干坞坞门及堤围恢复设计

Design of Dry Boatyard Entrance and Embankment Reconstruction

佛山市汾江路南延线工程车道下穿宽约250 m的东平水道,由于工期长并受到场地、航道等条件的制约,工程采用固定干坞预制管段。管段预制完成后破堤形成坞门,浮运至相应沉管段基槽处沉放。为保证干坞坞门处破堤安全及恢复堤围质量,应满足渗流及抗滑稳定等直接涉及工程安全的要求。

The southern extension carriageway of Fengjiang Road in Foshan City underpass 250 m long Dongping waterway .Restricted by the long construction period, operation site and navigation channel, ducts precast in dry boatyard are applied.After the completion of the precast ducts, the embankment is excavated open to form the boatyard entrance.The ducts are floated to the duct channel at correspond-ing immersing sections to drive down.To assure the embankment excavation safety and reconstruction quality, requirements on the project safety directly related to the project itself such as seepage and safety against sliding shall be satisfied.