综放面瓦斯涌出影响因素及防治技术

Brief Analysis on Influencing Factors of Gas Emission on Fully-mechanized Top Coal Caving Face and Its Control Techniques

介绍了综采放顶煤工作面瓦斯涌出特点和来源,分析了影响综采放顶煤工作面瓦斯涌出的开采层瓦斯含量、工作面的开采强度、邻近层瓦斯涌出和地面大气压力的变化等因素,对上隅角瓦斯治理、改变通风方式、顶板瓦斯排放巷、顶板瓦斯抽采钻孔、均压技术等瓦斯防治技术措施在综放面中的应用进行了探讨。

Introduced features and the source of gas emission on fully-mechanized top coal caving face. In this paper,some factors were discussed, such as gas content of exploitation bed, mining intensity of working face, the gas emission of adjacent seams and atmospheric pressure. It also proposed some gas control measures, such as upper corner gas control, ventilation mode transformation, the layout of roof gas drainage roadway,boreholes construction for roof gas drainage,and the application of even pressure technology on fully-mechanized top coal caving face.