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1980年8月,我队在某铁矿开始绳索取心钻进试点,钻了一个558米的试验孔。台月效率、钻头进尺、时间利用率等各项经济技术指标均超过了同矿区普通金刚石钻进的水平。81年推广使用,年末在另一矿区又施工了一个钻孔,共开动绳索取心钻机两台。从试用到推广,总共完孔11个,进尺3903.30米,开动7.3个台月,平均台月效率535米,较普通金刚石钻进提高了25%;平均钻头进尺75.65米,较普通金刚石钻进提高了79%。其他各项经济技术指标也均有不同程度的提高,初步显示了绳索取心钻进的优越性。
In August 1980, my team began drilling a pilot drill at a certain iron ore mine and drilled a 558-meter test hole. Taiwan efficiency, bit footage, time utilization and other economic and technical indicators are more than the same area with ordinary diamond drilling. 81 years to promote the use of another mine in the construction of a hole at the end of the year, a total of two sets of rope coring rigs. From trial to promotion, a total of 11 holes finished, footage 3903.30 meters, starting 7.3 months Taiwan, the average station efficiency of 535 meters, compared with ordinary diamond drilling increased by 25%; average drill bit footage 75.65 meters, higher than normal diamond drilling 79%. Other economic and technical indicators have also improved in varying degrees, initially showing the superiority of the rope coring.