中国安全生产科学技术
中國安全生產科學技術
중국안전생산과학기술
JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY
2014年
6期
116-121
,共6页
采空区三维耦合场%自燃三带%最小推进速度%FLUENT
採空區三維耦閤場%自燃三帶%最小推進速度%FLUENT
채공구삼유우합장%자연삼대%최소추진속도%FLUENT
three-dimensional coupled field in goaf%spontaneous combustion three zones%minimum forward speed%FLUENT
采用FLUENT数值模拟方法对采空区三维耦合场进行了分析研究,简述了FLUENT流体数值模拟软件的理论基础,并对FLUENT进行了自行编程,运用开发模型对祁南矿1015工作面及采空区的三维耦合场进行了模拟分析,得到了采空区压力场、漏风流场分布规律。运用现场实测氧气浓度和模拟结果相对比,得出此次模拟能够较好满足现场工程要求。对采空区进行了自燃三带划分,指出采空区自燃最危险的区域在支架后上部,结合10煤最短发火期算出最小推进速度0.8m/d,对工作面的安全回采和采空区火灾的防治具有指导意义。
採用FLUENT數值模擬方法對採空區三維耦閤場進行瞭分析研究,簡述瞭FLUENT流體數值模擬軟件的理論基礎,併對FLUENT進行瞭自行編程,運用開髮模型對祁南礦1015工作麵及採空區的三維耦閤場進行瞭模擬分析,得到瞭採空區壓力場、漏風流場分佈規律。運用現場實測氧氣濃度和模擬結果相對比,得齣此次模擬能夠較好滿足現場工程要求。對採空區進行瞭自燃三帶劃分,指齣採空區自燃最危險的區域在支架後上部,結閤10煤最短髮火期算齣最小推進速度0.8m/d,對工作麵的安全迴採和採空區火災的防治具有指導意義。
채용FLUENT수치모의방법대채공구삼유우합장진행료분석연구,간술료FLUENT류체수치모의연건적이론기출,병대FLUENT진행료자행편정,운용개발모형대기남광1015공작면급채공구적삼유우합장진행료모의분석,득도료채공구압력장、루풍류장분포규률。운용현장실측양기농도화모의결과상대비,득출차차모의능구교호만족현장공정요구。대채공구진행료자연삼대화분,지출채공구자연최위험적구역재지가후상부,결합10매최단발화기산출최소추진속도0.8m/d,대공작면적안전회채화채공구화재적방치구유지도의의。
The theoretical basis of FLUENT software was briefly discussed , and a secondary development was con-ducted to FLUENT .The three dimensional coupled-field was simulated by applying the developed model at 1015 working face and goaf in Qinan coal mine .The distribution law of goaf leakage flow field and pressure field were ob-tained.Compared with the field measurements results of oxygen concentration , it showed that the simulation results can meet the field engineering requirements well .In particular , the spontaneous combustion three zones of goaf were divided , and it was pointed out that the most dangerous area of goaf spontaneous combustion was in the upper rear of the bracket .Combining with the shortest combustion period of 10 coal, the minimum forward speed was cal-culated as 0.8m /d.It has guiding significance for safe mining of working face and fire prevention of goaf .