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    • 12. 发明授权
    • Shield driving process for enlargement
    • 盾牌驾驶过程扩大
    • US4530621A
    • 1985-07-23
    • US558973
    • 1983-12-07
    • Toshio FurutaNobuhiko KawamotoAkira Honma
    • Toshio FurutaNobuhiko KawamotoAkira Honma
    • E21D9/06E21D9/00E21D9/10E21D11/04E21D13/00E21D11/00
    • E21D9/10E21D13/00E21D9/00
    • A shield driving apparatus and process for enlarging the periphery of a predetermined region of an existing tunnel lined with a primary shield segment assembly wherein some segments of such a region of the primary shield segment assembly that correspond to the predetermined region to be enlarged are removed in series along the axial direction of the existing tunnel. The exposed ground resulting from the removal of the primary shield segment assembly is excavated to form a cavity therein. A circumferentially driving shield machine is positioned in the cavity and is mounted to bridge between the two guide rings provided at both end portions of the predetermined region and along the periphery of the existing tunnel. Circumferential segments are mounted to bridge between the two rings and are fixedly pile one upon another on the rear surface of the shield machine so as to form a series thereof connected to the shield machine while the shield machine is driven forward step by step in the circumferential direction of the existing tunnel along on the guide rings by applying a pressure to the rearmost one of the piled circumferential segments progressively formed. The enlargement of the periphery of the predetermined region lined with a ring of a series of circumferential segments is thus completed.
    • 一种用于扩大现有隧道的预定区域的周边的屏蔽驱动装置和方法,该隧道内衬有主屏蔽段组件,其中主屏蔽段组件的这种区域的对应于要扩大的预定区域的一些区段被去除 沿着现有隧道的轴向串联。 从主屏蔽段组件的移除产生的暴露的地面被挖掘以在其中形成空腔。 周向驱动屏蔽机器定位在空腔中,并且安装成在设置在预定区域的两个端部处并沿着现有隧道的周边的两个引导环之间桥接。 环形节段安装在两个环之间的桥梁上,并且在屏蔽机的后表面上彼此固定地堆叠,以形成连接到屏蔽机器的一系列,同时屏蔽机器沿圆周方向逐步驱动 沿着引导环上的现有隧道的方向施加压力到逐渐形成的堆积的周向段中的最后一个。 因此,完成了一系列周向段的环的预定区域的周边的扩大。