摘要
瓦斯压力是反映瓦斯在煤层中赋存状态的重要指标,准确获取瓦斯压力对于防止煤与瓦斯突出、瓦斯涌出量预测、瓦斯抽放设计、矿井瓦斯涌出的治理等都具有十分重要的意义。某矿煤层透气性低,使用被动测压法可靠性差、准确度低,且其所需时间明显长于主动测压所需时间;主动测压若封孔不到位也难测出压力。文章以某矿8号煤层为研究对象,利用主动测定法,采取注浆封下行孔的方式对8号煤层瓦斯压力进行测定,取得了良好的效果。
Gas pressure is a significant indicator reflecting the existing state of gas in coal deposit.To obtain gas pressure precisely matters much to prevent coal and gas outburst,predict gas effusion amount,design gas drainage,and treat drainage of gas from the coal mine.Coal deposit in some coal mine is of low gas permeability.Under that condition passive measuring pressure method is of poor reliability and low accuracy,and it requires much longer time than that of active measuring pressure method.Active measuring pressure method can hardly measure the pressure if hole sealing is not fully completed.Aiming at No.8 coal deposit of some coal mine industry,the measurement apply active measuring pressure method to measure No.8 coal deposit in the way of slip casting to seal the downward hole,which reaches fine effect.
作者
武旭峰
WU Xu-feng(Fenghuangshan Coal Mine of Jincheng Coal Group,Jincheng 048007,China)
出处
《煤》
2018年第12期7-9,共3页
Coal
基金
国家自然科学基金青年科学基金资助项目(50904033)
关键词
瓦斯压力
主动测压法
钻孔布置
注浆封孔
注氮气
gas pressure
active measuring pressure method
drilling arrangement
slip casting and hole sealing
nitrogen injection
