江西煤炭科技2023年第1期摘要:为了治理大阳泉煤矿8128综放面高浓度粉尘问题,分析了综放工作面主要产尘地点,实测了人行道中的呼吸带高度处呼吸性粉尘占比,基于此提出了采煤机滚筒、液压支架喷雾降尘和回风巷全断面水幕帘综合降尘措施。结果表明,回风巷水幕帘后全尘和呼尘浓度被降低至34mg/m3和17.5mg/m3,降尘率达到了95.9%和95.8%,采煤机下风向10m处除尘率均超过95%,剩余浓度仅为64.5mg/m3和27.1mg/m3。关键词:综放工作面;粉尘;除尘技术;应用效果中图分类号:TD714+.4文献标识码:B文章编号:1006-2572(2023)01-0168-03DiscussiononDedustingTechnologyat8128Fully-mechanizedCavingFaceofDayangquanCollieryHaoJun(DayangquanCoalCo.,Ltd.,Yangquan,Shanxi045000)Abstract:Tocontrolthehigh-concentrationdustat8128fully-mechanizedcavingfaceofDayangquanColliery,theauthorproposesthecomprehensivededustingmeasuresofsprayingdedustinginshearerdrumandhydraulicsupportandfull-sectionwatercurtaininventilationroadwaybyanalysisofdustarisingspotsandfieldtestingofrespirabledustratiointheheightofrespiratoryzoneinwalkway,whichisprovedtoreducetheconcentrationoffulldustandrespirabledustto34mg/m3and17.5mg/m3respectivelywithdustfallefficiencyof95.9%and95.8%inwater-curtainedventilationroadway,anddustremovalefficiencyof95%in10-meterdownwindofshearer,withremainingconcentrationof64.5mg/m3and27.1mg/m3.Keywords:fully-mechanizedcavingface;dust;dedustingtechnology;applicationeffect大阳泉煤矿8128综放工作面除尘技术探讨郝军(大阳泉煤炭有限责任公司,山西阳泉045000)18128综放面概况阳泉南煤集团大阳泉煤矿设计产量为0.45Mt/a。8128综放面属于15#煤层,分布在矿井的南部,其北边是该煤层的轨道巷,西面是8130采空区,东面为8126采空区,上方距40m位置为第12#煤层。15#煤层的厚度是5.6m,倾角为0°~7°,煤尘没有爆炸性,自燃倾向性为第III类,属不易自燃煤层。煤种为无烟煤,工业分析结果如表1所示。工作面走向可采长度845m、倾向133m,总面积约为112697m2,供风量为1000m3/min。工作面采用MG300/720-AWD1型电牵引采煤机割煤,割煤总高度为2.7m,每次割煤深度为0.6m,采放比为1:1.09,割煤一刀以后将支架前移放顶煤。表1煤种工业分析结果水分/%灰分/%挥发分/%固定碳/%2.1112.717.7777.4128128...