摘要
西成高铁清江河特大桥桥梁桩为钻孔灌注桩,穿越卵漂石地层,成孔难度大,钻进困难,严重制约工期。针对该地层,采用全套管跟管钻进工法,搓管机配套旋挖钻机施工,有效地解决了卵漂石地层成桩问题。
The bridge pile is bored grouting one for Qingjianghe super large bridge of Xi’ an-Chengdu high-speed rail;borehole drilling was difficult because of the cobble-boulder stratum crossing which seriously restricted the time limit for the project.In view of this circumstance, drilling with full casing and rotary drilling rig with casing oscillator were adopted to solve the difficulties of pile construction in cobble-boulder stratum.
出处
《探矿工程（岩土钻掘工程）》
2015年第5期50-52,56,共4页
Exploration Engineering:Rock & Soil Drilling and Tunneling
关键词
卵漂石地层
钻孔灌注桩
全套管
搓管机
旋挖钻机
跟管钻进
清江河特大桥
cobble-boulder stratum
bored grouting pile
casing oscillator
rotary drilling rig
drilling with casing
Qingjianghe super large bridge
