煤炭工程 ›› 2013, Vol. 45 ›› Issue (11): 72-74.doi: 10.11799/ce201311025

• 研究探讨 • 上一篇    下一篇

采空区下孤岛工作面矿压显现规律研究

李志华1,华心祝2,杨科2,杨积海3,刘乐枝4   

  1. 1. 安徽理工大学能源学院
    2. 安徽理工大学能源与安全学院
    3. 淮浙煤电公司 顾北煤矿
    4. 顾北煤矿
  • 收稿日期:2012-10-03 修回日期:2012-12-14 出版日期:2013-11-10 发布日期:2013-11-11
  • 通讯作者: 李志华 E-mail:lizhihua128@126.com

Study on strata behavior law in island coal face under goaf

  • Received:2012-10-03 Revised:2012-12-14 Online:2013-11-10 Published:2013-11-11

摘要:

以顾北煤矿1232(1)采空区下孤岛工作面地质条件为背景,采用FLAC3D数值模拟软件对比分析了采空区下孤岛工作面矿压显现规律与一般孤岛工作面的差异。研究表明:受上覆煤层采动影响,会引起下方孤岛面煤体卸压,所以采空区下孤岛面相对于实体煤下孤岛面矿压显现不显著。通过现场实测验证,数值模拟所得的矿压显现规律与实测结果相吻合,说明利用数值模拟的方法确定采空区下孤岛面矿压显现是可行的。

关键词: 采空区, 孤岛工作面, 矿压显现, 数值模拟, 实测分析

Abstract:

According to the geological conditions of the 1232(1) island coal face under goaf in Gubei Coal Mine, the FLAC-3D software was used to study the variation of strata behavior between island coal face under goaf and island coal face in usual. The result indicate that: the vertical stress can decrease of island coal face after coal mining by overlying coal seam, therefore, compared with the island coal face under solid coal, the strata behavior are not significant in island coal face under goaf. The verification of the mine site measurements showed that the strata behavior law measured with the numerical simulation is well fitted with the actual measured results, the numerical simulation method is feasible to determine the strata behavior in island coal face under goaf.

Key words: goaf, island coal face, strata behavior, numerical simulation, analysis of site measurement