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衡阳冶金机械厂热处理车间井式炉大型沉井的平面外框尺寸为28×14米,外框壁厚90厘米,井内设有钢筋混凝土间壁及若干衬梁,根据设计要求刃脚下沉至地面以下16米,如图所示。工程座落部位地质情况是表层为杂填土,深6米左右为硬塑粘土,深10米为砂卵层,旱季施工无多地下水。我们采用了沉井整体预制一次连续开挖下沉的施工方法。刃脚以上主体采用液压滑模施工,其外壁、内间壁及衬梁滑模同时组
Hengyang Metallurgical Machinery Factory heat treatment workshop Well-type furnace Large-scale caisson of the plane outside the frame size of 28 × 14 meters, the outer wall thickness of 90 cm, wells with reinforced concrete walls and a number of lining beams, according to the design requirements of blade feet sink to the ground The following 16 meters, as shown. The geology of the site where the project is located is that the surface is filled with miscellaneous soil, about 6 meters deep is hard plastic clay, and 10 meters deep is sand and egg layer, and there is no much groundwater for dry season construction. We have adopted a construction method in which the open caisson is prefabricated and once it is continuously excavated and sunk. The main body above the cutting edge adopts hydraulic sliding mode construction. The outer wall, the inner wall and the lining girder slide simultaneously