探矿工程-岩土钻掘工程Issue(2)：1-6,6.
月球钻探取心特种钻头研制与试验
Study on Particular Coring Bit for Lunar Soil Drilling
摘要
Abstract
Forming process and composition of lunar soil were introduced in this paper, and the actual lunar soil physical and mechanical indexes were compared with and simulated CUG-1 lunar soil and normal dry sand, it was suggested that hard clods with certain cementing strength might be encountered in lunar coring drilling.To ensure the successful lunar co-ring drilling, a special polycrystalline diamond compact (PDC) coring bit should be developed.Based on the breaking rock mechanism of PDC bit, the negative rake angle, bypass angle, exposure height, gauge protection of PDC bit and brazing technologies of PDC cutters were designed respectively;and finite element analysis was made on the force of bit and drill stem assembly during drilling process.At last, the dry drilling test was made by special designed PDC bit, it indicated that the bit would be effective when rock drillability was less than or equal toⅥ, and it could stratify the requirements for lunar soil drilling.关键词
特种钻头/钻孔取样/月壤/硬质团块Key words
particular bit/coring drilling/lunar soil/hard clod引用本文复制引用
李大佛,雷艳,许少宁..月球钻探取心特种钻头研制与试验[J].探矿工程-岩土钻掘工程,2013,(2):1-6,6.基金项目
国家十二五重点攻关项目“月球三期工程”的一个分支项目 （）
