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Volume 33 Issue zk1
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LI Shou-ju, CHEN Yu-zhen, CAO Li-juan, SHANGGUAN Zi-chang. Mechanism model of pressure control of headchamber in earth-pressure- balanced shield tunneling[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 34-38.
Citation: LI Shou-ju, CHEN Yu-zhen, CAO Li-juan, SHANGGUAN Zi-chang. Mechanism model of pressure control of headchamber in earth-pressure- balanced shield tunneling[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 34-38.
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Mechanism model of pressure control of headchamber in earth-pressure- balanced shield tunneling

  • 1. State Key Laboratory of Structural Analysis of Industrial Equipment, Dalian University of Technology, Dalian 116024 China; 2. Institute of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China; 3. Institute of Mechanical Engineering, Dalian Ocean University, Dalian116024, China; 4. Institute of Civil Engineering, Dalian Ocean University, Dalian 116024, China

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  • Received Date: April 26, 2011
  • Published Date: November 30, 2011
    Graphical Abstract
    • Abstract
  • The mechanical equilibrium problem in shield tunneling is analytically analyzed. The equilibrium equation between thrust force of shield machine and tunneling resistance is proposed. Taking account of the coupled reaction between shield machine and soils, a new mechanism model for controlling the earth pressure acting on the headchamber is presented. The optimal procure is developed for controlling the earth pressure acting on the headchamber. The numerical simulation shows that the controlling time will take about 20 s while the rotation speed of screw conveyor is singly adjusted, and the controlling time will take about 10 s while the rotation speed of screw conveyor and thrust force are simultaneously adjusted. The effectiveness and preciseness of the proposed model are verified by numerical results.
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    • References (13)
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