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《Journal of Chang'an University(Natural Science Edition)》 2010-01
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Affection of soil warehouses pressure of EPB shield on ground settlement

HAN Ri-mei1,3,SONG Zhan-ping2,4,XIE Yong-li1,WU Huan-tong4(1.School of Highway,Chang'an University,Xi'an 710064,Shaanxi,China;2.School of Civil Engineering,Xi'an Architecture and Technology University,Xi'an 710055,Shaanxi,China;3.Xi'an Subway Co Ltd,Xi'an 710018,Shaanxi,China;4.China Railway 13th Bureau Group Corporation,Changchun 130033,Jilin,China)  
This paper takes the shield construction of Guangzhou Metro Line 4 as an example,carries out three dimensional numerical experiments on the ground settlement rule which causes by the soil warehouse pressure of EPB shield.The results show that: with the increase of soil pressure warehouses,the settlement behind the working face is reduced,but the front working face is increased unceasingly,and the raising often occurs in front of the general range of 10 m uplift.When the soil warehouses pressure is at the over balance condition,the raising of ground is increased,the settlement is reduced,and the settlement of the reduction is much larger than the one of raising.The settlement caused by over balance is the smallest.To increase the soil warehouse pressure is an effective method to reduce the settlement under the condition that the shield's front soil body does not be destroy.2 tabs,4 figs,7 refs.
【Fund】: 陕西省教育厅基础研究基金项目(09KJK538);; 中国博士后科学研究基金项目(20070411123)
【CateGory Index】: U455.43
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