裕溪一线船闸扩容改造工程总平面布置分析

General layout analysis of expansion and reconstruction project of Yuxi First Line Shiplock

通过对裕溪一线船闸扩容改造工程建设规模及平面布置制约和影响因素的分析,预测各水平年过闸货运量及船舶通过量,明确工程的建设规模、闸位布置和总体布置方案。建立二维水动力数学模型,在多种工况下模拟裕溪节制闸和船闸上游引航道及口门区通航水流条件,并据此调整闸门上游口门区及连接段局部线路走向,提出疏浚两个反弯段北侧、扩大过水断面、降低流速等保证航行安全的对策措施。经综合分析确定的船闸建设规模、闸位布置和总平面布置较好地协调了多方矛盾,原址重建方案可行。

Based on the analysis of the restricting and influencing factors for the construction scale and plane layout of the Yuxi Shiplock expansion and reconstruction project,the annual freight volume and the ship throughput were forecasted and the construction scale,the lock position and the general layout of the project were determined.A two-dimensional hydrodynamic model was established to simulate the navigation flow conditions of the approach channel and the entrance area in the upstream of the regulating sluice and the Yuxi Shiplock under various operating conditions.According to the calculation results,the local route alignment of the upstream entrance area and the connecting section is adjusted.Countermeasures reducing the flow velocity and ensuring the navigation safety are proposed,including dredging at the north side of the two curved sections,enlarging the cross-section of the water flow,reducing the flow velocity.The construction scale,lock position and general plane layout of the ship lock determined by comprehensive analysis are well coordinated with many contradictions.The research result shows that the in-situ reconstruction scheme is feasible and the design idea can be referred to similar projects.