论文部分内容阅读
作者通过考查认为联邦德国抽放瓦斯年递增量为1000万米~3以上的经验是:发展不同类型钻机;提高钻机功率;增大钻杆直径;使用寿命长的牙轮钻头;采取综合抽放措施;使用聚氨酯封孔;选用水环式真空泵抽放瓦斯;安装自动检测、监控仪表与安全装置。
The author thinks that the annual increase of gas drainage in the Federal Republic of Germany of 10 million m 3 or more is that: the development of different types of drilling rigs; the improvement of drilling rig power; the increase of the diameter of drill rods; the long service life of roller cone drill bits; Measures; the use of polyurethane sealing; selection of water ring vacuum pump drainage gas; install automatic detection, monitoring instruments and safety devices.