百色水利枢纽通航设施工程建设方案

Construction plan for navigation facilities of Baise hydropower station

百色水利枢纽最大通航水头为113.80 m,上游库区水位变幅大,下游右江水位变化速率快,航运用水会对枢纽发电效益产生影响,建设通航设施面临高水头通航、节约水资源、降低对已建设施安全与运行影响等技术难题,建设方案应实现高效通航、运行可靠、维护便利、投资经济等多重目标协同效果最优。百色水利枢纽通航设施工程采用船闸与升船机组合方案、升船机与升船机组合方案、单级升船机方案和多级船闸方案进行技术经济比选,推荐船闸与升船机组合方案,其发挥了船闸适应大水位变幅和升船机提升高度大、过闸时间短的技术优势,并对升船机形式进行比选,推荐的船闸与全平衡卷扬式垂直升船机组合方案能够实现高效通航、运行可靠等建设目标。为实现高坝通航提出了新思路,对类似工程建设及规范修编具有积极的借鉴意义。

The maximum navigable head of Baise hydropower station is 113.80 m.The water level of the upstream reservoir varies greatly,while the water level of the downstream Youjiang changes rapidly.The construction of navigation facilities is faced with such technical problems as navigation at high water head,saving water resources and reducing the influence on the safety and operation of the built facilities.The construction scheme should achieve the optimal coordination effect of multiple objectives,such as high-efficient navigation,reliable operation,convenient maintenance and economic investment.For the navigation facilities of Baise hydropower station,the combination of lock and ship lift,ship lift and ship lift,single-stage ship lift and multi-stage ship lock are adopted for technical and economic comparison.The combination scheme of ship lock and ship lift is recommended,which gives full play to the technical advantages of ship lock adaptation to large water level amplitude variation,large lifting height of ship lock and short time for ship lock passage.We compare and select the types of ship lift.The proposed combination scheme of ship lock and fully balanced vertical ship lift can achieve the construction objectives of efficient navigation and reliable operation.This paper puts forward a new idea for realizing high dam navigation,which has positive reference significance for the construction of similar projects and the revision of codes.