The invention relates to an open caisson construction method. The open caisson construction method comprises the following steps that firstly, an elevating device is used for lifting a well pipe and comprises a movable frame, wheels and a handrail; secondly, a grinding device is used for grinding an obstacle, a second winch is arranged on the top of the movable frame and comprises a second steel strand, the grinding device comprises a rack and a grinding mechanism, when the obstacle in an open caisson needs to be ground, the second winch is started firstly, then, the rack can be placed to thebottom of the open caisson, and then the grinding mechanism is used for grinding the obstacle; thirdly, the grinding device is moved out, the second winch is started, and accordingly the grinding device can be moved out; fourthly, the well pipe is loosened, a lifting lug and the well pipe are separated by rotating the lifting lug, then, a first winch is used for making the lifting lug and the wellpipe separated, and accordingly the well pipe can be loosened; and fifthly, soil excavation continues, and the steps from the first step to the fourth step are repeatedly conducted if the obstacle isencountered in the soil excavation process. By means of the open caisson construction method, the possibility of well pipe damage can be reduced.

    本发明涉及一种沉井施工方法,其包括以下步骤:S1、通过提升装置将井管提起:提升装置包括移动架、滚轮以及扶手;S2、通过打磨装置对障碍物进行打磨:移动架的顶部安装有第二卷扬机,第二卷扬机包括第二钢绞线,打磨装置包括机架以及打磨机构;当需要对沉井内的障碍物进行打磨时,先启动第二卷扬机,这样能够将机架放置到沉井的底部,然后通过打磨机构对障碍物进行打磨;S3、移出打磨装置:启动第二卷扬机,从而便可将打磨装置移出;S4、松开井管:通过转动吊耳使吊耳与井管分离,接着通过第一卷扬机使吊耳与井管分离,从而便能松开井管;S5、继续挖土:在挖土过程中如再遇到障碍物,重复步骤1至4。本发明能够降低井管发生损坏的可能性。


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    Title :

    Open caisson construction method


    Additional title:

    一种沉井施工方法


    Contributors:
    XIE GUANGWU (author) / LUO JINLIANG (author) / MAO ZHIMEI (author) / DING HONG (author) / SHUI ZHUN (author)

    Publication date :

    2020-10-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    E02D FOUNDATIONS , Gründungen / B24B MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING , Maschinen, Einrichtungen oder Verfahren zum Schleifen oder Polieren / B66C Krane , CRANES / B66D Haspeln , CAPSTANS / F16F SPRINGS , Federn



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