CAJ | 학술논문

基于清洁生产的理念，以曹村矿11-214综放工作面为例，对坑口电厂烟道气用于煤矿采空区防灭火的可行性进行了数值计算。计算模型中引入了非均质孔隙率、在烟道气的处理中引入了多组分气体输运方程，计算结果显示：烟道气注入前自燃带位于距工作面（40~120）m的范围内，最大宽度为78m；烟道气注入后自燃带位于距工作面（49~62）m，最大宽度为9.5m，自燃带面积明显变小，并在注气口形成了耗氧汇。烟道气的动态运移规律显示，采空区数值计算应在以雷诺数为判定依据的基础上分区选择计算模型。通过采空区内不同位置烟道气运移连续监测，可获得采空区高效防灭火合理注入参数。
기우청길생산적이념，이조촌광11-214종방공작면위례，대갱구전엄연도기용우매광채공구방멸화적가행성진행료수치계산。계산모형중인입료비균질공극솔、재연도기적처리중인입료다조분기체수운방정，계산결과현시：연도기주입전자연대위우거공작면（40~120）m적범위내，최대관도위78m；연도기주입후자연대위우거공작면（49~62）m，최대관도위9.5m，자연대면적명현변소，병재주기구형성료모양회。연도기적동태운이규률현시，채공구수치계산응재이뢰낙수위판정의거적기출상분구선택계산모형。통과채공구내불동위치연도기운이련속감측，가획득채공구고효방멸화합리주입삼수。
Based on the concept of cleaner production,the feasibility of applying the flue gas in mine pithead power to fire prevention and extinguishing in goaf was numerically studied by taking the mechanized caving mining face 11-214 of Caocun coal mine as example. The heterogeneity porosity and multi-component gas transport equations were introduced into the mathematical model. The results showed that the area of "spontaneous combustion zone"in goaf turned small obviously. The range of"spontaneous combustion zone" was away from working face about 40-120m before flue gas injection,and the data was 49-62m after flue gas injection. At the same time,the maximum width of "spontaneous combustion zone" in goaf decreased from 78m to 9. 5m after injecting the flue gas,and the sink terms of oxygen consumption was formed in the port of gas injection. The migration law of flue gas showed that the numerical calculation of goaf should select the different computation model based on the judgment basis of Reyn-olds number. Through the continuous monitoring on the migration of flue gas at different locations in goaf,the rea-sonable parameters of flue gas injection were obtained for high efficient fire prevention.