
中国能建葛洲坝集团承建的安哥拉凯凯水电站尾水隧洞1号洞衬砌混凝土浇筑提前77天完成。该电站总装机容量2172兆瓦,建成后将满足安哥拉40%以上的供电需求,并为当地创造大量就业岗位。
AI-generated summary
凯凯水电站是宽扎河流域梯级水电站中的第三级,总装机容量2172兆瓦。该项目旨在缓解安哥拉电力短缺问题并促进当地经济发展。
中新网昆明9月30日电 (黄笛)中国能建葛洲坝集团9月30日消息,由该集团承建的安哥拉凯凯水电站项目关键线路和控制性工程——尾水隧洞1号洞衬砌混凝土浇筑完成,较原计划提前77天,标志着该隧洞全面转入固结灌浆及附属工程施工阶段。
凯凯水电站位于安哥拉北宽扎省栋多市,坐落于安哥拉“母亲河”宽扎河中段,是该流域八级梯级水电站中的第三级。该电站总装机容量2172兆瓦,建成后年平均发电量可达8566吉瓦时,将满足安哥拉40%以上供电需求,建设高峰期为当地提供6000多个就业岗位,促进当地经济及社会发展。
作为凯凯水电站输水系统的重要组成部分,尾水隧洞内连尾水调压室,外接宽扎河,承担着输送水流、排放发电机组尾水的核心功能。尾水隧洞分1号洞、2号洞,两洞平行布置,洞身轴线间距50米,洞长分别为5151.329米、5179.469米。因洞室跨度大、埋深大、距离长,衬砌施工具有作业空间受限、工序交叉频繁、混凝土浇筑量大等特点。
自首仓混凝土开仓浇筑以来,尾水隧洞施工团队科学统筹仰拱、钢筋、衬砌、灌浆四类台车核心资源配置,构建起“仰拱先行作业、钢筋同步跟进、衬砌精准就位、灌浆无缝接力”的高效流水作业生产线。项目团队还动态优化台车转场、定位与拆卸流程,最大限度压缩非作业时间,将单仓施工周期严格控制在5天以内,实现各工序环环相扣、高效衔接。
项目建设过程中,施工团队对钢筋绑扎间距、保护层厚度、模板平整度与刚度、混凝土配合比、坍落度与浇筑振捣等关键参数实施全过程监控。质量人员24小时跟班作业,依托数智化管控平台建立质量问题全生命周期可追溯机制。经检测,本次完成的371.6米衬砌断面尺寸与外观质量均满足设计及规范要求。
为保证施工安全,针对洞内高空作业、起重吊装、临时用电、车辆通行等风险交织的复杂工况,项目部逐一编制专项施工方案与应急预案,持续优化洞内通风、照明与排水作业条件等,实现全周期安全生产零事故。
下一步,项目团队将稳步推进尾水隧洞固结灌浆、2号尾水洞衬砌混凝土浇筑及尾水出口等后续施工。
AI outlook — possibilities, not facts
项目团队将推进尾水隧洞固结灌浆及2号尾水洞衬砌施工
Very likely · Within months

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