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通过在正行矿1504综放面采空区预埋多组测温探头和束管系统,实测采空区遗煤在不同埋深和不同测点处的温度以及O2、CO、CO2、CH4、C2H6气体浓度参数,分析得出了采空区温度以及O2、CO浓度的变化规律。根据采空区“三带”划分方法对正行矿1504综放面采空区进行了划分,确定了采空区“三带”的范围。并根据测温数据及取气样分析得到的采空区气体成分,确定工作面的推进速度以及遗煤氧化最高温度,保证了工作面的安全回采。
Through the multi-group temperature probe and beam tube system embedded in the goaf of No. 1504 fully mechanized top-coal caving face in Zhengxing Mine, it was found that the temperature of coal left in the mined area at different burial depths and different measuring points as well as the temperature of O2, CO, CO2, CH4 and C2H6 Concentration parameters, analysis of the goaf temperature and O2, CO concentration changes. According to the method of “mined zone” and “three zones”, the mined-out area of No. 1504 fully mechanized top-coal caving face of Zhengxing Mine is divided and the range of “three zones” of goaf is determined. And based on the temperature measurement data and gas samples obtained from the analysis of the gob gas composition to determine the advancing speed of the work surface as well as the maximum temperature of left coal oxidation to ensure the safe mining face.