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以长沙地铁盾构施工的实践为例,从工艺特点、施工原理、孤石群地层探测、盾构优化改造、孤石群地层掘进、跟踪注浆、灰岩掘进、安全控制等几个方面,详细论述了孤石群地层盾构施工技术。通过施工效果反馈该技术运用的科学性和适用性,为城市地铁盾构的安全快速施工提供借鉴和参考。
Taking the practice of Changsha subway shield construction as an example, from the aspects of process characteristics, construction principle, the exploration of the Bashi formation, the optimization and reconstruction of the shield, the excavation of the Bashi formation, the tracking grouting, the limestone excavation and the safety control, The construction technology of shield in Bashi formations is discussed in detail. Through the construction effect, the scientific and practical application of the technology is fed back to provide reference and reference for safe and rapid construction of urban subway shield.