浅埋破碎软岩地层盾构穿越老旧房屋施工关键技术研究

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摘  要：土压平衡盾构在埋深浅、裂隙发育的破碎软岩地层中、地表分布年代久远以及结构老旧的浅基础房屋等工况条件下，施工存在较大风险。该文针对此类工况，从掘进模式、精细化管控措施等方面展开论述，形成一套行之有效的施工应用技术，为类似工程提供参考和借鉴。

关键词：盾构掘进；浅覆土；辅助气压；风险控制；地铁施工

中图分类号：U455.43      文献标志码：A          文章编号：2095-2945（2024）06-0176-04

Abstract： In the working conditions of shallow buried depth， broken soft rock strata with cracks， long-term surface distribution and shallow foundation houses with old structure， there are great risks in the construction of earth pressure balance shield. Aiming at this kind of working condition， this paper discusses from the aspects of tunneling mode， fine management and control measures， and forms a set of effective construction application technology， which can provide reference for similar projects.

Keywords： shield tunneling; shallow overlying soil; auxiliary air pressure; risk control; subway construction

地铁施工时常遇到浅覆土、破碎带以及下穿老旧房屋等叠加工况，使盾构施工面临较大风险。（剩余4633字）