耙吸挖泥船浅窄航道施工技术

Construction technology of TSHD in shallow and narrow waterway

针对耙吸挖泥船自身体积大、吃水深、不适宜浅窄水域施工的问题,进行了耙吸船浅窄航道施工技术研究。通过分析潮汐、水深条件、耙吸船特性、施工工艺等要素,得出结论:确保选定的船舶上线位置不仅要满足上线时刻的船舶航行挖泥水深需要,还要保证在施工航速下各个时段的船舶富余水深要求。该施工技术以船底富余水深为关键控制量,尽量延伸上线位置,保证可施工区段长度,逐渐拓展工作面,突破了耙吸船浅窄航道水域施工的技术瓶颈。

Aiming at the problem that TSHD has large volume and deep draft,and it is often unsuitable for construction in shallow and narrow waters,the construction technology of the harrow suction dredger in the shallow suction and narrow waterway is studied.Through the analysis of factors such as tide,water depth conditions,harrow suction vessel characteristics,construction technology and other factors,it is concluded that the selected ship’s online position not only needs to meet the depth requirements of the ship’s dredging at the time of on-line,but also the ship’s surplus water depth ensures requirements at each time period under the construction speed.The construction technology takes the surplus water depth at the bottom of the ship as the key control quantity,extends the on-line position as much as possible so as to ensure the length of the construction section and gradually expand the working face.Meanwhile,the technical bottleneck of the construction of TSHD in shallow and narrow waterway has been broken through.