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燕山水库位于淮河流域沙颍河主要支流澧河上游干江河上,泄洪洞工程是燕山水库的主要永久建筑物之一,它担负着泄洪、水库放空及施工期间的导流任务。洞身断面呈城门洞形,断面尺寸为6m×7．8m．衬砌厚度为80cm,洞身末端为扩散段及消力池,进口设控制闸。洞身是泄洪洞工程的主要分部工程,为保证施工质量,采用直墙圆拱形自形式钢模台车,泵送混凝土入仓。现就该城门型隧洞混凝土施工中,在施工工艺控制,存在的问题处理,依据实践经验作一个总结。
Yanshan Reservoir is located in the upper reaches of the upper reaches of the Shaying River, the main tributary of the Shaying River in the Huaihe River Basin. The flood discharge tunnel project is one of the major permanent structures in the Yanshan Reservoir. It is responsible for flood discharge, reservoir emptying and diversion during construction. The section of the cave body is in the shape of a city gate with a section size of 6m × 7.8m. Lining thickness of 80cm, the end of the hole for the diffusion section and stilling pool, the import control gate. The cave body is the main part of flood discharge tunnel project, in order to ensure the construction quality, the use of straight-walled circular arch-shaped steel mold trolley, pumping concrete warehousing. Now on the city gate tunnel concrete construction, construction process control, the existing problems, based on practical experience to make a summary.