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地铁隧道盾构施工技术概述(一)地铁隧道盾构施工工艺分析所谓盾构施工,即利用盾构机在地表下开挖隧道的一种施工方法,通过利用盾构机外壳对土体产生的抵抗作用,再利用千斤顶顶住既有管片,在活塞杆推力的作用下,促使盾构刀盘在土层中不断切削土地并不断前进。另外当其每掘一环便衬砌一环,并利用盾构机机尾的管片拼装机实现管片的定位安装,再运用水泥浆将管片和周围的岩土之间的间隙填充,如此便可以达到抵抗后续变形和逐渐变化的围岩产生的压力,整个工艺可以
Shield Tunnel Construction Technology Overview (A) Subway Tunnel Shield Construction Technology Analysis of the so-called shield construction, that is, the use of shield tunneling under the surface of a construction method, through the use of shield shell generated on the soil Resist the role of re-use of jacks to withstand the existing segment, the thrust of the piston rod to promote the shield cutter in the soil continue to cut the land and continue to move forward. In addition, when each of them dig a ring, and the use of shield tail pipe assembly machine to achieve positioning and installation of the segment, and then use the slurry to the gap between the pieces and the surrounding rock fill, and so on It can be achieved against the subsequent deformation and gradual changes in the pressure of the surrounding rock, the entire process can