采矿与安全工程学报 ›› 2014, Vol. 31 ›› Issue (1): 134-138.

• 论文 • 上一篇    下一篇

深部工作面煤体扩容影响因素及扩容预测

  

  1. 1.安徽理工大学深部煤矿采动响应与灾害防控安徽省重点实验室,安徽 淮南 232001; 2.北京科技大学土木与环境工程学院,北京 100083;3.淮南矿业集团有限责任公司,安徽 淮南 232001
  • 出版日期:2014-01-15 发布日期:2014-02-26
  • 作者简介:胡祖祥(1978-),男,安徽省安庆市人,博士,讲师,从事矿井瓦斯灾害防治究工作。 E-mail:zxhu@aust.edu.cn Tel:13955452998
  • 基金资助:

    国家重点基础研究发展计划(973)项目(2010CB226806);国家自然科学基金项目(51174003,51104004)

Research on the dilatancy influencing factors and dilatancy prediction in deep working face coal seam

  • Online:2014-01-15 Published:2014-02-26

摘要: 依据含瓦斯煤力学试验,综合分析含瓦斯煤破坏变形特征与工作面煤体受力环境,采用模糊综合分析法,确定工作面煤体扩容重要因素及其权重;基于二元离散理论,构建工作面煤体扩容预测判别模型。研究表明,采动应力、含瓦斯煤的抗压强度、原岩应力是工作面煤体扩容关键影响因素,而采动应力是其主控因素,降低采动应力是控制深部煤体扩容的最有效途径。创建了以采动应力为主控因素,二元离散判据的工作面煤体扩容预测新方法,达到了工作面煤体扩容有效预测与防控的目的。

关键词: 煤体扩容, 影响因素, 重要度, 扩容预测

Abstract: This paper has conducted a comprehensive analysis on damage deformation characteristics of coal containing gas and working face coal stress environment based on coal containing gas mechanics experiment. The fuzzy comprehensive analysis method is used, and influencing factors and its significance of dilatancy is determined in the working face coal seam. Using the Binary Choice Model, dilatancy prediction discriminant model in working face is built. The results show that mining stress, compressive strength and the original rock stress are the key influence factors of coal mass dilatancy in working face. And mining stress is the main control factor in these three factors, so reducing mining stress is the most effective way to control deep coal dilatancy. A new method of dilatancy prediction is founded based on Binary Choice Model, the mining stress being the main control factor. Consequently, the purpose for effective predicting and controlling dilatancy in working face coal is achieved.

Key words: coal mass dilatancy, influencing factors, significance, dilatancy prediction