京九铁路黄河特大桥滩地沉井施工

京九铁路黄河铁大桥桥墩为圆形薄壁沉井基础，沉井下沉施工中，先后采用人工取土下沉、机械抓泥下沉、空气吸泥下沉、空气幕下沉、高压射水下沉、排水下沉等方法；沉井封底采用导管法施工，按分层、对称的原则浇筑水下混凝土。通过采用综合措施，保证了沉井施工顺利完成。

CONSTRUCTION OF PIERS ON FLOOD LAND OF YELLOW RIVER BY SINK WELL FOR SUPER LARGE BRIDGE OF JINGJIU RAILWAY

Piers foundation of super large bridge across Yellow River of Jingjiu Railway are circular sunk well ones. In the construction verities of technology were adopted such as sinking by man-excavating; machine-excavating;mud vacuum suction;air curtain method;high pressure water injection; water draining method etc. Pier bottom is completed by pouring concrete through pipes and following the principle of symmetry and layer by layer.All there comprehensive technique measure secured a smooth completion of the sunk well works.