Analysis of reasonable thrust force during tunnel excavation in homogeneous soft ground by use of earth pressure balance shield machine

XU Qianwei; ZHU Hehua; LIAO Shaoming; ZHENG Qizhen; ZHOU Kui

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Volume 30 Issue 1

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Chinese Journal of Geotechnical Engineering > 2008 > 30(1): 79-85.

XU Qianwei, ZHU Hehua, LIAO Shaoming, ZHENG Qizhen, ZHOU Kui. Analysis of reasonable thrust force during tunnel excavation in homogeneous soft ground by use of earth pressure balance shield machine[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(1): 79-85.

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Analysis of reasonable thrust force during tunnel excavation in homogeneous soft ground by use of earth pressure balance shield machine

1.Department of Civil Engineering University of Shanghai for Science and Technology Shanghai 200093 China 2.School of Naval Architecture and Civil Engineering Shanghai Jiaotong University Shanghai 200030 China 3.Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education P.R.China Tongji University Shanghai 200092 China

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Published Date: January 14, 2008

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Abstract

Abstract

The reasonable calculation method of thrust force and its influencing factors were studied by applying mathematics and mechanics based on the working mechanism of EPB shield machine.Model experiments on thrust force during tunnel excavation with EPB shield machine under different conditions of burying depth,cutter opening rate and soil property were carried out.The aforementioned theoretical results were also verified.Combining with a subway tunneling case,the derived formula was used to forecast the values of thrust force in the course of shield tunneling,and satisfactory results were achieved.
- earth pressure balance,
- shield machine,
- thrust force,model test,
- geotechnical engineering