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溪洛渡水电站左岸导流洞进口闸室竖井是目前国内断面最大的导流竖井,其混凝土衬砌总量为11.57万m3,由于受各种原因影响,致使施工工期特别紧张,且混凝土浇筑工程量大、边顶拱衬砌厚度大、闸室混凝土本身结构复杂,因此施工难度非常大。根据左岸进口闸室竖井工期要求,左岸1~3号闸室竖井同时进行施工,依据其结构特点,混凝土施工采用“分区、分层、分段”的总体思路进行施工组织设计。在混凝土施工过程中,通过对施工方案的调整优化,使闸室竖井混凝土浇筑进展顺利。
The inlet silo shaft of the diversion tunnel on the left bank of the Xiluodu Hydropower Station is the largest diversion shaft at present in China with a total concrete lining of 115,700 m3. Due to various reasons, the construction period is particularly tense and the volume of concrete pouring works is large, The thickness of the side arch lining is large, the structure of the chamber concrete itself is complex, so the construction is very difficult. According to the construction requirements of the left bank inlet silo shaft, the No.1 to No.3 shaft chamber on the left bank shall be constructed at the same time. According to its structural features, the construction design of the concrete construction adopts the general idea of “zoning, layering and segmenting”. In the process of concrete construction, through the adjustment and optimization of the construction scheme, the concrete of the shaft chamber shaft is progressing smoothly.