CAJ | 학술논문

为了研究和解决西铭矿在生产中由于瓦斯抽采方法的不同可能引起采空区自燃以及瓦斯爆炸等重大安全隐患问题，构建了高位巷、埋管和高低位钻孔瓦斯抽采方法下的非均质多孔介质三维模型。利用非线性渗流定律、通用控制方程和自定义的函数进行解算，结果表明：高位巷、高低位钻孔抽采流量与抽采氧气浓度近似呈正比函数关系，埋管抽采流量与氧化带宽度呈指数函数关系；高位巷、高低位钻孔随着抽采流量的增加抽采效率反而降低，抽采总量增加，埋管抽采位置在距工作面35m处、抽采流量为20m3／min能很好解决上隅角瓦斯超限问题。根据模拟结论：采用立体联合瓦斯抽采方法既能满足抽采要求又能有效控制采空区自燃现象。
위료연구화해결서명광재생산중유우와사추채방법적불동가능인기채공구자연이급와사폭작등중대안전은환문제，구건료고위항、매관화고저위찬공와사추채방법하적비균질다공개질삼유모형。이용비선성삼류정률、통용공제방정화자정의적함수진행해산，결과표명：고위항、고저위찬공추채류량여추채양기농도근사정정비함수관계，매관추채류량여양화대관도정지수함수관계；고위항、고저위찬공수착추채류량적증가추채효솔반이강저，추채총량증가，매관추채위치재거공작면35m처、추채류량위20m3／min능흔호해결상우각와사초한문제。근거모의결론：채용입체연합와사추채방법기능만족추채요구우능유효공제채공구자연현상。
In order to study and prevent the potential safety problems of spontaneous combustion and gas explosion in gob area caused by different gas drainage methods in Ximing coal mine , a three-dimensional numerical model of heterogeneous porous media was established for simulating gas drainage with different methods including high level entry method , buried pipe method , and high and low level borehole method .The nonlinear percolation law , gener-al control equations and the self-defined functions were used for resolving the model .The results showed that:the gas drainage flow rate is directly proportional to the concentration of extracted oxygen when the high level entry and high and low borehole methods are used , while an exponential function relationship between gas drainage flow rate and width of oxidation zone appears when the buried pipe method is used .With the high level entry and high low borehole methods , the incremental drainage efficiency reduces when the drainage flow rate increases , but the total drainage amount increases .Gas exceeding limits in the upper corner can be prevented fairly well when the drainage position is 35 m away from the working face , at the flow rate of 20 m3/min with buried pipe method .The three-di-mensional combined gas drainage method can not only meet the requirements of drainage , but also control the spon-taneous combustion in the gob area effectively .