英国煤炭局所属煤矿中,五十年代初期向采煤区邻近层打钻孔抽放瓦斯,与现在相比其规模是很小的。流进巷道中的瓦斯一般被压入式通风系统排除。本文将介绍几种符合近代采矿技术发展的钻机。 当煤产量增加,采煤工作面推进较快时,须将高浓度的瓦斯排除。这就导致现代瓦斯抽放系统的发展,即向瓦斯区域打钻孔,给钻孔接上管道系统,将瓦斯引至地表排除。约20到30年前,英国制造的钻机没有一台令 In the coal mines owned by the British Coal Board, holes were drilled to the adjacent layers of the coal mining area in the early 1950s and the scale is very small compared to now. The gas flowing into the roadway is generally excluded by the press-in ventilation system. This article will introduce several types of rigs that fit the development of modern mining technology. When coal production increases, coal mining work to promote faster, the high concentration of gas to be excluded. This has led to the development of modern gas drainage systems where holes are drilled into the gas area, pipelines are connected to the boreholes, and the gas is routed to the surface to be excluded. About 20 to 30 years ago, there were not any rigs made in the United Kingdom