论文部分内容阅读
水平长孔瓦斯抽放是一种新的抽放工艺,在我国刚刚起步。煤炭部“七五科研规划”已将高效长钻孔钻机的研制和使用,水平长孔瓦斯抽放列为重点攻关项目。为介绍国外有关水平长孔瓦斯抽放、参数分析、钻机特征、钻具导向、测孔等方法,本刊将陆续发表美国矿业局及科研单位所发表论文,实验报告的译文,供参考。
Horizontal long hole gas drainage is a new drainage technology, has just started in our country. The “Seventh Five-Year Scientific Research Plan” of the Ministry of Coal has listed the development and application of a highly effective and long drilling rig as a key research item in gas drainage with horizontal long holes. In order to introduce foreign methods such as horizontal gas drainage with long holes, parametric analysis, drilling rig characteristics, drilling tool orientation and hole measurement, we will publish translations of papers and experiment reports published by the United States Department of Mines and research institutes for your reference.