河南洛宁电站下库大坝面板提前完成浇筑
责任编辑:cnlng    浏览:199次    时间: 2024-04-17 11:04:33    | 来源:中国水利水电第七工程局有限公司 作者:黄琪   

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摘要:洛宁抽蓄电站下库大坝迎水面为钢筋混凝土面板,按宽度16米和8米进行分块,共计27块。面板浇筑采用无轨滑模法,分别用18米和9.6米滑模进行浇筑,总体浇筑面积约为3.4万平方米,浇筑量约为1.4万立方米,钢筋制安量约1750吨。电站下库面板整体施工横跨冬春两季,气温变..

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洛宁抽蓄电站下库大坝迎水面为钢筋混凝土面板,按宽度16米和8米进行分块,共计27块。面板浇筑采用无轨滑模法,分别用18米和9.6米滑模进行浇筑,总体浇筑面积约为3.4万平方米,浇筑量约为1.4万立方米,钢筋制安量约1750吨。

电站下库面板整体施工横跨冬春两季,气温变化大,坝顶作业面较窄,现场施工条件复杂协调难度高,为此项目部科学规划,精心组织,保障混凝土浇筑质量,不断优化施工工艺,针对两侧小面积三角块面板,采取更适宜的组合钢模进行浇筑;提前储备保温材料,采用塑料薄膜、保温被对钢筋、已浇筑块覆盖防护;保证资源投入,两台滑模同时施工,加快施工进度,确保浇筑连续性。下库面板混凝土于2024年3月2日开始浇筑,经过44天高强度施工,顺利浇筑完成,为下一步蓄水验收工作奠定了坚实基础。

该电站是国家“十三五”规划重大能源项目,装机容量140万千瓦,全部建成后,每年可减少原煤消耗11.8万吨、减排二氧化碳约31万吨,将成为中部地区“碳达峰、碳中和”的重要支撑工程,对增强河南电网调峰能力、优化电源结构、提高电网运行安全性和促进地方经济社会发展都具有重要意义。

The facing surface of the lower reservoir dam of Luoning Pumping and storage Power Station is made of reinforced concrete panels, which are divided into 27 pieces according to the width of 16 meters and 8 meters. Panel pouring using trackless sliding form method, respectively, with 18 meters and 9.6 meters of sliding form for pouring, the overall pouring area of about 34,000 square meters, pouring volume of about 14,000 cubic meters, steel safety capacity of about 1750 tons.

The overall construction of the lower storage panel of the power station spans the winter and spring seasons, the temperature changes greatly, the dam top working surface is narrow, and the site construction conditions are complex and difficult to coordinate. Therefore, the project department has scientific planning and careful organization to ensure the quality of concrete pouring and constantly optimize the construction technology. For the small triangular panels on both sides, more appropriate composite steel molds are adopted for pouring. Reserve insulation materials in advance, and use plastic film, insulation covering steel bars and poured blocks for protection; To ensure the input of resources, two sliding forms are constructed at the same time, speeding up the construction progress and ensuring the continuity of pouring. The concrete of the lower reservoir panel began pouring on March 2, 2024, and after 44 days of high-intensity construction, the pouring was successfully completed, laying a solid foundation for the next step of water storage acceptance work.

The power station is a major energy project in the national "13th Five-Year Plan", with an installed capacity of 1.4 million kilowatts. After completion, it can reduce raw coal consumption by 118,000 tons per year and reduce carbon dioxide by about 310,000 tons. It will become an important support project for "carbon peak and carbon neutrality" in the central region. It is of great significance to enhance the peak load capacity of Henan power grid, optimize the power supply structure, improve the safety of power grid operation and promote the local economic and social development.


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