Abstract：A consensus about the understanding of groundwater effecting on tunnels is not reached yet up to now，and the impact of groundwater pressure on supporting structure was not fully understood. Based on this，model tests are carried out to understand the effects of water pressure on tunnel. In a 300–350 km/h high-speed railway project，the design of model test included simulated rock，test fluid，material parameters，test conditions，test equipment. In this test，various working conditions were considered，such as 1 m，2 m and 4 m water heads without supporting and with free drainage，lined with undrained condition. With the testing results，a relatively clear understanding was obtained，i.e. the changing process of groundwater seepage caused by tunnel excavation and shoring，the correlation between water load and groundwater discharge methods. Furthermore，numerical simulations were performed based on the model test results.
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LI Cangsong，GU Ting，QI Cheng，DING Jianfang. WATER PRESSURE MODEL TEST ON UNDISTURBED
EXCAVATION TUNNEL. , 2013, 32(9): 1785-1790.
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2013, Vol. 32 
