浅析盾构始发施工技术控制

浅析盾构始发施工技术控制浅析盾构始发施工技术控制 摘要：随着盾构法施工在地下隧道工程中的广泛使用，隧道盾构施工对周围环境的影响，特别是地面沉降问题受到越来越多的关注。对于盾构施工而言，如何控制盾构的始发是关系整个工程的成败的最关键环节，在盾构初始阶段重中之重是如何控制好下井阶段的土压力对整个盾构施工的影响，就是要使密封仓内的土压力和开挖面的水土压力保持动态平衡。假如密封仓内的土压力大于开挖面的水土压力，地表将发生隆起；反之，假如密封仓的土压力小于开挖面的水土压力，地表将发生沉陷。 关键词：地铁工程、盾构机安装、技术措施 Abstract: with the shield tunneling in the underground tunnel project of the widely used, shield tunneling construction on the surrounding environment influence, especially the ground subsidence receiving more and more attention. For shield for construction, how to control the initial shield is the whole project of the success or failure of the relationship between the most key link, in the initial stage of shield top priority is how to control the next stage of the well to the whole earth pressure of shield construction influence, is to make the earth pressure seal in the warehouse and the excavation of soil and water pressure to keep dynamic balance. If the earth pressure seal warehouse in greater than the excavation of soil and water pressure, surface will occur uplift; Conversely, if the seal warehouse soil pressure of the water pressure is less than excavation, the surface subsidence will happen. Key words: the subway engineering, shield construction machine installation, technical measures 中图分类号：TU74 文献标识码： A 文章编号： 引言：根据近几年的城市轨道交通的飞速进展，事故频繁发生，而且使用盾构在入洞始发阶段出问题的概率很高，地下施工一旦发生事故可能就会产生灾难性的后果。选题盾构施工的特点，控制好盾构始发保证在入洞之际的顺利出发从而保证整个施工过程的安全进行。本文重点介绍盾构始...