摘要
通过深部立井围煤的受力分析,以及地压和瓦斯压力的研究,揭示了立井穿越深部煤层时瓦斯突出的力学机理,对于含瓦斯煤体的结构提出了不同与过去观点的气球爆炸新假说。文章强调了深部围煤塑性区域的形成和发展,以及煤与瓦斯突出的临界状态。整个研究涉及弹塑性理论,材料的强度理论以及岩土力学中的某些相关理论。研究结果不仅可用来预测立井穿越深部煤层时瓦斯的突出,而且可以为立井揭煤过程中煤与瓦斯防突措施的研究奠定理论基础。
In the paper, the mechanical mechanism of gas Emission is revealed by the force analysis of surrounding coal of deep vertical shaft and the research on ground pressure and gas pressure during vertical shaft crossing deep coal bed. A new hypothesis, balloon ex- plosion hypothesis which different from the past viewpoint, is given to explain the structure of coal body containing methane. Formation and development on plastic zone of deep surrounding coal and critical state of coal and gas Emission is emphasized in the paper. Many theories, including elastic -plastic theory for materials, intension theories and some related theories of geothechnieal mechanics, are involved in present paper. Research results is not only used to predict the Emission of gas, but also become the theoretical basis for the research on measures against coal and gas Emission during vertical shaft accrossing the coal bed.
出处
《煤》
2009年第12期1-5,共5页
Coal
基金
安徽理工大学博士基金资助项目(2007BAK24B00)
关键词
立井揭煤
深部煤层
煤与瓦斯突出
力学机理
气球爆炸学说
uncover coal bed in vertical shaft
deep coal bed
gas Emission
mechanical mechanism
balloon explosion hypothesis
