浅埋深煤层群工作面启封及地表裂缝影响程度评估  

Evaluation on Sealing-Opening of Working Face under Closed Distance Seam Group and Influence Degree of Surface Crack

作　　者：邢永亮 赵乾坤 XING Yong-liang;ZHAO Qian-kun(Wuhai Energy Company of National Energy Group,Wuhai 016062,China;China Coal Technology and Engineering Group Shenyang Research Institute,Fushun 113122,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,China)

机构地区：[1]国家能源集团乌海能源公司,内蒙古乌海016062 [2]中煤科工集团沈阳研究院有限公司,辽宁抚顺113122 [3]煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《煤炭技术》2021年第10期144-148,共5页Coal Technology

摘　　要：封闭工作面的启封是恢复煤矿安全生产的常规措施,对照《煤矿安全规程》第279条规定对黄白茨煤矿021005工作面是否具备启封条件进行判定,并将气样组分比率RT作为指标对启封后火区复燃情况进行评估,由于工作面埋深相对较浅,且启封后回采期间对应地表存在冒烟裂缝,根据开采现状进一步对安全回采是否受到冒烟裂缝威胁进行评估。结果表明:021005工作面已经具备启封条件且启封后引起复燃的可能性较小,地表冒烟裂缝对9#、10#煤层021005工作面安全回采不构成威胁,为类似工作面的启封及火灾危险评估提供借鉴。The unsealing of the closed working face is a routine measure to resume the safe production of the coal mine. According to article 279 of the Coal Mine Safety Regulation, whether the 021005 working face of Huangbaici coal mine has the condition of unsealing is judged, the ratio of the gas component RTis taken as an index to evaluate the situation of the fire area after opening of the coal mine. Because the buried depth of the working face is relatively shallow, and there are smoking cracks on the corresponding surface during mining after unsealing, whether the safety extraction is threatened by smoke fracture is evaluated according to the status of mining. The results show that the 021005 working face has the condition of unsealing and the possibility of fire is small, and the smoke cracks on the surface do not threaten the safety of the 021005 working face in 9#and 10#coal seams, it can be used for reference in opening and fire risk assessment of similar working face.

关 键 词：煤层群 启封 地表裂缝 

分 类 号：TD752[矿业工程—矿井通风与安全]