摘要
针对城区隧道施工的特点,以广州市某隧道工程为依托,综合了隧道设计方案、场地岩土工程地质、水文条件和场区周边环境情况,针对工程场地砂层发育和施工空间狭窄,基坑支护设计采用放坡和土钉墙支护,搅拌桩或旋喷桩止水的综合支护设计方案,解决隧道基坑支护难题。该项工程的成功修建,对今后同类型工程的基坑开挖支护的技术方法和施工方法提供了经验。
This paper aims to investigate the characteristics of urban tunnel construction.A case of a tunnel project in Guangzhou City which relating to tunnel design,site geotechnical engineering,geological hydrological conditions and the area surrounding environment is analysed.Through the analysis of geological and site conditions,and considering the sand project site and low clearance under the bridge,the design of the excavation of soil by grading and nailing wall,or rotating pile seal support design a comprehensive plan were adopt.The goal of economic efficiency,effective control of the total project investment was reached.successfully and provide practical technique and construction method for future local similar projects retaining and protecting for foundation.
出处
《城市勘测》
2012年第2期170-172,共3页
Urban Geotechnical Investigation & Surveying
关键词
隧道
基坑支护
土钉支护
tunnel
retaining and protecting for foundation excavation
soil nailing support
