输水洞侵蚀破坏机理分析及防护措施研究

Analysis of erosion mechanism for delivery tunnels and research on its countermeasures

在实际工程调查的基础上,针对低速输水洞中比较突出的侵蚀破坏病害,从混凝土的化学成分与环境水间进行的溶蚀和碳酸水侵蚀的角度出发,研究了输水隧洞混凝土衬砌侵蚀破坏机理,分析了表层侵蚀和穿壁渗漏侵蚀破坏成因和过程,并提出了相应的工程处理措施,对日前众多的输水洞除险加固具有实际指导意义.

Based on the actual investigations, this paper has aimed at the erosion damage of delivery tunnels in which the velocity of flow is low. And based on chemical action between the concrete and surrounding water, the mechanism of erosion damage is researched; the causes and process of the surface erosion damage and the inside erosion damage caused by seepage are analyzed; and some corresponding measures are proposed so as to guide the reinforcement of numerous delivery tunnels today.