沙坪煤业上覆小窑隐蔽采空区探测及灾害防治技术研究  

Hidden goaf detection and hazard control technology for overlying small goaf in Shaping Coal Mine

作　　者：黄华 任仲久 秦政 HUANG Hua;REN Zhong-jiu;QIN Zheng(Shanxi Jinshen Energy Co.,Ltd.,Hequ 036500,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,China;CCTEG Shenyang Research Institute,Fushun 113122,China)

机构地区：[1]山西省晋神能源有限公司党委,山西河曲036500 [2]煤矿安全技术国家重点实验室,辽宁抚顺113122 [3]中煤科工集团沈阳研究院有限公司,辽宁抚顺113122

出　　处：《煤炭工程》2021年第11期86-90,共5页Coal Engineering

摘　　要：为有效治理沙坪煤业上覆小窑采空区的火灾隐患,预防火与有害气体下泄危害下组煤工作面安全生产,采用同位素测氡法将隐患范围缩小至猫儿沟排土场内,在氡值异常区通过井上下钻孔探测法进一步圈定发火隐患区域,探测工作面上覆区域内是否存在高温氧化点,以便针对性地采取地表裂隙封堵、地面钻孔灌注液氮及井下注氮隔离等措施,对圈定的重点隐患区域进行治理。结果表明,同位素测氡与钻孔探测相结合的方法能在较短的时间内有效圈定隐患范围,结合数据分析判定有害气体主要来源于矿界范围外的历史遗留火区,但工作面上覆区域内也存在高温氧化点;裂隙封堵及井上下联合注氮的治理措施使上覆采空区内温度及CO等有害气体浓度降至标准以下,发火隐患得以消除,保障了13103综放工作面安全开采条件。In order to control the fire hazard in the goaf of the small mine and prevent the leakage of fire and harmful gases from damaging the coal working face of the lower coal, the isotope radon method is used and the hidden danger area is delineated within the range of Maoergou dump. In the abnormal radon value area, surface and underground drilling detection is used to find the coal fire hazard area, to determine if high-temperature oxidation spots exist above the working face, so as to conduct governance measures such as surface fissure plugging, surface drill-injecting liquid nitrogen, and underground nitrogen injection. The results show that the combination of isotope radon measurement and borehole detection can effectively delineate the range of hidden dangers in a relatively short time, it’s judged that, the harmful gases are from left-over fire zone out of the mine boundary, and there are high-temperature oxidation spots above the working face;the treatment measures of fissure plugging and surface-underground joint nitrogen injection have reduced the temperature of the overlying goaf and brought the concentration of harmful gases such as CO within the standard, eliminating fire hazards and ensuring the safe mining conditions of the 13103 fully mechanized caving face.

关 键 词：隐蔽采空区 煤火探测 火区治理 测氡法 钻探法 

分 类 号：TD753[矿业工程—矿井通风与安全]