Abstract: The double linear supporting technique is rarely used in the construction of tunnels in rich groundwater and the welldeveloped karst soft surrounding rock masses. Little published literatures can be found as a construction guide. Therefore, it is critically important for the monitoring of the tunnels during the construction. This paper presents the monitoring results of stress in the rock mass, pore water pressures as well as stress within the liner. The monitoring results can provide the accumulation of the experience for the tunnel construction in similar conditions.

Key words: Groundwater Filled Karst Rock Caverns, Double Liner Support, Field Monitoring, Stress--Strain Properties, BackAnalysis