CAJ | 학술논문

针对当前同忻煤矿井下粉尘浓度偏大、工作条件恶劣以至严重影响该矿安全生产的问题,根据非饱和土渗流理论,提出采用 comsol 有限元数值模拟软件进行煤层注水方案优化,最后进行现场应用及效果测定。通过数值模拟得出同忻矿8103工作面的煤层湿润半径约为15 m,在保持4°倾角条件下,其湿润范围最大。采用了新的注水方案后,工作面的粉尘浓度明显降低,其中采煤机中部和前滚筒下风侧10 m 处的降尘率分别达到了19.55％、30.62％。
침대당전동흔매광정하분진농도편대、공작조건악렬이지엄중영향해광안전생산적문제,근거비포화토삼류이론,제출채용 comsol 유한원수치모의연건진행매층주수방안우화,최후진행현장응용급효과측정。통과수치모의득출동흔광8103공작면적매층습윤반경약위15 m,재보지4°경각조건하,기습윤범위최대。채용료신적주수방안후,공작면적분진농도명현강저,기중채매궤중부화전곤통하풍측10 m 처적강진솔분별체도료19.55％、30.62％。
For larger concentration of dust in the current Tongxin Coal Mine and the poor working conditions,which seriously affects mine production safety issues,based on unsaturated flow theory,this article uses comsol finite element simulation software to optimize seam water injection program,and make the final determination of field application and effect. The results shows:the moist radius of 8103 working face in Tongxin Coal Mine is about 15 m,and in keeping + 4°inclination conditions,the moist range max. After the introduction of a new water injection program,the dust concentration was signifi-cantly lower. The rate at which the dust before the shearer drum central and leeward side of the 10 m position reaches 19.55%、30.62% respectively.