摘要
通过数值模拟、现场实测等方法对鲁西煤矿极近距离下分层开采导水裂隙带发育高度进行了研究。研究结果表明:通过FLAC3D数值模拟计算得出3上107工作面煤厚2.3 m,裂隙发育高度33.6 m,3下107工作面煤厚3.42 m,裂隙发育高度39.4 m;现场实测结果表明下分层开采后导水裂缝带发育高度为41.51 m,下分层开采后裂缝带发育高度增加较少;3上107工作面导水裂缝带发育类比高度值降低了4.33 m,随着工作面停采时间的增大,采动裂隙尤其是上部的微小裂隙会部分闭合,导致导水裂缝带发育高度有所降低。
Abstract：The water- flowing fractured zone development height in under slicing mining of contiguous seams is studied in Luxi Coal Mine by the means of numerical simulation and field measurement. The results show that by the analysis of FLAC3D numerical simula- tion, the thickness of upper slicing is 2.3 m, the height of water - flowing fractured zone is 33.6 m and thickness of lower slicing is 3. 42 re,the fracture height is 39.4 m. Field measurement shows that water -flowing fractured zone development height is 41.51 m after lower slicing mining, the increasing amount of water -flowing fractured zone is less, and water -flowing fractured zone of upper slicing is 4.33 m, which is less than before. Mining fissure closes partially especially the upper micro - fractures, so water - flowing fractured zone development height is lower than before.
出处
《煤矿安全》
CAS
北大核心
2013年第1期22-24,共3页
Safety in Coal Mines
关键词
极近距离开采
导水裂隙带
数值模拟
采动裂隙
contiguous seams mining
water - flowing fractured zone
numerical simulation
mining fissure
