煤炭工程 ›› 2020, Vol. 52 ›› Issue (6): 116-120.doi: 10.11799/ce202006025

• 研究探讨 • 上一篇    下一篇

综采工作面覆岩裂隙动态演化特征研究

尹嘉帝,张华磊,涂敏   

  1. 安徽理工大学
  • 收稿日期:2019-10-29 修回日期:2020-01-03 出版日期:2020-06-15 发布日期:2020-07-23
  • 通讯作者: 尹嘉帝 E-mail:1506858187@qq.com

Study on dynamic evolution characteristics of overburden fractures in fully mechanized coal face

  • Received:2019-10-29 Revised:2020-01-03 Online:2020-06-15 Published:2020-07-23

摘要: 鉴于采动影响下采场覆岩裂隙空间分布特征对矿井突水灾害防控和瓦斯抽采具有重要意义,以潘二矿18111工作面为具体工程背景,采用相似物理模拟、数值模拟以及理论分析,对综采工作面覆岩裂隙的分布演化规律以及导水裂隙发育高度进行研究。研究表明:随工作面的不断推进,工作面两端存在裂隙聚集带,裂隙发育高度高且多以大角度为主|通过数值模拟对裂隙发育角度进行统计分析,结合相似模拟试验结果,得出覆岩裂隙发育角度呈现区域性分布的特点|采用多种方法来研究裂隙发育高度,通过对所得结果进行综合分析,得出导水裂隙的发育高度为54~60.8m。研究结果对类似工程条件下裂隙演化特征的研究具有一定的借鉴意义。

关键词: 综采工作面, 裂隙空间分布, 裂隙高度, 动态演化特征, 采动影响

Abstract: In view of mining under the influence of the space distribution features of overburden rock fracture of mine water inrush disaster prevention and control and gas extraction is of great significance, in the concrete engineering background of pan coal mine 18111 working face, the similar physical simulation, numerical simulation and theory analysis of the three methods, studied the distribution of strata cranny of fully mechanized working face evolution regularity and conductivity fracture height.The results show that, with the continuous advance of the working face, there are fracture accumulation zones at both ends of the working face.Based on the statistical analysis of fracture development Angle by numerical simulation and the results of similar simulation tests, it is concluded that the fracture development Angle of overlying rock presents the characteristics of regional distribution.A variety of methods were used to study the height of fracture development. Through a comprehensive analysis of the obtained results, it was concluded that the height of water-conducting fracture development was 54~60.8m.The results can be used for reference in the study of fracture evolution characteristics under similar engineering conditions.

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