【本刊讯】2012年4月7日,在北京燕山工业区五环线高架桥市政工程的工地上,三一旋挖钻机再次创造新的施工历史。三一旋挖钻机于当日的打桩施工作业中,挖出迄今为止最长的岩芯,整块岩芯全长2米,直径1.2米,技术人员张开双臂已然不及左右,再次打破业界纪录。据了解,创造这一纪录的是三一SR280R第二代新型旋挖钻机。据北京桩机试验检测所所长陈东坡介绍,这片施工工地,全 On April 7, 2012, SANY Rotary Drilling Rig once again created a new construction history on the site of the municipal viaduct project of the Fifth Ring Road in Beijing’s Yanshan Industrial Zone. During the piling construction operation on that day, SANY Rotary Drilling Machine dug up the longest core so far. The entire core length is 2 meters and the diameter is 1.2 meters. It is already too late for technicians to open their arms and once again break the industry record. It is understood that to create this record is the second generation of Trinity SR280R rotary drilling rig. According to Beijing Dongting Pilot Test Inspection introduced, this piece of construction site, all