盾构被困实例分析及脱困措施

发布时间：2018-06-23 23:58

本文选题：盾构 + 被困　；参考：《隧道建设》2017年03期

【摘要】：在隧道盾构施工过程中,盾构被困的现象时有发生,对工程施工进度、安全和周围环境等造成不利影响。通过工程实例分析刀盘、盾体和盾尾被困的常见原因,总结相应的脱困措施,得出盾构被困的分类判断依据:1)刀盘开口处被地层中异常渣土填充束缚的判断依据;2)边刀(边滚刀或边刮刀)磨损造成掌子面开挖轮廓不足的判断依据;3)刀盘前方存在硬质障碍物的判断依据。
[Abstract]:In the course of tunnel shield construction, the phenomenon of shield besieging occurs from time to time, which has a negative impact on the construction schedule, safety and surrounding environment of the tunnel. By analyzing the common reasons of the cutter head, shield body and shield tail trapped by engineering examples, the corresponding measures to get rid of the difficulties are summarized. It is concluded that the classification judgment of shield machine being trapped is based on the judgment that the opening of the cutter head is bound by abnormal residual soil filling in the stratum according to 2) the edge cutter (edge hob or edge scraper) wear causes the insufficient profile of the excavation of the face. There is a hard obstacle on the basis of judgment.
【作者单位】：中铁隧道股份有限公司;盾构及掘进技术国家重点实验室;
【分类号】：U455.43

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