洞内超前钻探注浆在盾构过溶洞区的施工技术

Construction Technology of Probe Drilling and Grouting Through Karst Zone

盾构隧道穿越香港米埔湿地自然保护区及大理岩溶洞区,由于受香港湿地公约限制,地面不允许采取任何工程加固措施。深港隧道通过洞内超前钻探并注浆加固地层,保证盾构安全顺利穿越溶洞区,在国内尚属首例。该工程的的成功实施填补了国内盾构隧道在洞内加固地层、穿越溶洞区施工技术的空白。

TBM passing through Maipo wetland nature reserve and Dali Karst zone,due to the restriction of ramsar convention,is not allowed to take any engineering measures on ground. Probe drilling and grouting were used to make the ground treatment in Shenzhen-Hong Kong section tunnel to ensure the TBM pass through the Karst zone safely and successfully,which is the first case in China. The success of this work has filled the blank in the construction technology of ground treatment in tunnel for TBM passing the Karst zone.