三门峡水利枢纽工程改扩建设计

发布时间：2018-07-28 09:23

【摘要】：通过对三门峡水利枢纽工程建成后出现的库区淤积等问题的研究,针对性地进行了改扩建设计,1965—1968年进行了第一次改建,增设2条泄洪排沙隧洞、改建4条压力钢管参与泄洪,枢纽315 m水位下泄流规模由原设计的3 486 m~3/s提高到6 102 m3/s,"蓄水拦沙"的运用原则调整为"滞洪排沙",减轻了潼关以上库区淤积,但枢纽泄流排沙能力仍然不足。之后进行第二次改建及泄流工程二期改建,陆续打开12条导流底孔,安装5台发电机组,枢纽315 m水位含机组泄量的下泄总流量达到10 096 m~3/s,水库基本达到年内冲淤平衡。后又完成了机组扩建、改造等工程,泄流排沙能力逐步提高,枢纽工程功能逐步完善,完成了由"滞洪排沙"向"蓄清排浑"的重要调整,枢纽全面发挥了防洪、防凌、灌溉、发电和供水的综合效益。
[Abstract]:Through the study of the sedimentation in the reservoir area after the completion of the Sanmenxia water control project, the design of the reconstruction and expansion was carried out. The first reconstruction was carried out in 1965 - 1968. 2 flood discharge and sand draining tunnels were added and 4 penstocks were rebuilt to participate in flood discharge. The discharge scale of the 315 m water level of the hub was raised from the original design 3486 m~3/s to 6102 m. 3/s, the application principle of "water storage and sand blocking" is adjusted to "flood detention and sediment discharge", which alleviates the siltation in the reservoir area above Tongguan, but the discharge and sediment discharge capacity of the hub is still insufficient. After that, the second reconstruction and discharge projects are rebuilt in the two phase, 12 diversion bottom holes are opened, 5 generator sets are installed, and the total discharge of the water level of 315 m water level of the hub is reached to 100 96 m~3/s, the reservoir basically reached the balance of erosion and siltation during the year, and then completed the expansion of the unit, the transformation and other projects, the discharge and sediment discharge capacity gradually improved, the function of the hub project was gradually perfected, and the important adjustment from "flood detention and sediment discharge" to "storing and clearing the muddy" was completed, and the comprehensive benefits of flood prevention, flood prevention, irrigation, power generation and water supply were fully played.
【作者单位】：中水北方勘测设计研究有限责任公司;
【分类号】：TV632

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