综放工作面回采末期封闭火区动态治理技术  

Dynamic Control Technology of Closed Fire Zone at the End of Mining in Fully Mechanized Caving Face

作　　者：喻建 YU Jian(Heshanyiyuan Coal Industry Co.,Ltd.,Shanxi Lu'an Mining (Group)Co.,Ltd.,Jinzhong,Shanxi,032700)

机构地区：[1]山西潞安矿业(集团)公司和顺一缘煤业有限责任公司

出　　处：《煤炭科技》2019年第5期106-110,共5页Coal Science & Technology Magazine

摘　　要：5242综放工作面停采撤架期间CO超限,采取应急灭火措施后,火势不能有效控制,随后封闭5242工作面。综合分析采空区内部浮煤分布、漏风强度,划定高温区域位于5242工作面回风巷架后40m、运输巷架后50m的立体空间。通过在5242工作面回风巷密闭外面施工灭火措施巷,在灭火措施巷和5243工作面回风巷分别向采空区施工钻孔,通过钻孔灌注三相泡沫后,封闭区监测结果显示达到启封要求。工作面启封后采取向采空区注氮气、上下隅角施工挡风墙、支架尾梁后方预埋管路灌注三相泡沫等防复燃措施,工作面顺利完成了撤架工作。During the period of stopping mining and removing frame, CO in 5242 fully-mechanized caving face exceeded the limit. After taking emergency fire extinguishing measures, the fire situation could not be effectively controlled, and then 5242 face was closed. The distribution of floating coal and air leakage intensity in the goaf are comprehensively analyzed. The high temperature area is defined as a three-dimensional space 40 m behind the air return roadway frame and 50 m behind the transportation roadway frame in 5242 working face. Through the construction of fire extinguishing measures outside the closed airways of the 5242 working face, boreholes were drilled into the goaf by means of fire extinguishing measures and 5243 working face return air tunnels. The monitoring results in the enclosed area after drilling and pouring three phase foam showed that the sealing requirements were achieved. After the opening of the working face, nitrogen injection is applied to the goaf, upper and lower corners are used to construct the windbreak wall, the rear supports are embedded in the pipeline, and the three-phase foam is reburied.

关 键 词：综合防灭火技术 封闭工作面 火区治理 工作面启封 

分 类 号：TD752[矿业工程—矿井通风与安全]