摘要
广州地铁二号线中山纪念堂～越秀公园区间隧道的南端穿越清泉街断裂破碎带,该破碎带由南北侧的破碎带和中间挤压带组成,长度达145m。隧道施工通过该破碎带时采用了全断面水平冻结法作为辅助施工方法,冻结施工总长度115 m,冻结管单管长度最长达62 m,而目前国内外水平冻结的长度仅45 m。文章对该冻结施工方案的产生过程作了回顾,并结合广州地区气候特点和工程地质特点,详尽地分析了长距离水平冻结施工技术在广州地铁清泉街断裂破碎带地层中应用的可行性。
The running tunnel from Zhongshan Memorial to Yuexiu Park undergoes the Qingquanjie fractured zone which consists of 145 m north - south fractured zone and extruded zone. To assure normal construction and safety of the pipelines and building, full - section horizontal ground freezing method is adopted in Guangzhou metro, with the total length of 115 m for frozen ground and 62 m for single frozen pipe. In this paper the feasibility study of this full - section horizontal ground freezing in Guangzhou metro is finished in terms of climate and geological characteristics.
出处
《现代隧道技术》
EI
2002年第4期22-26,共5页
Modern Tunnelling Technology
