某扩容改造船闸工程闸位平面布置

General layout of lock position of a ship lock expansion and renovation engineering

狭窄空间内船闸扩容改造受诸多因素的影响,其闸位平面布置方案的合理性尤为重要。以某扩容改造船闸工程为例,综合考虑选址、共用引航道宽度、施工过程对二线船闸主体结构及隔流堤安全的影响、施工围堰布置及防洪要求,进行方案比选研究。最终确定闸位布置方案为:两船闸中心线间距为80 m,改扩建一线船闸下闸首上游面与二线船闸下闸首上游面顺水流方向距离为4.4 m。同时,对后期工程设计提出建议。

The ship lock＇s expansion and renovation in a narrow space is influenced by many factors,and the rationality of the general layout of lock position is particularly important. Taking an expansion and renovation engineering of ship lock for example,considering comprehensively the site selection,the width of shared approach channel,the effect on the second-line ship lock＇s main structure and partition dikes in the process of construction,the layout of construction cofferdam, as well as the requirement of flood control, we carry out a research on the comparison and selection of the scheme.The lock layout scheme determined at last is that the distance between two locks＇axial lines is 80 m and the distance along river flow direction between the lower lock head of expansion and renovation the first-line ship lock and the lower lock head of the second-line ship lock is 4. 4 m. Moreover,suggestions are presented for the follow-up engineering design.