矿井中抽放煤层瓦斯,长期以来,是矿山管理的一个关键问题。但是,就无效生产,停机检修打眼设备和钻头的一次投资而论,打眼工序的费用通常也是昂贵的。目前,矿山管理部门正寻找一种新的打眼工序,以便比可折卸的碳素钢钻头打眼速度可提高两倍,并且能将抽放的大量瓦斯作为现场的一种能源利用。 Coal seam gas drainage in mines has long been a key issue for mine management. However, in the case of an investment in ineffective production, downtime maintenance of drilling equipment and drill bits, the cost of the drilling process is often also prohibitive. Currently, mine authorities are looking for a new eye-catching process that will triple the speed of eye-opening compared to a removable carbon-steel drill bit and use the large amount of gas that is being drained as an on-site energy use.