我队312机所钻地层松散破碎易掉块,往往钻进百余米不能达到硬盘,因而钻进中易造成埋钻事故,且不易处理,影响任务的完成。为此,我们采用了高架机台、超径扩孔钻头以及跟管钻进等方法,取得了良好的效果,使台月效率猛升,较前两个月提高1.5～3倍,而突破了千米。 Our team 312 drilling loose loose easily broken block, often can not reach 100 meters into the hard drive, drilling and easy to cause burial accidents, and difficult to deal with, the completion of the task. To this end, we have adopted the elevated machine, oversize reaming drill bit and drilling with the tube and other methods, and achieved good results, so that the efficiency of Taiwan and the moon surged 1.5 to 3 times over the previous two months, and broke through km.