摘要
阐述了采用冲击反循环钻机对直径为1.8 m的嵌岩桩的施工工艺。从钻机的选用。钻头的形式和处理方法,护筒的埋设到钻进过程中的注意事项,各项措施以及特殊情况的处理都作了详细论述。
The paper expatiates on the construction technology of 1.8m diameter＇ s pile embeded in rock using percussion reverse circulation drill. And the paper detailedly introduces form and processing method of aiguille, precautions and measures and disposal of particular case in the built in and drilling process of retaining cylinder.
出处
《黑龙江交通科技》
2008年第2期71-72,共2页
Communications Science and Technology Heilongjiang
关键词
冲击反循环
钻孔进尺
刃角
开口
percussion reverse circulation
drin footage
angle of throat
uncork
