某水电站引水洞衬砌混凝土裂缝成因分析  

作　　者：张宏山 

机构地区：[1]中国葛洲坝集团第三工程有限公司,西安710000

出　　处：《科技创新与应用》2023年第30期159-162,共4页Technology Innovation and Application

摘　　要：为制定有效应对隧洞衬砌混凝土裂缝频发的质量控制措施,并分析其潜在成因,该文通过对隧洞衬砌混凝土施工方法、混凝土配合比、温度控制、仓位设计、地质因素及原材料等各方面进行研究分析。结果显示,水化热引起的混凝土内外温差、衬砌仓位设计过长以及施工工艺管控不利是大部分裂缝形成的主要因素。因此,建议类似工程施工质量管控过程中,应将上述因素作为预防裂缝的主控诱因考虑。In order to formulate effective quality control measures to deal with frequent cracks in tunnel lining concrete,and analyze its potential causes,this paper studies and analyzes the construction method of tunnel lining concrete,concrete mix ratio,temperature control,warehouse design,geological factors and raw materials.The internal and external temperature difference of concrete caused by hydration heat,the long design of lining warehouse and the unfavorable control of construction technology are the main factors for the formation of most cracks.Therefore,it is suggested that the above factors should be considered as the main control inducement to prevent cracks in the process of construction quality control of similar projects.

关 键 词：衬砌混凝土 裂缝成因 内外温差 仓位设计 预防措施 

分 类 号：TV554[水利工程—水利水电工程]