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前言绳索取心金刚石钻进技术在世界地质勘探工作中从发明和采用到现在已经历三十年左右,目前广泛用于各项地质矿产钻探、工程地质钻探以及矿山坑道钻探等领域。国外从五十年代末期以来,绳索取心金刚石钻进技术和经济效果不断的得到发展和加强;以及这一技术应用领域不断扩大;绳索取心金刚石钻进的孔径已由开始的AQ(48)、BQ(60)、NQ(75.8)、HQ(96)进一步扩大
Foreword Cordoning diamond drilling technology in the world geological exploration from the invention and adoption has now gone through about 30 years, is now widely used in various geological and mineral drilling, engineering geological drilling and mine tunnel drilling and other fields. Abroad Since the late 1950s, rope coring diamond drilling technology and economic effects have been continuously developed and strengthened; and the field of application of this technology has been expanding. The diameter of coring diamond coring has been changed from the initial AQ (48) , BQ (60), NQ (75.8), HQ (96) further expanded