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煤与CO2突出有别于煤与CH4突出,近年来因其在国内外发生较少而研究不多,但在窑街煤田它时刻威胁着矿井安全生产,根据以往窑街三矿发生的突出事故以及理论和实验分析了煤对CO2吸附量大于对CH4、N2的吸附量,煤与CO2突出的能量要大于煤与CH4突出,总结了窑街煤田CO2气体的无机来源,进行了突出危险性区域划分,得出了不同区域的煤与CO2突出危险性。在突出危险区急倾斜特厚煤层条件下,提出了采用水平分层开采与预抽煤层瓦斯方法,根据残余瓦斯含量检验预抽效果,实现了矿井的安全高效生产。
Unlike coal and CH4, coal and CO2 are distinguished from coal and CH4. In recent years, they have not been studied much due to their relatively few occurrences both at home and abroad. However, it threatens the mine safety production in Yaojie Coalfield. And the theoretical and experimental analysis of coal adsorption of CO2 greater than the adsorption of CH4, N2, coal and CO2 outburst energy is greater than the prominent coal and CH4, summed up the Yaogu coalfield CO2 gas inorganic sources, carried out in the prominent hazardous areas Division, come to the different regions of coal and CO2 highlight the danger. Under the conditions of the steeply inclined and extremely thick coal seam in the dangerous area, the method of horizontal stratified mining and pre-pumping coal seam gas is put forward, the pre-pumping effect is checked according to the residual gas content, and the safe and efficient production of the mine is realized.