摘要
为了掌握赵家寨煤矿二1煤层采空区自然发火规律,论文以赵家寨煤矿二1煤层12205工作面为研究对象,采用现场测试、理论研究和数值模拟研究相结合的研究方法,研究不同进风量情况下采煤工作面采空区的氧气浓度场,划分了采空区自然发火“三带”。研究结果表明:工作面回风侧开切眼以里0~6m为散热带,6~26m为氧化升温带,大于26m为窒息带,氧化升温带宽度为20m;随着工作面供风量的增加,采空区散热带、氧化升温带、窒息带整体向采空区深部移动,且氧化升温带的范围呈现扩大趋势。研究结果对类似郑州矿区二1煤层的矿井自然发火具有重要指导意义。
In order to grasp the law of spontaneous combustion in the goaf of II 1 coal seam in Zhaojiazhai Coal Mine,the 12205 working face of II 1 coal seam in Zhaojiazhai Coal Mine was took as the research object,and three research methods such as on-site testing,theoretical research and numerical simulation research were used.The oxygen concentration field in the goaf of the coal mining face under different air intakes was studied,and the"three zones"of spontaneous combustion in the goaf were divided.The results showed that 0~6m in the opening eye on the return side of the working face was the heat dissipation zone,6~26m was the oxidation heating zone,more than 26m was the suffocation zone,and the width of the oxidation heating zone was 20m;that with the increase of the air supply on the working face,the heat dissipation zone,the oxidation heating zone and the suffocation zone of the goaf as a whole moved to the deep of the goaf,and the range of the oxidation heating zone presented an expanding trend.The results of the study have important guiding significance for the spontaneous combustion of the mine which is similar to the II 1 coal seam in the Zhengzhou mining area.
作者
秦俊宾
范涛
李全贵
李延召
郑强
QIN Junbin;FAN Tao;LI Quangui;LI Yanzhao;ZHENG Qiang(Henan Province Three Soft Coal Seam Mining Engineering Technology Research Center,Zhengzhou Henan 450007,China;Henan Xinzheng Coal and Electricity Co.,Ltd.,Xinzheng Henan 451100,China)
出处
《安全》
2020年第8期43-47,52,共6页
Safety & Security
