上软下硬砂砾地层地铁通道施工技术比选  

Comparison and Selection of Construction Technology of Subway Passage in Upper Soft and Lower Hard Gravel Stratum

作　　者：徐毅夫 肖洪波 倪志国 刘运思[2] 彭亚雄 XU Yifu;XIAO Hongbo;NI Zhiguo;LIU Yunsi;PENG Yaxiong(CCFEB Civil Engineering Co.,Ltd.,Changsha,Hunan 410004,China;Hunan Provincial Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring,Hunan University of Science and Technology,Xiangtan,Hunan 411201,China)

机构地区：[1]中建五局土木工程有限公司,湖南长沙410004 [2]湖南科技大学岩土工程稳定控制与健康监测湖南省重点实验室,湖南湘潭411201

出　　处：《施工技术（中英文）》2023年第7期46-50,共5页Construction Technology

基　　金：湖南省自然科学基金(2020JJ5179)。

摘　　要：针对上软下硬砂砾地层地铁通道施工的复杂性,依托长沙市轨道交通5号线火炬村站通道施工,从适用性、工期和造价3个方面对比分析了暗挖法、矩形机械顶管和人工顶管法在上软下硬砂砾地层隧道施工中的优缺点,综合考虑各因素确定了人工顶管法施工。详细分析了人工顶管法施工技术,通过现场实践验证了人工顶管法在上软下硬砂砾岩地层施工的有效性,在保证城市道路路面安全的前提下顺利完成了地铁车站通道施工。For the construction complexity of subway passage in soft upper and hard gravel stratum,the background is the construction of Huojucun station access in Changsha Metro Line 5.From three aspects of applicability,time limit and cost,the advantages and disadvantages of construction methods,the underground excavation method,rectangular mechanical pipe jacking method and manual pipe jacking method,are compared in upper soft and lower hard gravel stratum.The construction method of manual pipe jacking is determined by considering all factors comprehensively.The field practice verifies the effectiveness of artificial pipe jacking method in the upper soft and lower hard conglomerate stratum.Under the premise of ensuring the safety of urban road surface,the construction of subway station access is successfully completed.

关 键 词：地铁 隧道 上软下硬地层 人工顶管法 施工技术 

分 类 号：U459[建筑科学—桥梁与隧道工程]