碾压混凝土坝通仓大斜层滚动浇筑技术
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(华能澜沧江水电股份有限公司托巴水电工程建设管理局,云南 迪庆674608 )

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倪磊(1982—),男,高级工程师,主要从事水电工程建设管理工作。E-mail:306839740@qq.com

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TV52

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Continuous rolling placement technology for large inclined layer of roller compacted concrete dam
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(Tuoba Hydroelectric Engineering Construction Management Bureau of Huaneng Lancang River Hydropower Inc., Diqing 674608, China)

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    摘要:

    为实现大坝快速施工,在TB水电工程碾压混凝土大坝施工中创新实施了通仓大斜层滚动浇筑技术。该技术将多个坝段合并为同一浇筑仓,采用端退法快速开仓浇筑,仓面分区管理,浇筑期间可同步备仓,缩短浇筑间歇期,降低砂石及拌和系统供料强度,实现均衡生产,提高月浇筑量。该技术解决了建设工期紧、浇筑强度大、砂石加工及拌和系统产能不足等问题,刷新了碾压混凝土坝的浇筑工期纪录。TB水电工程大坝混凝土浇筑工期仅19个月,浇筑混凝土225万m3,为今后碾压混凝土高坝快速施工提供了成功经验。

    Abstract:

    To achieve rapid construction of dams, an innovative large inclined layer continuous rolling placement technique was used in the TB Hydropower Project. This technique combines multiple dam sections into a single placement zone and utilizes the end-retreat method for swift opening and placement. The zone is managed in sub-sections, allowing for simultaneous preparation of adjacent zones during placement. This reduces the interval between placements, decreases the intensity of material supply demands on aggregate and mixing systems, ensures balanced production, and increases monthly placement volumes. The technique addresses challenges such as tight construction schedules, high placement intensity, and limited capacity of aggregate processing and mixing systems. It sets a new record for the construction timeline of roller compacted concrete (RCC) dams. The TB Hydropower Project completed its RCC placement in just 19 months, with a total concrete volume of 2.25 million m3. This provides valuable experience for the rapid construction of high RCC dams in the future.

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倪磊,张天伟,何绍波,等.碾压混凝土坝通仓大斜层滚动浇筑技术[J].水利水电科技进展,2024,44(z1):42-44, 96.(NI Lei, ZHANG Tianwei, HE Shaobo, et al. Continuous rolling placement technology for large inclined layer of roller compacted concrete dam[J]. Advances in Science and Technology of Water Resources,2024,44(z1):42-44, 96.(in Chinese))

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  • 收稿日期:2024-09-24
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  • 在线发布日期: 2025-04-06
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