急倾斜特厚煤层硫化氢气体抽放效果分析

Analysis of drainage effect of hydrogen sulfide gas in steeply inclined and extra thick coal seam

为了解决神华新疆能源有限公司部分矿井受硫化氢气体影响导致生产设备受损、矿井维护难度增大,同时严重威胁矿井的生产安全问题,现针对新疆乌东煤矿开展研究。通过借鉴现有煤矿瓦斯抽放工艺技术,在乌东煤矿5754501试验工作面开展煤体硫化氢抽放工艺技术研究。研究掌握了乌东煤矿煤层硫化氢抽放半径、负压、流量、抽放浓度等工艺参数变化对煤体硫化氢浓度的影响效果以及抽放后硫化氢的治理效果。试验结果表明:当钻孔抽放负压增加时,硫化氢的抽放影响半径会呈现不同程度的增加;硫化氢的抽放浓度会随抽放时间的增加呈现逐渐减小的变化规律。研究结果对乌东煤矿的安全生产和生产接续具有重要的指导作用。

In order to solve the damage of production equipment,the increase of mine maintenance difficulty and the serious threat to production safety caused by hydrogen sulfide gas in some mines of Shenhua Xinjiang Energy Co.,Ltd.,the research was carried out for Wudong Coal Mine in Xinjiang.By using the existing coal mine gas drainage technology for reference,the research on coal body hydrogen sulfide drainage technology was carried out in 5754501 experimental working face of Wudong Coal Mine.The effect of process parameters such as hydrogen sulfide drainage radius,negative pressure,flow rate and drainage concentration on the concentration of hydrogen sulfide in coal and the treatment effect after hydrogen sulfide drainage in Wudong Coal Mine were studied and grasped.The test results showed that when the negative pressure of drilling drainage increased,the influence radius of hydrogen sulfide drainage also increased in varying degrees,and concentration of hydrogen sulfide gradually decreased with the increase of drainage time.The research results had an important guiding effect for the safety production and production succession of Wudong Coal Mine.