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    METHOD FOR WIRE SAW EXCAVATION
    1.
    发明申请
    METHOD FOR WIRE SAW EXCAVATION 有权

    公开(公告)号：US20150174789A1

    公开(公告)日：2015-06-25

    申请号：US14634500

    申请日：2015-02-27

    申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

    发明人： JIHAD HASSAN ALSADAH ,  Elsayed Ahamad Mogahed

    IPC分类号： B28D1/08 ,  E21D1/06 ,  E21D9/10 ,  E21C25/54

    CPC分类号： B28D1/088 ,  B23D57/0007 ,  E21B7/068 ,  E21C25/54 ,  E21C25/56 ,  E21D1/06 ,  E21D9/1053

    摘要： The method for wire saw excavation provides a significant savings in time, effort, and expense in the cutting of a core of material from a solid substrate such as rock or concrete. A single downhole is formed, and a robotic excavator then forms a continuous, closed loop base passage at the distal end of the downhole to define the periphery of the core to be cut. When the base passage has been completed, the robotic excavator is removed and two subsurface guide pulleys are placed in the bottom of the downhole. A wire saw is passed from a first surface pulley around the first and second subsurface pulleys and back to a second surface pulley. The surface pulleys are advanced along the predetermined periphery of the core at the same rate as the subsurface pulleys, so that the saw simultaneously cuts the periphery and the bottom of the core.

    Shaft excavation method
    2.
    发明授权
    Shaft excavation method 失效
    轴挖方法

    公开(公告)号：US4950034A

    公开(公告)日：1990-08-21

    申请号：US421462

    申请日：1989-10-16

    申请人： Neil Reid

    发明人： Neil Reid

    IPC分类号： B23D57/00 ,  B28D1/08 ,  E21C25/54 ,  E21D1/03

    CPC分类号： B23D57/0007 ,  B28D1/088 ,  E21C25/54 ,  E21D1/03

    摘要： A method for sinking a shaft having a wide diameter e.g. 4 meters. A concrete diaphragm wall is formed with five radially inwardly extending sections (12), in each of which a guide hole (13) is formed. Five outer boreholes are drilled to depth using the guide holes and a central borehole (14) is also drilled to depth. The ground within the wall is excavated to rock level. Vertical cuts are made between adjacent outer boreholes (14) and between the central borehole (14) and the outer boreholes (15) using a wire (19) saw cutter. Cross cuts are then made to form separated segments (33) of rock which are removed sequentially. This is repeated progressively downwards to the required depth.