综掘面双风幕通风系统控尘除尘性能研究  

Dust control and dust removal performance of double air curtainventilation system in fully-mechanized excavation face

作　　者：徐文君 任晓芬 崔宝库 雒晨辉 冯丽伟 XU Wenjun;REN Xiaofen;CUI Baoku;LUO Chenhui;FENG Liwei(School of Energy and Environmental Engineering,Hebei University of Engineering,Handan 056038,China;School of Mechanical Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Guozhuang Coal Industry Corporation,Luan Group,Changzhi 046102,China;Sima Coal Industry Corporation,Luan Group,Changzhi 047105,China)

机构地区：[1]河北工程大学能源与环境工程学院,河北邯郸056038 [2]石家庄铁道大学机械工程学院,河北石家庄050043 [3]山西潞安集团郭庄煤业有限公司,山西长治046102 [4]山西潞安集团司马煤业有限公司,山西长治047105

出　　处：《煤炭工程》2023年第3期133-138,共6页Coal Engineering

基　　金：河北省自然科学基金资助项目(E2019402354);山西省潞安集团项目(2022B9803099)。

摘　　要：针对综掘面粉尘浓度超标的问题,以山西长治潞安司马矿综掘工作面作为研究对象,建立了平行出风口形成的双风幕通风系统仿真模型,空气相利用标准k-ε湍流模型,颗粒相利用DPM模型,对综掘面附近的风流场和粉尘场进行了模拟研究。研究表明:双风幕通风系统在出风口导流板的康达效应下,在司机前方产生两道独立的风幕,靠近产尘点的第一道风幕将作业过程产生的大多数粉尘阻隔在主控尘区内;第二道风幕位于第一道风幕和司机之间形成辅控尘区,进一步拦截粉尘;当上下导流板角度α取45°,风口高度H均取30 mm,抽风口离综掘面距离L为10 m时,呼吸带粉尘浓度最小。将双风幕通风系统与传统长压短抽通风系统控尘除尘性能进行比较可知,前者作用时呼吸带粉尘浓度远低于后者作用时,除尘率提高了84%。Aiming at the excessive dust concentration in fully-mechanized excavation face,taking the excavation face of Sima Coal Mine as the research object,a simulation model of double air curtain ventilation system formed by parallel outlets was established.The standard k-εturbulence model was used in the air phase,and the DPM model was used for the particle phase to simulate the air flow field and dust field near the excavation face.The research shows that,the double air curtain ventilation system generates two independent air curtains in front of the driver under the Conda effect of the air outlet guide plate,and the first air curtain near the dust production point blocks most of the dust generated during the operation in the main control dust area.The second air curtain is between the first air curtain and the driver to form an auxiliary control dust area to further intercept dust;when the angleαof the upper and lower deflectors is 45°,the height H of the air outlet is 30 mm,and the distance L of the air outlet from the fully mechanized excavation face is 10 m,the dust concentration in the breathing zone is the smallest.Through comparing the dust control and dust removal performance of the double air curtain ventilation system with the traditional long pressure short pumping ventilation system,it is found that the dust concentration in the breathing zone is much lower than that of the latter,and the dust removal rate is increased by 84%.

关 键 词：掘进工作面 双风幕 除尘率 数值模拟 

分 类 号：TD714.4[矿业工程—矿井通风与安全]