汉江兴隆船闸建设主要技术问题设计研究

汉江兴隆船闸为单线一级船闸，线路总长1 400 m，闸室有效尺寸180 m×23 m×3.5 m。船闸设计水头8.1 m，属短廊道输水系统中的高水头船闸。模型试验表明，船闸运行时，闸室船队系缆力超标且产生立轴吸气漩涡等问题；通过研究设置消涡板、调整下闸首进水口型式等措施可以使问题得到解决。船闸上、下闸首采用整体式结构，底板面积大，为降低温控要求和改善底板结构受力状态，研究提出了“左右分块浇筑、中间预留宽槽、中期适时并缝”的解决方案。但在实施过程中，由于进度滞后错过了宽槽并缝的时机，为不耽误后续施工，又研究提出了闸墩内设空腔和底板堆载解决方案。兴隆船闸主要技术问题的解决方案可供类似工程参考。 

Design research on main technological problems in construction of Xinglong shiplock on Hanjiang River

The Xinglong shiplock on Hanjiang river, a single-lane one-step shiplock with total length of 1 400m, has effective chamber size of 180m×23m×3.5m, and its design water head is 8.1m, which could be classified as a high water head shiplock in the series of short corridor water diversion system. In the model test, it was found that the mooring force of ship team exceeded the standards and the vertical suction eddy existed. Comprehensive measures such as setting eddy-reduction plate, adjusting water intake shape of lower lock head were adopted to solve the above problems. The upper and lower lock heads is an integral structure with large bottom plate. Therefore, a solution of conducting the pouring of left zone and right zone separately, reserving a wide joint in middle part and performing joint conjunction timely in mid period was proposed, so as to reduce the temperature-control demands and improve the stress condition of bottom plate. However, the opportunity for joint conjunction had been missed due to the lag in schedule, so a new substituted solution was proposed, which set cavities in sluice piles and conducted preloading on bottom plates. These solution measures could provide references for other similar projects.