DEVELOPMENT AND PRELIMINARY TEST OF EQUIPMENT
OF MESOSCALE TEST IN URBAN UNDERGROUND ENGINEERING
QIN Weimin，REN Weizhong，ZHOU Zhengming
(State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，
Chinese Academy of Sciences，Wuhan，Hubei 430071，China)
Abstract：Aiming at a series of environmental protection problem brought by urban construction including highway tunnel，subway and tunnel construction，the development of mesoscale physical scale model test equipment is carried out. The test equipment mainly consists of bench system，measuring equipment，and tunnelling system，which belongs to separate component. Because of the characteristics design of tunnelling system，influence on surrounding environment by physical simulation of different construction methods are respectively achieved in three aspects including tunnelling，underground excavation and pipe culverts shield pushing. After the materials formation ratio test，the test methods and processes of geologic strata material are selected. The preliminary test of tunnelling model shows that the value of surface subsidence predicted by Peck formulas is too small，and its transverse settlement trough shape has a certain gap by comparing with Gaussian curve，so it is not appropriate for prediction of surface subsidence by Peck formulas in this type of soil mechanics test. According to some of the questions found in preliminary tests of tunnelling simulation，some follow-up research prospects are given by the researchers.
覃卫民，任伟中，周正明. 城市地下工程中尺度试验装置的研制及初步试验应用[J]. 岩石力学与工程学报, 2012, 31(s2): 3994-4000.
QIN Weimin，REN Weizhong，ZHOU Zhengming. DEVELOPMENT AND PRELIMINARY TEST OF EQUIPMENT
OF MESOSCALE TEST IN URBAN UNDERGROUND ENGINEERING. , 2012, 31(s2): 3994-4000.
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2012, Vol. 31 
