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    • 2. 发明申请
    • IMPROVED ANCHORING SYSTEM
    • 改进的锚固系统
    • WO1997047824A1
    • 1997-12-18
    • PCT/AU1997000365
    • 1997-06-10
    • TRISTANAGH PTY. LTD.MACDONALD, Ian, RobertMACDONALD, Ian, Grant
    • TRISTANAGH PTY. LTD.
    • E02D05/80
    • E02D5/80
    • An anchoring system for earth formations comprises an anchor head (40) having two or more pivotal flukes (44) movable between a retracted position and an extended position to secure the anchor in the base of borehole. The anchor head (44) is attached to a rigid tensioning rod (50) about which a tubular driving tool (70) locates to insert the anchor head using cutting blades (43a) in rocky soils. A retractable tubular shroud extends about the driving tool to form a conduit through which loosened earth may be flushed by direction of a pressurized fluid via the driving tool (70). The driving tool (70) is also employed to introduce grout into the borehole. The driving tool (70), with a socket (71) at one end, is operable to rotate a nut (64) to advance a spacer (60) towards the body (41) of the anchor (40), causing the flukes (44) to be swung out from the retracted position.
    • 用于地层的锚定系统包括具有两个或更多个枢转抽头(44)的锚定头(40),所述锚杆能在缩回位置和延伸位置之间移动,以将锚固件固定在钻孔的底部中。 锚头(44)附接到刚性张紧杆(50),管状驱动工具(70)位于该刚性张紧杆(50)周围,以使用切割刀片(43a)在岩土中将锚头插入。 可伸缩的管状护罩围绕所述驱动工具延伸以形成导管,通过所述驱动工具(70)可以通过加压流体的方向将松动的土壤冲刷穿过所述管道。 驱动工具(70)也用于将灌浆引入钻孔中。 在一端具有插座(71)的驱动工具(70)可操作以使螺母(64)旋转以使间隔件(60)朝向锚(40)的主体(41)前进,导致吸管( 44)从缩回位置摆出。