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| Application of Numerical Simulation in Pumping Tests for Metro |
| CHEN Guang—feng1，CHEN Hui—fang2，ZHAO Rong3，XIA Shi—long4，LI Li—xia4 |
| 1．Tsinghua University，Beijing 100084，China；2．China University of Mining and Technology，Xuzhou，Jiangsu 221116，China；3．Beijing University of Civil Engineering and Architecture，Beijing 100044，China；4．China Railway Construction Group，Beijing 1 00700，China |
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Abstract Research purposes: Pumping settlement is a kind of environmental and geological phenomena that causes lowering and loosing the elevation of the regional surface due to compression of the soil of crust surface and it is one of increasingly serious major geological disasters in the world．How to do the indoor simulation of the field pumping settlement and doing the study on the intemal relation between the pumping settlements of different soils have all important theoretical meaning and applicable value in engineering．
Research conclusions: According to the real engineering conditions of Nanjing metro，the three—dimensional finite element software ADINA was used for simulation analysis and the simulation result of the pumping settlement of this engineering project was obtained．The simulation result basically tallied with the results of the field pumping and the indoor experiment．So application of the numerical simulation can provide the scientific numerical data for prediction of pumping settlement．
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Received: 16 March 2010
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2010, Vol. 27 
