大孔径钻孔大流量瓦斯抽采技术研究与应用

Research and application of large-diameter borehole and large flow gas extraction technology

新田煤矿1901工作面为被保护层工作面,虽然通过保护层开采卸压后,但煤层瓦斯含量还是偏高,所以瓦斯治理工作任务仍然繁重,瓦斯抽采时间较长。该工作面在巷道掘进期间,经过探索研究,采取在巷道掘进面及钻场内布置大孔径钻孔,进行大流量瓦斯抽采的新技术,有效地提高了瓦斯抽采效果,确保了煤巷快速掘进。

The 1901 working face of Xintian Coal Mine was the protected working face.Although the pressure was released by mining through the protective layer,the gas content in the coal seam was still high,so the task of gas control was still heavy,and the time of gas extraction was long.During the excavation of the working face,through the exploration and research,the new technology of arranging large bore holes in excavation face and the drilling field for large flow gas extraction was adopted,which effectively improved the gas extraction effect and ensured the rapid excavation of coal roadway.