瓦斯膨胀能分布规律及突出预测指标临界值研究
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摘要
霍州煤电集团李雅庄煤矿2号煤层经鉴定具有突出危险性。结合该矿所在区域的地质构造、地层岩性及水文地质条件,介绍了李雅庄煤矿2号煤层产状特征及瓦斯等级,通过固态密封法及液态密封法测定了2号煤层瓦斯压力,分析了煤层瓦斯膨胀能分布规律,并应用连续流量法预测了构造煤指标临界值,为煤矿的快速掘进及安全生产提供了基础数据,为该煤矿预防煤与瓦斯突出提供了依据。
The No.2 coal seam of Liyazhuang Coal Mine of Huozhou Coal Electricity Group has been identified to be of outburst danger. Combining with the geological structure, stratigraphic lithology and hydrogeological conditions of the area where the mine is located, this paper introduced the occurrence characteristics and gas grade of the No.2 coal seam in Liyazhuang Coal Mine, measured the gas pressure of No.2 coal seam by solid sealing method and liquid sealing method, analyzed the distribution law of gas expansion energy in coal seams, and predicted the critical value of structural coal index by continuous flow method. It provided basic data for rapid excavation and safe production of coal mine, and provided basis for preventing coal and gas outburst in the coal mine.
The No.2 coal seam of Liyazhuang Coal Mine of Huozhou Coal Electricity Group has been identified to be of outburst danger. Combining with the geological structure, stratigraphic lithology and hydrogeological conditions of the area where the mine is located, this paper introduced the occurrence characteristics and gas grade of the No.2 coal seam in Liyazhuang Coal Mine, measured the gas pressure of No.2 coal seam by solid sealing method and liquid sealing method, analyzed the distribution law of gas expansion energy in coal seams, and predicted the critical value of structural coal index by continuous flow method. It provided basic data for rapid excavation and safe production of coal mine, and provided basis for preventing coal and gas outburst in the coal mine.
引文
[1]贺化平,周凯.李雅庄煤矿连续流量法预测突出指标的临界值研究[J].煤炭技术,2015,34(7):144-146.
[2]史吉胜.高河煤矿突出危险性区域划分技术研究[D].徐州:中国矿业大学,2014.
[2]史吉胜.高河煤矿突出危险性区域划分技术研究[D].徐州:中国矿业大学,2014.