葛洲坝船闸人字闸门底止水装置改造  

Reconstruction of bottom water seal device of miter gate for Gezhouba ship lock

作　　者：曾维 ZENG Wei(Three Gorges Navigation Authority,Yichang 443002,China)

机构地区：[1]长江三峡通航管理局,湖北宜昌443002

出　　处：《水运工程》2023年第12期118-123,共6页Port & Waterway Engineering

摘　　要：葛洲坝船闸多次因人字闸门底止水装置损坏造成船闸停航抢修,停航时间长,给长江航运带来巨大损失。分析底止水损坏原因,提出将止水装置活动段改成固定段,并增加人字闸门全关时底止水与门槛的间隙,将底枢段止水固定螺栓由沉孔螺栓改为通孔螺栓,并提高所有止水固定螺栓强度,安装2个螺母防松,改善底止水装置使用工况,提高其可靠性。通过计算给出人字闸门全关时底止水与门槛的间隙值,保证人字闸门合拢时底止水刚好与门槛接触。结果表明,葛洲坝3座船闸下游人字闸门底止水经过改造,运行效果良好。The Gezhouba ship lock has been suspended for repairs due to multiple damages to the bottom water seal device of the miter gate,resulting in a long suspension time and causing huge losses to the Yangtze River shipping.The reason for the damage to the bottom water seal is analyzed.It is proposed to change the active segment of the sealing device into a fixed segment.The gap between the bottom water seal and the threshold is increased when the miter gate is fully closed.The sealing bolts of the bottom pivot segment are changed from counterbore bolts to through-hole bolts.The strength of all sealing fixing bolts is increased.Two anti-loosening nuts are installed to improve the sealing device's working conditions and reliability.The gap value between the bottom water seal and the threshold is obtain by calculating when the miter gate is fully closed.It is ensured that the bottom water seal is just in contact with the threshold when the miter gate is closed.The results show that the water seal devices of miter gates for the three Gezhouba ship locks are reconstructed,which have good operation effect.

关 键 词：人字闸门 底止水 活动段 固定段 间隙 

分 类 号：U643[交通运输工程—船舶及航道工程]