摘要
采用现场矿压观测和RFPA数值模拟方法对耿村煤矿易自燃特厚煤层综放工作面矿压显现规律进行了分析研究。结果表明,耿村煤矿12170综放工作面存在比较剧烈的矿压显现,老顶存在较明显的周期来压现象,老顶周期来压平均步距为16.06 m;整个工作面全长范围内,老顶来压具有明显的不一致性,即中下部和下部来压强度大,上部和中上部来压强度小;综放支架在回采过程中支护阻力充足,其可靠性较好,能够适应2-3特厚煤层综放开采的要求;RFPA数值模拟结果与现场矿压观测结果一致,表明了RFPA数值模拟方法应用于矿压显现规律分析的有效性。
The paper used methods of field strata control observation and RFPA numerical simulation to analyze and study ground behavior regularity of fully mechanized face with extra thick coal seam of easy spontaneous combustion in Gengcun Coal Mine.The results showed that there is acute ground behavior in 12170 fully mechanized face of Gengcun Coal Mine and obvious phenomenon of periodic loading in main roof whose average interval was 16.06 m;in whole range of fully mechanized face,phenomenon of periodic loading in main roof has obvious variance,namely loading strength is large in middle-lower and lower areas while small in upper and middle-upper areas;hydraulic supports have enough supporting resistance and high reliability in stoping process,which can satisfy requirements of fully mechanized caving of 2-3 extra thick coal seam;the result of RFPA numerical simulation is consistent with the one of field strata control observation,which showed validity of the method of RFPA numerical simulation about analyzing strata behavior regularity.
出处
《工矿自动化》
2011年第4期70-73,共4页
Journal Of Mine Automation
基金
河南理工大学青年基金项目(Q2009-10)
关键词
综放工作面:矿压显现
特厚煤层
矿压观测
数值模拟
RFPA
fully mechanized face
ground behavior
extra thick coal seam
strate control observation
numerical simulation
RFPA
