湘江株洲至城陵矶航道目前为2,000t级航道,在提升为3,000t级航道研究中存在跨河桥梁通航净空严重不足问题,严重制约了该段航道等级提升进程.提出结合货运量、货种、船型、水文条件等因素针对性分析该段航道通航净空尺度,在既满足通航安全又兼顾经济等前提下解决航道等级提升过程中通航净空不足的问题.

根据结构安全重要性,低水头船闸安全监测可分为成坝结构和非坝结构两个关键布置层次.针对现有规范的不足,提出了适合低水头船闸工程建设的安全监测设置方案,并在大源渡二线船闸等多个项目中进行了成功实践,具有一定的指导价值,可为同类型工程的建设提供借鉴和参考.

船舶大型化对船闸节点通过能力的增长既有利也有弊,针对船舶大型化对船闸通过能力的动态定量影响进行研究.通过建立基于现实规则的船闸数值排档模型,结合构建的大型化船舶发展趋势序列,计算得出船舶大型化后的过闸载质量、 过闸船数和闸室面积利用率等船闸通过能力关键指标的变化.结果表明,船舶的大型化对过闸能力的提高并非全部为有利影响,呈现总体增长,局部跌坎下降的趋势.结合标准化的大型化能有效提高通过能力.

探索湖南省综合交通融合、优化运输结构中以水运为核心的多式联运体系,调研湖南省水运多式联运的主要形式、节点设施、联运通道、业务及运营组织等方面的现状和困境,系统提出湖南省水运多式联运的发展方向和建设思路.

Safety monitoring is an important guarantee for the safe operation of shiplock,the safety monitoring design is an im-portant part of shiplock design.This paper summarizes the engineering characteristics of shiplock and the design principle safe-ty monitoring with reference to the finished shiplocks;especially study the safety monitoring design of ship lock,the technical specification of shiplock are comprehensively analyzed,and the recommended monitoring items have been proposed;combined with the develop trend of safety monitoring technique,the monitoring project and quantity have been proposed.The research results can give reference for the safety monitoring of shiplock.

We simulated the circulation of Taihu Lake based on an ocean model in unstructured grid and finite-volume with three-dimensional primitive equation. The model could fit well the irregular coastal boundary and numerous small islands with the unstructured triangular grid. By analyzing wind, river runoff, baroclinic pressure, the Coriolis Force, and topography, the formation and characteristics of the lake circulation during summer were modeled systematically. Results show that the horizontal circulation was mainly wind-driven; the vertical velocity was about 10 6m/s, much smaller than the horizontal one. Weak vertical circulation could be found in some places. Throughput flow could not lead to horizontal circulation. Affected by the shallow depth, the density current was unstable, and so the horizontal circulation was seldom formed. The topographical effect caused downwind circulation in shallow water while upwind in deep water. In addition, the circulation could be formed if wind force was strong enough even in the condition of flat bottom topography.