超深竖井衬砌混凝土施工技术与配合比试验研究  

Construction Technology of Ultra-deep Shaft Lining Concrete and Experimental Study on Mix Ratio of Concrete

作　　者：樊春喜 宋美丽 FAN Chunxi;SONG Meili(China Gezhouba Group Testing Co.,Ltd,Yichang 443002,China)

机构地区：[1]葛洲坝集团试验检测有限公司,湖北宜昌443002

出　　处：《水电与新能源》2023年第3期14-17,共4页Hydropower and New Energy

摘　　要：巴基斯坦N-J水电站调压竖井衬砌后直径9.5 m,井身总衬砌高度为353 m。衬砌混凝土通过直溜管+缓降器垂直运输方式采用滑模浇筑施工。根据施工技术要求以及工程配合比设计经验,在室内设计不同凝结时间、不同坍落度的初步配合比,再通过现场生产性试验确定满足施工的最终配合比。The ultra-deep surge shaft in Pakistan N-J Hydropower Station is of 9.5 m diameter after lining,and the total lining height of the shaft is 353 m.The lining concrete is transported vertically through straight chute and retarder to the site and then constructed with sliding forms.According to the construction technical requirements and the engineering experience in mix ratio design of concrete,preliminary mix ratios are designed in laboratory with different setting times and different slumps,and the final mix ratio meeting the construction requirement is determined through the in-situ production tests.

关 键 词：超深竖井 衬砌混凝土 凝结时间 坍落度 施工配合比 

分 类 号：TV544[水利工程—水利水电工程]