论文部分内容阅读
深圳地铁一期工程国贸站—老街站区间暗挖隧道设计为单洞双层重叠隧道,国内地铁工程首次采用该种特殊结构形式,隧道采用台阶法分四步开挖。根据施工地表沉降实测资料,对施工引起的地表沉降规律进行了分析,如重叠隧道施工引起地表沉降范围、沉降大小、沉降历时规律与特点等。对影响地表沉降规律的主要因素地质条件、台阶长度等进行较全面的分析,并提出了控制地表沉降的相应的对策与措施。
The first phase of Shenzhen Metro project Guomao Station - Old Street Station interval tunnel design double tunnel double overlap tunnel, the first time the domestic subway project with this special structure, the tunnel step by step excavation in four steps. According to the measured data of construction surface subsidence, the law of surface subsidence caused by the construction is analyzed. For example, the overlap subsidence caused by surface construction, the size of subsidence, the law and characteristics of subsidence duration and so on. The main factors affecting the law of surface subsidence, such as the geological conditions, the length of the steps and so on, are analyzed in a comprehensive way. Corresponding countermeasures and measures are given to control the ground subsidence.