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我们机场自六月分在38号孔施工以来,岩心脱落事故接連不断的出现,严重的影响生产任务的按时完成。自六月起至八月末止,累计岩心脱落事故的时间达73小时之多,尤其是在六月下旬和七月上旬之间,这种事故的次数极为频繁。通过几次群众性的技术研究会,大家提出了些办法,如采有了不同形式和不同规格的卡塞物共七、八种:即4.0的大钢粒,各种不同规格的石粒,3/8寸×10公厘的铁棍,用钻头废
Since the construction of the 38th hole in the airport in June, a series of core loss accidents have occurred one after another, seriously affecting the timely completion of production tasks. From June until the end of August, the accumulated core loss accident took more than 73 hours, especially in late June and early July. Through several mass technical seminars, we put forward some measures, such as the adoption of different forms and different specifications of the jam a total of seven or eight kinds: the 4.0 large steel, a variety of different specifications of the stone tablets, 3/8 inch × 10 mm iron bar, with a drill waste