煤田火区下采煤工作面安全开采影响程度分析

Influence Degree Analysis of Safety Mining of Coal Face Under Coalfield Fire Area

针对黄白茨煤矿021205工作面上覆7-1(Ⅲ)煤田火区的治理现状,开展煤田火区下采煤工作面的安全开采影响分析。通过分析021205工作面与上覆7-1(Ⅲ)煤田火区的位置关系以及各煤层之间的相互间距等因素,结合经验公式和"三下"采煤计算公式计算021205工作面回采时垮落带和断裂带的最大高度。结果表明:021205工作面回采不会受到7-1(Ⅲ)煤田火区明火的威胁,也不会受到7-1(Ⅲ)煤田火区有毒有害气体的侵入,但是为确保021205工作面以及其他备采工作面的安全回采,仍需对周边采空区进行监测,对7-1(Ⅲ)煤田火区进行治理。

Aiming at the current status of 7-1(Ⅲ) coal field fire area in Huangbaici Coal Mine 021205 working face, the safety mining impact analysis of coal mining face under the coal field fire area was carried out. By analyzing the positional relationship between 021205 working face and overburden 7-1(Ⅲ) coal field fire zone and the mutual distance between the coal seams, the empirical formula and the"three-under"mining calculation formula are used to calculate the maximum height of the fall zone and the fracture zone of 021205 working face during mining. It was concluded that 021205 working face will not be threatened by open flames in 7-1(Ⅲ) coal field fire zone, and will not be invaded by toxic and harmful gases in 7-1(Ⅲ) coal field fire zone.However, in order to ensure the safe mining of 021205 working face and other mining-ready working faces, it is still necessary to monitor the surrounding goaf and control 7-1(Ⅲ) coalfield fire area.