薄煤层工作面底板突水机理及防治技术  

Floor Water-inrush Mechanism and Prevention Technique at Working Face of Thin Coal Seam

作　　者：张哲[1] 赵磊磊[1] 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454003

出　　处：《煤矿安全》2013年第5期148-150,共3页Safety in Coal Mines

摘　　要：采用理论分析和工程计算的方法对鹤壁煤业集团王河矿10902薄煤层工作面底板突水机理进行了分析,并对工作面富水异常区进行了钻孔验证和注浆加固设计研究。结果表明,该地质条件下的隔水层安全厚度为10.5 m,大于直接底砂质泥岩厚度9.15 m,给工作面造成突水威胁,并对富水异常区进行钻探和注浆加固,使得工作面突水量由注浆前的130 t/h减至20 t/h。The mechanism of floor water-inrush at 10902 working face of Hebi Coal Industry Group thin coal seam is researched with the method of theory analysis and engineering calculation. The water - rich abnormal area at working face is studied with borehole veri- fication and grouting reinforcement. The results show that the safety thickness of aquifuge is 10.5 m under the geological conditions, which is greater than the direct bottom sandy mudstone thickness of 9.15 m, and leads to the threat of water inrush at working face. Through the drilling and grouting reinforcement at waterrich abnormal area, water-inrush at working face reduced from 130 t/h before grouting to 20 t/h.

关 键 词：底板突水 隔水层 钻孔验证 注浆加固 

分 类 号：TD745[矿业工程—矿井通风与安全]