌江   

  1. 山西晋神沙坪煤业有限公司
  • 出版日期:2014-05-15 发布日期:2015-08-13

Analysis on the Failure Characteristics of Infrabasal Plate of Close Coal Seam Mined-out Area Based on UDEC Software

Han Changjiang   

  1. Shanxi Jinshen Shanping Coal Mining Company Co.,Ltd.
  • Online:2014-05-15 Published:2015-08-13

摘要: 针对近距离煤层下层煤回采巷道受上层煤采动影响,其顶板岩层受到不同程度破坏、整体性相对较差,支护难度较大的问题,利用离散元软件UDEC对上下两层煤夹层厚度不同时下层煤顶板破坏特征及回采巷道稳定性进行了分析,为下层煤回采巷道选择合理支护方式及设计支护参数提供理论支持,具有一定的应用价值。

关键词: UDEC, 近距离煤层, 采空区下, 底板破坏特征

Abstract: For the close coal seam, the lower coal seam roadway is always influenced by the the upper coal seam, the roof strata of the close coal seam is damaged in different degree, It is so difficult to support the roof strata because its integrity is relatively poor.According to these problems,the discrete element software UDEC is adopted to analyze the failure characteristics of the lower coal seam roofs under the conditions of the difference of two layers coal interlayer thickness. Besides that, the the stability of mining roadway is also analyzed based on UDEC. Therefore, the research results can provide theoretical support for selecting the reasonable supporting pattern and designing the supporting parameters.

Key words: UDEC, Close coal seam, Infrabasal plate of mined-out area, Failure characteristics of infrabasal plate