A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
River channel cofferdam diversion construction method
The invention discloses a river channel cofferdam diversion construction method. The river channel cofferdam diversion construction method comprises the steps that the excavation axis of a diversion channel and the excavation axis of a pipeline ditch are determined, and the diversion channel is excavated on one side of a river along the excavation axis; cofferdam construction is carried out around the construction site, cofferdam dams are constructed, and water retaining dams are constructed on the upstream and downstream of the river channel where the pipeline ditch is excavated and on the two sides of the pipeline ditch; after cofferdam construction is completed, dredging is carried out, two drainage ditches are dug in the two sides of the wide river bottom operation zone after dredging, and a plash is arranged; the pipeline ditch is excavated along the excavation axis of the pipeline ditch, and seepage water is pumped and drained into the drainage ditch while the pipeline ditch is excavated; every two adjacent prefabricated pipe sections are connected to form a pipeline, and the whole pipeline is lowered to the pipeline ditch and penetrates through the river channel; and counterweight is added to the pipeline, the pipeline ditch is backfilled, the cofferdam is dismantled, and the landform of the construction section is recovered. The defects of geological conditions can be overcome, landslide and collapse in the pit are effectively avoided, and the construction efficiency of the river channel pipe ditch is improved.
本发明公开了一种河道围堰导流施工方法，包括：确定导流渠、管道沟的开挖轴线，沿着开挖轴线在河流一侧开挖导流渠；在施工场地周围进行围堰施工，构筑围堰坝，在管道沟开挖经过的河道处的上下游，管道沟两侧构筑挡水坝；围堰施工完成后清淤，清淤后在开阔处河底作业带两边开挖两条排水沟，设置积水坑；沿着管道沟的开挖轴线开挖管道沟，边开挖管道沟边抽排渗水到排水沟；将相邻两段预制管段连接，形成管道，将管道整体下到管道沟并穿越河道；给管道配加配重，回填管道沟，拆除围堰坝，恢复施工段的地形地貌。本发明能够克服地质条件的缺陷，有效避免坑内滑坡和塌方，提高河道管沟施工效率。
River channel cofferdam diversion construction method
The invention discloses a river channel cofferdam diversion construction method. The river channel cofferdam diversion construction method comprises the steps that the excavation axis of a diversion channel and the excavation axis of a pipeline ditch are determined, and the diversion channel is excavated on one side of a river along the excavation axis; cofferdam construction is carried out around the construction site, cofferdam dams are constructed, and water retaining dams are constructed on the upstream and downstream of the river channel where the pipeline ditch is excavated and on the two sides of the pipeline ditch; after cofferdam construction is completed, dredging is carried out, two drainage ditches are dug in the two sides of the wide river bottom operation zone after dredging, and a plash is arranged; the pipeline ditch is excavated along the excavation axis of the pipeline ditch, and seepage water is pumped and drained into the drainage ditch while the pipeline ditch is excavated; every two adjacent prefabricated pipe sections are connected to form a pipeline, and the whole pipeline is lowered to the pipeline ditch and penetrates through the river channel; and counterweight is added to the pipeline, the pipeline ditch is backfilled, the cofferdam is dismantled, and the landform of the construction section is recovered. The defects of geological conditions can be overcome, landslide and collapse in the pit are effectively avoided, and the construction efficiency of the river channel pipe ditch is improved.
本发明公开了一种河道围堰导流施工方法，包括：确定导流渠、管道沟的开挖轴线，沿着开挖轴线在河流一侧开挖导流渠；在施工场地周围进行围堰施工，构筑围堰坝，在管道沟开挖经过的河道处的上下游，管道沟两侧构筑挡水坝；围堰施工完成后清淤，清淤后在开阔处河底作业带两边开挖两条排水沟，设置积水坑；沿着管道沟的开挖轴线开挖管道沟，边开挖管道沟边抽排渗水到排水沟；将相邻两段预制管段连接，形成管道，将管道整体下到管道沟并穿越河道；给管道配加配重，回填管道沟，拆除围堰坝，恢复施工段的地形地貌。本发明能够克服地质条件的缺陷，有效避免坑内滑坡和塌方，提高河道管沟施工效率。
River channel cofferdam diversion construction method
河道围堰导流施工方法
LIAN BI (author) / RU GUOPING (author) / RU GUOZHONG (author)
2021-04-20
Patent
Electronic Resource
Chinese
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