[Purposes]The construction of tunnel under lake is usually characterized by complex geologi-cal conditions,high difficulty coefficient and high risk.In order to study the construction technology of freezing method under the tunnel through the liaison channel under lake,this paper relies on a practical subway project to carry out research.[Methods]Combined with the geological survey data,the special geological conditions and hydrological situation of the lake bottom were comprehensively analyzed,and the surrounding soil was pre-treated by freezing reinforcement technology,the excavation and construc-tion technology was reasonably designed and optimized,and the related construction risks were analyzed and solutions were proposed.[Findings]The results show that the freezing method has high safety and re-liability,and is suitable for various complex hydrogeology,such as soft soil,fluid sand,high water pres-sure and high ground pressure formation.[Conclusions]This study has certain reference significance for the safe and effective construction of the lake-bottom communication channel of urban subway.
关键词
湖底隧道/联络通道/冻结法/施工风险
Key words
lake tunnel/communication channel/freezing method/construction risk
维普
万方数据