小窑隐蔽火源精准探测及帷幕注浆高效治理研究
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中图分类号：TD752 文献标志码：A 文章编号：1671−251X（2025）07−0044−08
Abstract：The locations of fire sources in small coal mines are concealedand difficult to accurately identify. Asingledetection method for concealed firesources fromcoal spontaneous combustion makes it difficult to accuratelydetermine theirlocations，andtheconcealed fire sources cannotbe effectively extinguished.Toaddress these issues，the southern mining areaofthe Xiaoyao Coal Mine in Inner Mongoliawasselectedas thecase study and proposed a combined detection method using self-potential and radon measurement method to detect concealed fire sources.The area with abnormalself-potential was delineatedusing the self-potential method，and the area with high radon concentration levels was delineated using the radon measurement method.The spatial distribution characteristicsof the detection results from the two methodswere comprehensively analyzed to determinethe spatial locationand distributionrangeoftheconcealed fire sources.Basedontheself-potentialand radon concentration detection results，the high-temperature combustion area， temperature-rise development area， strong interference area， and normal area were comprehensively interpreted and delineated.The overlapping area of self-potential anomaly and radon concentration anomaly was defined as the high-temperature combustion area. The non-overlapping area of the self-potential anomaly was defined as the temperature-rise development area or strong interference area. The non-overlapping area of the radon concentration anomaly was defined as the strong interference area or normal area.Forthe detected fire source areas，curtain grouting technology was used to treat the concealed fire zones. Curtain holes were arranged along the fire zone boundary，and a mixture of cement and water glass was injected to form a continuous sealed isolation belt to block air leakage.Boreholes were drilled in thecenterofthe fire Zone，and flyash and slurry were injected for fire extinguishing.Theresults showed that after grouting treatment， the temperature and CO concentration in the goaf decreased significantly，achieving efficient control of the concealed fire sources.
Key words： spontaneous combustion of coal; small coal mines fire； fire source location; self-potential method; radon measurement method; curtain grouting
0引言
在煤矿生产过程中，煤自燃严重威胁着矿井安全生产，而西部地区因煤层埋深浅、开采强度大、综放采空区遗煤多等因素，易造成热量积聚导致煤自燃。（剩余12596字）
