CAJ | 학술논문

建立了长压短抽式通风条件下掘进面巷道模型,采用非稳态离散相模型研究吸风口安设于掘进机上部条件下,巷道内粉尘实时运移与分布规律。模拟结果表明,掘进机附近巷道内存循环风流区域,使得粉尘由掘进机后侧和旁侧流经掘进断面；掘进巷道前部存在高浓度粉尘聚集区域,最高粉尘浓度达到1400 mg/m3以上,开启除尘风机60 s 后可使前部粉尘平均浓度由1120 mg/m3降低至815 mg/m3,降幅27％；前50 m 巷道内的平均粉尘浓度可由578 mg/m3降至268 mg/m3,降幅达53??6％,该布置方式下总体除尘效果良好。
건립료장압단추식통풍조건하굴진면항도모형,채용비은태리산상모형연구흡풍구안설우굴진궤상부조건하,항도내분진실시운이여분포규률。모의결과표명,굴진궤부근항도내존순배풍류구역,사득분진유굴진궤후측화방측류경굴진단면；굴진항도전부존재고농도분진취집구역,최고분진농도체도1400 mg/m3이상,개계제진풍궤60 s 후가사전부분진평균농도유1120 mg/m3강저지815 mg/m3,강폭27％；전50 m 항도내적평균분진농도가유578 mg/m3강지268 mg/m3,강폭체53??6％,해포치방식하총체제진효과량호。
The model for heading face roadway under far-pressing-near-absorption ventilation was set up,and the unstable discrete phase model was used to study the real-time dust migration and distribution law in the roadway when the exhaust opening was installed on the upper of head-ing machine.The simulated results showed that the recirculated airflow near heading roadway made dust flow to the heading face from the end and side of heading machine.The high concen-trated dust gathered in front of heading roadway.The highest dust concentration in front of head-ing machine was greater than 1400 mg/m3 .After starting dust exhausting fan for 60s,the aver-age dust concentration decreased from 1 120mg/m3 to 815 mg/m3 ,with a drop of 27 %.The aver-age dust concentration in the first 50 m of roadway decreased from 578 mg/m3 to 268 mg/m3 , with a drop of 53.6 %.It follows that the good dust removal effect can be obtained under this ar-rangement.