EPC项目引水隧洞衬砌之钢筋的设计优化  

Design Optimization of Reinforcing Bars for Headrace Tunnel Lining of EPC Projects

作　　者：林晓旭[1] 夏维学[1] LIN Xiaoxu;XIA Weixue(Sinohydro Bureau 7 Co.,LTD.,Chengdu Sichuan 610213)

机构地区：[1]中国水利水电第七工程局有限公司,四川成都610213

出　　处：《四川水力发电》2023年第5期43-46,70,共5页Sichuan Hydropower

摘　　要：以固增水电站EPC工程为依托,阐述了固增水电站引水隧洞工程施工受征地拆迁、围岩地质条件变化、特殊洞段(如大塌方、蠕变)施工难度大、工期紧等因素影响而无法按期完成建设任务的情况下,项目部在充分考虑围岩稳定、施工安全、施工进度存在问题的前提下,结合经营管理的要求,通过对引水隧洞衬砌钢筋进行设计优化,加快了引水隧洞衬砌的施工进度,提前完成了引水隧洞的工期目标;在降低投资成本的情况下保障了施工安全,满足了设计对围岩稳定的要求。该设计优化为EPC项目的整体建设创造了一定的经济效益,为类似EPC工程水工隧洞施工积累了经验。Based on the EPC project of Guzeng Hydropower Station,this paper expounds the construction of headrace tunnel of Guzeng Hydropower Station is affected by factors such as land expropriation and demolition,geological changes of surrounding rock,difficult construction of special tunnel sections(such as collapse and creep),tight construction period,the project department fully considers the problems existing in surrounding rock stability,construction safety and construction progress problems,combined with the requirements of operation and management and accelerated the construction of the headrace tunnel lining by optimizing the design of the headrace tunnel lining reinforcing bars,and the construction period target of headrace tunnel is completed in advance.Under the condition of reducing the investment cost,the construction safety is guaranteed and the surrounding rock stability is satisfied.The design optimization has created certain economic benefits for the overall construction of EPC projects and accumulated experience for similar EPC engineering hydraulic tunnel construction.

关 键 词：固增水电站 EPC项目 征地拆迁 地质条件变化 特殊洞段 设计优化 快速施工 成本控制 

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