中新网安徽新闻1月30日电 (通讯员赵懿 摄影完颜亮)1月30日1时，在铜陵今年第一场雪的伴随下，中铁大桥局G3铜陵长江公铁大桥项目的建设者历经10个小时的连续作业，顺利灌注首根钻孔桩。It marks that the project has officially entered the main construction。

　 "This time, the No. 19 pile of the No. 3 main pier is injected。The No. 3 main pier has 68 drilled piles, each with a diameter of 3.The pile length is 95 meters and the hole depth is 122 meters.5 meters, depth of about 71.4 meters, drilling construction using XXCMG XR580HD, XR600E and XR700 rotary drilling RIGS to drill holes step by step。China Railway Bridge Bureau G3 Tongling Yangtze River Railway Bridge project branch chief engineer Song Haitao introduced that G3 Tongling Yangtze River Railway Bridge is the world's first double-deck cable-suspension cooperation system bridge, pier 3 and pier 4 are the two main piers of the bridge, carrying 988 meters of the main span across the river。

　 Construction is very difficult due to the large hole depth, deep rock penetration and high perpendicularity requirements of ultra-deep bored pile。The project department organized experts to study for many times, formulated quality control points and measures for geological terrain, carried out detailed safety and technical disclosure, and adopted strict environmental protection measures。During the perfusion process, members of the project leadership team took charge of the site, and technical personnel stared at the whole process to ensure the smooth perfusion of the first pile。

　 Snow promises a good year。The hole formation and successful perfusion of the first pile foundation laid a good foundation for the subsequent pile foundation construction, and also played a demonstration role for the subsequent construction。G3 Tongling Yangtze River Highway and Railway Bridge is an important project for Tongling to accelerate its integration into Hefei metropolitan area and Yangtze River Delta based on the Yangtze River Economic Belt。After the completion, it is of great significance for building a copper development belt, comprehensively promoting the construction of international cultural tourism demonstration zone in southern Anhui, accelerating the coordinated development of regional economy, strengthening the interconnectivity of the Yangtze River Delta, and building a modern comprehensive transportation system。