›› 2012, Vol. 33 ›› Issue (9): 2713-2718.

• Geotechnical Engineering • Previous Articles     Next Articles

Study of distribution properties of water and earth pressure at excavation face and in chamber of earth pressure balance shield with super-large diameter

HOU Yong-mao1, 2, YANG Guo-xiang2, GE Xiu-run1, ZHENG Yi-feng2, GU Chen-ying2   

  1. 1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Shanghai Tunnel Engineering Co., Ltd., Shanghai 200082, China
  • Received:2011-05-16 Online:2012-09-11 Published:2012-09-12

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Abstract: The chamber pressure control is a key operation for controlling the impact of the earth pressure balance (EPB) shield excavation on the environment. Based on the monitored data, the water and earth pressure distribution properties in chamber and at the excavation face of a super-huge diameter EPB shield tunneling are studied. According to the construction parameters analysis, it is found that the increment of chamber pressure could be calculated by the construction parameters, such as rotation speed of screw conveyor and advancement rate. In addition, the water and earth pressure at excavation face could not be transfer to the chamber completely, and the transmissibility is about 76.3%. The research results of this paper provide valuable references for the setting method of the chamber pressure of the super-huge diameter EPB shield.

Key words: earth pressure balance shield, water and earth pressure at excavation face, chamber pressure

CLC Number: 

  • TU 447
[1] ZHU He-hua , XU Qian-wei , LIAO Shao-ming , YU Ning , FU De-ming , WU Xiang-song . Experimental study on thrust force during tunnel excavation with earth pressure balance shield machine [J]. , 2007, 28(8): 1587-1594.
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