巷道水膜除尘技术除尘效果模拟

陕西煤业化工技术研究院有限责任公司 现代煤炭开采技术研究所,陕西 西安 710065

巷道; 煤尘; 水膜除尘; 数值模拟; 孔径; 风阻

Effect simulation of water film dust removal in tunnel
HUANG Xin

(Modern Coal Mining Institute of Technology,Shaanxi Coal Chemical Industry Technology Research Institute Co.,Ltd.,Xi'an 710065 China)

roadway; coal dust; water film dust removal; numerical simulation; pore size; wind resistance

DOI: 10.13800/j.cnki.xakjdxxb.2016.0109

备注

为了有效控制巷道内煤尘的运移扩散,降低矿井煤尘危害,设计了巷道水膜除尘装置,通过水膜的吸附和阻挡作用达到净化风流的目的 。同时根据铜川徐家沟煤矿530运输机巷内水膜实际布置情况,建立了数学模型,对该装置的除尘效果进行了模拟研究,结果表明:网帘孔径是影响除尘效果的关键因素,孔径越小,除尘效果越好,但对巷道内风阻的影响越大。因此,需根据巷道实际情况确定合理的孔径尺寸,针对实验巷道的实际情况,确定了最佳孔径为1.6 mm,水膜除尘装置对应除尘率高达94.9%,能够有效降低巷道内煤尘浓度,且水膜前后风速变化仅为0.042 m/s,对巷道内风阻变化影响较小。

In order to effectively control the diffusion of roadway dust and reduce the hazards of mine coal dust,the author has designed a water film dust removal device.Utilize the adsorbed and blocking effect of the water film to purify the wind flow.According to actual situationof Xujiagou-Tongchuan coal mine roadway 530,establishing a mathematical model.Study on the dust collector effect of the device by a simulation.The simulation results show that:The pore size of the net curtain is a key factoraffecting the dedusting effect.The smaller the aperture,the better dust removal.But,the drag of roadway is greater.So,determine areasonable aperture size by the actual situation.According to experimental roadway,the best aperture is 1.6 mm.And the dust removal rate is 94.9%.The concentration of coal dust in the roadway is reduce effectively.And the change of wind speed is only 0.042 m/s.The drag of the roadway has less impact.