论文部分内容阅读
我公司部分机台转入煤田钻探施工二年来，在153矿区共施工钻孔119个，累计钻探工作量18738.03米。各机台以前一直在金属矿床从事金刚石钻进，缺乏大口径打煤经验。同时，我们施工的153矿区煤层松散破碎，取心困难。因此，前期施工的钻孔煤心采取率平均只达到60％，并且污染烧灼严重，需补取煤心的钻孔较多。今年经过努力取心质量显著提高，煤心采取率平均达到了95％以上，基本上做到了煤心不污染，不烧灼。下面谈谈我们的具体作法和体会，供参考。
Some of our machines have been transferred to the coalfield for drilling construction over the past two years. A total of 119 holes have been drilled in the 153 mines with a total drilling capacity of 18738.03 meters. The machine has been engaged in diamond mining in the metal deposits, the lack of large-caliber coal mining experience. At the same time, the coal seams in our 153 mines are loosely crushed and difficult to coring. Therefore, the pre-construction drilling coal mining average rate of only 60%, and serious pollution burning need to make more coal core drilling. This year, after much effort, the quality of coring has been significantly improved. The average coal utilization rate has reached more than 95%. Basically, the coal heart is not polluted and does not burn. Here to talk about our specific practices and experiences for reference.