脉冲式注水防治综掘工作面粉尘技术及应用

发布时间：2018-04-10 18:54

本文选题：煤尘 + 综掘工作面　；参考：《煤炭技术》2015年01期

【摘要】：煤层注水是从源头减少煤巷综掘工作面煤尘的治本性措施,然而一些低透气性、高硬度煤层严重影响煤层注水效果,基于解决低透气性煤层注水除尘困难的问题,提出了脉冲式煤层注水方法。以煤巷综掘工作面为研究对象,对煤层脉冲式注水除尘技术进行现场试验,通过现场试验发现在压力8 MPa、频率20 Hz时注水效果最好。对注水后煤层进行采样分析,发现其水分增量与湿润范围明显增大,对比不注水的情况下浮尘达到稳定状态的距离提前了12 m左右,工作面粉尘量降低了70%左右,煤体含水率也显著增加。
[Abstract]:Coal seam water injection is a natural measure to reduce coal dust in fully mechanized mining face of coal roadway from the source. However, some low permeability and high hardness coal seams seriously affect the effect of coal seam water injection, which is based on solving the problem of removing dust by water injection in low permeability coal seam.The method of pulse coal seam water injection is put forward.This paper takes fully mechanized driving face of coal roadway as the research object, carries on the field test to the coal seam pulse water injection dust removal technology, through the field test, finds that the water injection effect is the best when the pressure is 8 MPA and the frequency is 20 Hz.By sampling and analyzing the coal seam after water injection, it is found that the moisture increment and the wetting range are obviously increased, the distance of floating dust reaching stable state is 12 m earlier than that without water injection, and the dust quantity of working face is reduced by about 70%.The moisture content of coal also increased significantly.
【作者单位】：安徽理工大学能源与安全学院;
【分类号】：TD714.4

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