Multi-head boring anchor can be fixed to meet multi-holes processing requirement. 可安装多头钻座,满足多组群孔的同时加工;
In the course of constructing reversed pendent hole, the strict measures were used in boring hole, surveying degree of inclined line, correcting its error, and installing protective steel tube, anchor, the line of perpendicular, and buoy. 倒垂孔施工过程中,对钻孔及纠偏,孔斜检测,保护管安装及埋设,锚块、垂线安装及埋设,浮体组安装等,均采取了严格的技术措施;