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某水电站引水隧洞由于特大地震灾害的影响而受到重创,造成了隧道之中多处混凝土出现了垮塌现象,进而引起整个隧道顶部以及边拱出现了连续性裂缝,与此同时还出现了混凝土裂缝后变形隐患,以致隧洞无法正常使用。基于这种情况,在处理的过程中主要是针对隧道顶部垮塌、边拱裂缝以及底板淘刷现象较为严重的部位进行处理。一般在处理工作中我们主要采用对垮塌的混凝土采用锚喷挂网支护、隧洞顶部脱空地带进行回填灌浆和混凝土裂缝化学灌浆处理。本文就这些处理方法进行分析与探讨,以供同行工作参考借鉴。
The diversion tunnel of a hydropower station has been hit hard by the earthquake disaster. As a result, many concrete in the tunnel collapsed, which led to the continuous cracks in the top and side arches of the tunnel. At the same time, concrete cracks appeared Deformation, so that the tunnel can not be used normally. Based on this situation, mainly in the process of dealing with the collapse of the top of the tunnel, side arch cracks and floor scouring more serious parts of the site for processing. Generally, we mainly use the anchorage and spray-net support to the collapsed concrete in the treatment work and the backfill grouting and the concrete crack chemical grouting treatment at the top of the tunnel. This article carries on the analysis and the discussion to these processing methods, for the reference of the colleague’s work.