论文部分内容阅读
阐述了低透气性煤层外加载荷破坏煤岩体中孔隙的增透卸压机理;进一步分析了煤岩体内部结构的变形和传统的增透卸压方法,以及基于这些方法大范围增透卸压的困难,提出了一种新的增透卸压方法,即可控煤与瓦斯喷流技术。此方法就是利用煤与瓦斯突出动力瓦斯膨胀能破碎煤体,抛出煤与瓦斯,增大煤层内的空腔,达到使更大范围内的煤层卸压,同时采出煤与瓦斯的目的。
The paper also expounds the mechanism of the increase permeability and pressure relief of the pores in the coal and rock mass by the addition of low gas permeability coal seam; further analyzes the deformation of the internal structure of the coal and rock mass and the traditional method of pressure increasing and pressure relief, and based on these methods, Pressure of the difficulties, put forward a new by pressure relief method, that is, control of coal and gas jet technology. This method is to use coal and gas outburst dynamic gas expansion can crush the coal, throw coal and gas, increase the cavity within the coal seam to achieve the purpose of the coal seam in a wider range of pressure relief, while mining coal and gas.