东南沿海城市隧道岩土工程评价及优选施工工法  

Geotechnical Engineering Evaluation and Optimization of Construction Methods for Tunnels in Southeast Coastal Cities

作　　者：蓝兆松 LAN Zhaosong(Fuzhou Planning&Design Research Institute Group Co.,Ltd.,Fuzhou 350108)

机构地区：[1]福州市规划设计研究院集团有限公司,福建福州350108

出　　处：《福建建筑》2023年第7期45-49,共5页Fujian Architecture & Construction

摘　　要：福州因“城在山中,城中有山”地貌地质特点,在城市隧道建设场地,跨越不同的地质成因类型,地质地貌变化大,岩土类别繁多,地下水位高,给勘察、设计、施工带来难度。结合湖东东路隧道勘察设计,进行岩土工程分析评价,提出施工工法选择建议和控制措施。根据城市浅埋隧道特点,因地制宜分别采用了明挖法、暗挖矿山法。采用围堰施工正交穿越了河流,成功克服了断层破碎带,软弱围岩支护开挖,水的处理,保证了临近地面建筑物的安全。验证了工法的合理性。Due to the geomorphological and geological characteristics of"city in mountain,mountain in city",Fuzhou has crossed different types of geological causes at the construction site of urban tunnel.The geological and geomorphological changes are large,the rock and soil types are various,and the groundwater level is high,which brings difficulties to survey,design,and construction.This article combines the survey and design of Hudong East Road Tunnel,conducts geotechnical analysis and evaluation,and proposes suggestions for construction method selection and control measures.According to the characteristics of shallow buried tunnels in cities,open excavation method and underground mining method have been adopted according to local conditions.The orthogonal crossing of the river was achieved through the use of cofferdam construction,which successfully overcame the fault fracture zone,weak surrounding rock support excavation,and water treatment,ensuring the safety of nearby ground buildings.Verified the rationality of the construction method.

关 键 词：城市隧道 浅埋隧道 软弱围岩 工法选择 

分 类 号：TU4[建筑科学—土工工程]