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
7期
33-35
,共3页
绳索取心%裸孔钻进%护壁%堵漏%无固相乳状冲洗液
繩索取心%裸孔鑽進%護壁%堵漏%無固相乳狀遲洗液
승색취심%라공찬진%호벽%도루%무고상유상충세액
wire-line core drilling%open hole drilling%wall protection%circulation loss control%solid free emulsion fluid
许昌武庄铁矿ZK3349孔设计孔深1500 m，覆盖层厚度达400多米，基岩中存在多个破碎带，第四系和第三系地层接触带软硬互层，并含有大量卵石、漂石，钻探施工极易出现缩径、孔壁坍塌、孔斜等问题。针对这些问题，采取了相应的钻探技术措施，顺利终孔。总结了该孔覆盖层裸孔钻进和深孔绳索取心钻进技术。
許昌武莊鐵礦ZK3349孔設計孔深1500 m，覆蓋層厚度達400多米，基巖中存在多箇破碎帶，第四繫和第三繫地層接觸帶軟硬互層，併含有大量卵石、漂石，鑽探施工極易齣現縮徑、孔壁坍塌、孔斜等問題。針對這些問題，採取瞭相應的鑽探技術措施，順利終孔。總結瞭該孔覆蓋層裸孔鑽進和深孔繩索取心鑽進技術。
허창무장철광ZK3349공설계공심1500 m，복개층후도체400다미，기암중존재다개파쇄대，제사계화제삼계지층접촉대연경호층，병함유대량란석、표석，찬탐시공겁역출현축경、공벽담탑、공사등문제。침대저사문제，채취료상응적찬탐기술조시，순리종공。총결료해공복개층라공찬진화심공승색취심찬진기술。
The depth of 1500m was designed for ZK3349 in Wuzhuang iron mine of Xuchang, where the thickness of over-burden layer was up to more than 400m,there were several fracture zones, the contact zone of quaternary and tertiary strata with soft and hard interbedded rocks containing large amounts of gravel and boulder.Diameter shrinkage, wall collapse and hole inclination were often encountered.The corresponding measures were taken to smoothly fulfil the drilling.The open hole drilling in overburden layer and wire-line core drilling technology in deep hole are summarized.
