探矿工程-岩土钻掘工程
探礦工程-巖土鑽掘工程
탐광공정-암토찬굴공정
EXPLORATION ENGINEERING (DRILLING & TUNNELING)
2014年
6期
31-34
,共4页
风化残积地层%铝土矿%钻探工艺%几内亚
風化殘積地層%鋁土礦%鑽探工藝%幾內亞
풍화잔적지층%려토광%찬탐공예%궤내아
weathering residual formation%bauxite mine%drilling technology%Guinea
几内亚博凯地区铝土矿勘探项目中分别采用无冲洗介质岩心钻探和螺旋钻探2种工艺，通过工程实践和对比试验结果表明：在风化残积地层中无冲洗介质岩心钻探存在着效率低、成本高、岩心质量难以保障、工人劳动强度高等问题。采用螺旋钻探工艺施工，其钻探质量不仅能够满足规范设计要求，而且可以降低成本、提高钻探效率，其钻探效率是岩心钻探的6畅77倍，综合施工效率是岩心钻探的3畅5倍。
幾內亞博凱地區鋁土礦勘探項目中分彆採用無遲洗介質巖心鑽探和螺鏇鑽探2種工藝，通過工程實踐和對比試驗結果錶明：在風化殘積地層中無遲洗介質巖心鑽探存在著效率低、成本高、巖心質量難以保障、工人勞動彊度高等問題。採用螺鏇鑽探工藝施工，其鑽探質量不僅能夠滿足規範設計要求，而且可以降低成本、提高鑽探效率，其鑽探效率是巖心鑽探的6暢77倍，綜閤施工效率是巖心鑽探的3暢5倍。
궤내아박개지구려토광감탐항목중분별채용무충세개질암심찬탐화라선찬탐2충공예，통과공정실천화대비시험결과표명：재풍화잔적지층중무충세개질암심찬탐존재착효솔저、성본고、암심질량난이보장、공인노동강도고등문제。채용라선찬탐공예시공，기찬탐질량불부능구만족규범설계요구，이차가이강저성본、제고찬탐효솔，기찬탐효솔시암심찬탐적6창77배，종합시공효솔시암심찬탐적3창5배。
No circulation media core drilling and auger drilling were used for the bauxite prospecting in Bokai of Guinea. The engineering practice and the comparison test show that no circulation media core drilling has disadvantages of low effi-ciency, high cost, unstable core quality and high labor intensity in weathering residual formations;but with auger drilling technology, the drilling quality of design requirement by specification can be satisfied with lower cost and higher drilling ef-ficiency, the drilling efficiency is 6.77 times that of core drilling and the comprehensive construction efficiency is 3.5 times that of the core drilling.
