日本从19世纪70年代到20世纪20年代修建的隧洞由于衬砌混凝土老化、剥落,而导致漏水,因此需要修补的隧洞很多。为了应付这一局面,日本大成公司研究开发了隧洞修补新技术,这里介绍的是用聚合物浸渍混凝土预制板修补水工隧洞的技术。大成公司所使用的聚合物浸渍混凝土预制板厚度为15～40mm,具有高强、耐磨、耐化学药剂的优点。该技术是用聚合 The tunnels built in Japan from the 1870s to the 1920s lost much of their water due to aging and peeling of the lining concrete, so there were many tunnels to be repaired. To cope with this situation, Japan’s Dacheng company developed a new technology for tunnel repair, here is the use of polymer impregnated concrete prefabricated repair of hydraulic tunnel technology. Dacheng company used polymer impregnated concrete precast thickness of 15 ~ 40mm, with high strength, wear resistance, chemical resistance advantages. The technique is to use aggregation