摘要
为了研究复杂地质条件下的薄煤层综采技术,通过FLAC3D数值模拟及现场矿压观测等手段,确定了石圪节煤矿8101薄煤层综采工作面的合理布置方式,掌握了薄煤层综采工作面的矿压显现规律。研究结果表明:三种布置方案均可行,但第一种方案为最优方案,即工作面沿底布置,割掉一部分顶板;工作面支架载荷的分布特点为:工作面两端压力小于中部压力,尤其是上部测站的压力偏低,支架没有很好的发挥性能,应当在生产过程中加强对上部支架的管理;工作面支架平均初撑力为17.27 MPa,是额定初撑力31.5 MPa的54.8%,平均工作阻力为28.45 MPa,为额定工作阻力40.7 MPa的69.9%,所选支架完全能够满足工作面对顶板的支护要求。
In order to study the thin seam full mechanized technology under complex geological conditions, the working face＇s reasonable distribution of 8101 in mine of Shigejie is established through the method of FLAC3D numerical simulation and mineral pressure observation. The manifestations law of ground pressure is hold. The results of the study show that the three distributions are feasible, but the first is the best. The characteristics of the load in hydraulic support show that the pressure in the two tips of working face is lower than the middle, especially the upper station. The hydraulic supports don＇t work well. We should take more care to the upper hydraulic support. The average setting pressure is 17.27 MPa which only take part of 54.8% of nominal setting pressure. The working resistance is 28.45 which only take part of 69.9% of nominal working resistance. The hydraulic support which we select can totally satisfy the support requirement.
出处
《煤》
2010年第4期12-15,共4页
Coal
关键词
薄煤层综采
FLAC3D数值模拟
矿压观测
thin seam full mechanized technology
FLAC^3D numerical simulation
mineral pressure observation
