综掘工作面硫化氢抽取−净化一体化治理技术

王富忠; 刘奎; 龚小兵; 赵凯; 张尧; 李定富

doi:10.13199/j.cnki.cst.2021-0820

综掘工作面硫化氢抽取−净化一体化治理技术

Study on integrated treatment technology of hydrogen sulfide extraction and purification in fully-mechanized mining face

摘要

摘要: 硫化氢煤巷综掘工作面掘进时，受巷道独头通风作用，在掘进工作面迎头区域内极易造成硫化氢气体积聚、超限。为治理煤矿综掘工作面硫化氢气体积聚、超限所带来的作业人员伤亡及设备损害，采用CD4型硫化氢便携仪检测硫化氢气体体积分数的研究方法，对硫化氢气体涌出分布规律、掘进机停止割煤后硫化氢气体体积分数随时间变化规律进行了测试分析；揭示出综掘机割煤扰动是诱导综掘工作面硫化氢气体涌出的主因，且涌出后在回风流沿程方向上以及顶底板高度方向上均呈现出逐渐减小的分布规律。采用理论分析、实验室及现场实测试验手段，提出了煤矿综掘工作面硫化氢抽取−净化一体化治理的新技术方案，研究了硫化氢抽取−净化一体化治理机理，研制出用于煤矿综掘工作面硫化氢抽取−净化一体化治理的工艺技术及配套装置。现场应用研究表明，综掘工作面硫化氢抽取−净化一体化治理装置的抽吸风口后1 m及出风口后1 m位置，硫化氢气体涌出体积分数分别由抽取−净化前的169.2×10⁻⁶ 、155.9×10⁻⁶降至抽取−净化后的13.9×10⁻⁶、10.2×10⁻⁶，综掘工作面硫化氢抽取效率达到91.8%，硫化氢净化效率达到93.5%，硫化氢危害治理效果良好，为煤矿综掘工作面硫化氢灾害的治理提供一种新的技术途径。

Abstract: During the driving of the fully mechanized driving face of the hydrogen sulfide coal roadway, due to the ventilation effect of the roadway, it is very easy to cause hydrogen sulfide gas accumulation and overrun in the front area of the driving face. In order to control the casualties and equipment damage caused by the accumulation and overrun of hydrogen sulfide gas in the fully mechanized mining face of coal mine, the research method of measuring the volume fraction of hydrogen sulfide gas with CD4 portable hydrogen sulfide instrument is used to test and analyze the distribution law of hydrogen sulfide gas emission and the change law of the volume fraction of hydrogen sulfide gas with time after the road-header stops cutting coal; It is revealed that the disturbance of coal cutting by the fully mechanized mining machine is the main cause of inducing the emission of hydrogen sulfide gas in the fully mechanized mining face, and the distribution law of the emission gradually decreases in the direction of the return air flow and the height of the roof and floor. By means of theoretical analysis, laboratory and field test, a new technical scheme for the integrated treatment of hydrogen sulfide extraction and purification in coal mine comprehensive mining face is proposed, the mechanism of the integrated treatment of hydrogen sulfide extraction and purification is studied, and the process technology and supporting device for the integrated treatment of hydrogen sulfide extraction and purification in coal mine comprehensive mining face are developed. The field application study shows that the volume fraction of hydrogen sulfide gas gushing at the position 1m after the suction tuyair and 1m after the outlet of the integrated treatment device of hydrogen sulfide extraction-purification on the excavation face decreases from 169.2×10⁻⁶ and 155.9×10⁻⁶ before extraction-purification to 13.9×10⁻⁶and 10.2×10⁻⁶ after extraction-purification, respectively. The hydrogen sulfide extraction efficiency reached 91.8% and the hydrogen sulfide purification efficiency reached 93.5%, and the hydrogen sulfide hazard treatment effect is good, providing a new technical way for the treatment of the hydrogen sulfide hazard in the fully mechanized mining face.

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