长洲枢纽扩能船闸平面布置研究

发布时间：2018-09-06 11:58

【摘要】：通航建筑物是供船舶通过枢纽的水工建筑物，是枢纽各水工建筑物中最易因平面布置不当而出现问题的。通航建筑物的平面布置问题一直是枢纽平面布置设计中的重点，解决枢纽中通航建筑物平面布置问题的最有效手段是水工模型试验。扩能船闸的平面布置问题是船闸平面布置中技术最为复杂的，因为在已建枢纽上扩建，扩能船闸位置的选择空间受到明显限制。本文依托西江干线长洲水利枢纽扩能船闸工程，开展船闸平面布置问题研究，，主要内容涉及船闸位置的比选、口门区及连接段航道通航水流条件的改善措施等。采用定床整体水工模型试验及自航船模试验相结合的研究方法，对拟建的长洲枢纽三线四线船闸布置方案进行了对比分析。研究发现，中江方案三线四线船闸上游口门区位于内江和中江分流口，洪水流量条件下存在较大的横流，船舶航行试验表明船舶进出船闸上游引航道存在很大的安全隐患；三线、四线船闸下游引航道位于河道左侧，与右侧的主航道异岸连接，洪水期泄水闸泄流会对船舶航行造成不利影响。研究结合水流条件试验和船舶航行试验结果，并综合考虑上下游已建桥梁等情况，确定中江方案不可行。外江方案船闸位于已建一线二线船闸右侧台地，其通航水流条件远远优于中江方案，但上游和下游引航道需与已建的一线、二线船闸共用口门区航道和连接段航道，航路复杂。综合总体研究成果，选定外江方案为优选布置方案。本项目在外江方案基础上开展了一系列优化试验研究，分析了不同工程措施条件下的通航水流条件，结合船模行试验深入分析研究优化措施的改善效果，在此基础上提出推荐改善措施，最后通过会船试验分析并研究了船闸同时运营的双向通航条件，研究结果显示推荐工程措施满足船舶对会安全要求。
[Abstract]:Navigable building is the hydraulic structure for ships to pass through the hub. It is the most prone to the problems caused by improper plane arrangement in each hydraulic structure of the hub. The plane layout of navigable buildings has always been the key point in the layout design of the hub. The most effective method to solve the layout problem of navigation buildings in the hub is hydraulic model test. The problem of the plane layout of the expanded lock is the most complicated in the layout of the ship lock, because the space of the location selection of the expanded lock is obviously limited by the expansion of the existing hub. Based on the capacity expansion project of the Changzhou Water Conservancy Project along the Xijiang River, this paper studies the layout of the ship lock plane, including the location comparison of the ship lock, the improvement measures of the navigable flow conditions in the entrance area and the connecting section, and so on. Based on the research method of fixed bed integral hydraulic model test and self-navigation ship model test, the layout scheme of the proposed third line and four-line lock of Changzhou Hub is compared and analyzed. It is found that the upstream gate area of the third and fourth lines shiplock of Zhongjiang project is located at the diversion port of Neijiang and Zhongjiang, and there is a large cross flow under the condition of flood discharge. The ship navigation test shows that there is a great hidden danger in the approach channel of ship entering and leaving the upper reaches of the lock. The downstream approach channel of the third and fourth lines lock is located on the left side of the channel and is connected with the right main waterway. The discharge of the sluice during the flood period will adversely affect the navigation of the ship. According to the results of flow condition test and ship navigation test, and considering the bridge built in upstream and downstream, it is determined that the Zhongjiang scheme is not feasible. The Waijiang Shiplock is located on the right platform of the second line lock, and its navigable flow condition is far better than that of the Zhongjiang scheme. However, the upstream and downstream approach channels need to share the channel of the entrance area and the connecting channel with the established channel, and the navigation route is complex. According to the overall research results, the Waijiang scheme is selected as the optimal layout scheme. This project has carried out a series of optimization test studies on the basis of the Waijiang project, analyzed the navigable flow conditions under different engineering measures, and analyzed the improvement effect of the optimization measures in combination with the ship model test. On the basis of this, the improvement measures are recommended. Finally, the two-way navigation conditions of shiplock are analyzed and studied by ship meeting test. The results show that the recommended engineering measures can meet the requirements of ship safety.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U641.2

【参考文献】