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)
2013年
5期
26-30
,共5页
钻探船%海洋岩心钻探%绳索锤击取心%单动双管取心%淡水资源调查
鑽探船%海洋巖心鑽探%繩索錘擊取心%單動雙管取心%淡水資源調查
찬탐선%해양암심찬탐%승색추격취심%단동쌍관취심%담수자원조사
drilling ship%offshore core drilling%wire-line hammer collision coring%swivel type double tube coring%fresh-water resources investigation
舟山海域淡水资源调查项目DZS1孔,水深15 m、钻孔深度达202.1 m,在以粘土层和砂层为主的第四系覆盖层全孔取心、在风化基岩层取心2 m.在第四系覆盖层不下套管直接利用饱127 mm钻具进行绳索锤击取心钻探,基岩采用饱127 mm钻具作为套管、饱50 mm钻具单动双管回转取心钻探.介绍了该孔的主要施工工艺与质量控制方法,包括勘探船抛锚定位、潮汛对钻杆的影响、钻探取心过程控制、用取心钻头不取心扫孔技术、更换钻头技术、泥浆工艺等.
舟山海域淡水資源調查項目DZS1孔,水深15 m、鑽孔深度達202.1 m,在以粘土層和砂層為主的第四繫覆蓋層全孔取心、在風化基巖層取心2 m.在第四繫覆蓋層不下套管直接利用飽127 mm鑽具進行繩索錘擊取心鑽探,基巖採用飽127 mm鑽具作為套管、飽50 mm鑽具單動雙管迴轉取心鑽探.介紹瞭該孔的主要施工工藝與質量控製方法,包括勘探船拋錨定位、潮汛對鑽桿的影響、鑽探取心過程控製、用取心鑽頭不取心掃孔技術、更換鑽頭技術、泥漿工藝等.
주산해역담수자원조사항목DZS1공,수심15 m、찬공심도체202.1 m,재이점토층화사층위주적제사계복개층전공취심、재풍화기암층취심2 m.재제사계복개층불하투관직접이용포127 mm찬구진행승색추격취심찬탐,기암채용포127 mm찬구작위투관、포50 mm찬구단동쌍관회전취심찬탐.개소료해공적주요시공공예여질량공제방법,포괄감탐선포묘정위、조신대찬간적영향、찬탐취심과정공제、용취심찬두불취심소공기술、경환찬두기술、니장공예등.
@@@@For DZS1 well of freshwater resources investigation project in Zhoushan sea, the drilling was started at water depth of 15 meters.The full hole coring depth reaches 202.1 meters by drilling in overburden layer mainly with clay and sand layers and 2 meters of weathered bedrock.In the quaternary, 127mm drill pipe was directly used for wire-line hammer collision coring drilling without casing; in bedrock, 50mm drill pipe was used for swivel type double tube coring drilling with 127mm drill pipe as casing.The paper introduces the main construction processes and quality control methods, inclu-ding anchor of drill ship, consideration of tide impact on drilling pipe,control of drilling procedure, hole cleaning, drill bit replacement,mud technology and so on.
