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
4期
71-74
,共4页
帷幕灌浆孔%防斜钻具%扶正器%孔底偏移量%大岗山水电站
帷幕灌漿孔%防斜鑽具%扶正器%孔底偏移量%大崗山水電站
유막관장공%방사찬구%부정기%공저편이량%대강산수전참
curtain grouting hole%anti-deflection BHA%stabilizer%hole bottom offset%Dagangshan hydropower station
大岗山水电站帷幕灌浆工区施工局限性显著、地层自然造斜力强,灌浆孔孔斜设计要求高,其顶角要求≤0.5°/100 m,防斜技术难度大.采用多扶正器防斜钻具组合,有效地限制了灌浆孔轴线顶角变化和孔底偏移量,控制了灌浆孔弯曲偏斜,灌浆孔成孔质量明显提高,获得了较好的经济效益.
大崗山水電站帷幕灌漿工區施工跼限性顯著、地層自然造斜力彊,灌漿孔孔斜設計要求高,其頂角要求≤0.5°/100 m,防斜技術難度大.採用多扶正器防斜鑽具組閤,有效地限製瞭灌漿孔軸線頂角變化和孔底偏移量,控製瞭灌漿孔彎麯偏斜,灌漿孔成孔質量明顯提高,穫得瞭較好的經濟效益.
대강산수전참유막관장공구시공국한성현저、지층자연조사력강,관장공공사설계요구고,기정각요구≤0.5°/100 m,방사기술난도대.채용다부정기방사찬구조합,유효지한제료관장공축선정각변화화공저편이량,공제료관장공만곡편사,관장공성공질량명현제고,획득료교호적경제효익.
@@@@The dykes of curtain grouting work area in Dagangshan hydropower station are steep and the environmental limi-tation and natural deflecting force of formation are significant.So the design of hole-deflection is strict and the vertex angle requirement is up to≤0.5 °/100 m.By using multi-stabilizer anti-deflection BHA, the grouting hole axis vertex angle changing and hole bottom offset were effectively limited and the grouting hole bending deflection was controlled with the quality of grouting holes significantly improved.
