综掘工作面硫化氢分布规律及泡沫治理技术
Hydrogen sulfide distribution law and foam control technology of fully-mechanized gateway driving face
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摘要: 为治理煤矿综掘工作面的硫化氢危害,对东山矿71507综掘工作面硫化氢的分布规律进行现场测试分析,提出了采用泡沫吸收液对硫化氢进行治理的新技术方案;研究了泡沫治理硫化氢机理、泡沫发生装置及其布置方式。结果表明:在综掘工作面掘进机割煤时,使用质量分数0.4%的泡沫剂和流量40 L/min、质量分数0.8%吸收液治理硫化氢涌出,可使掘进机割煤涌出硫化氢体积分数由73.1×10-6降至10.6×10-6,硫化氢吸收效率达到85.5%,煤矿硫化氢危害治理效果显著。Abstract: In order to control the hydrogen sulfide danger from the mine fully-mechanized gateway driving face, based on the site measurement analysis on the hyd rogen sulfide distribution law of No.71507 fully-mechanized gateway driving face in Dongshan Mine, a new technical plan with the foam absorption liquid was provided t 0 control the hydrogen sulfide.The paper studied the hydrogen sulfide control mechanism with the foam, the foam generator device and layout method.The result showe d that, the foam mass fraction 0.4%,absorption liquid flow 40 L/min and absorption liquid mass fraction 0.8% were obtained to control the hydrogen sulfide emission fro m the coal cutting by the seam driving machine in the mine fully-mechanized gateway driving face.The average value of the hydrogen sulfide from the coal cutting was r educed from 73.1x10-6to 10.6x10-6, the hydrogen sulfide absorption efficiency reached to 85 .5% and the good control effect of the hydrogen sulfide danger was obtain ed.