›› 2012, Vol. 33 ›› Issue (7): 2103-2109.

• Geotechnical Engineering • Previous Articles     Next Articles

Research on distribution of initial excess pore water pressure due to shield tunnelling

WEI Xin-jiang1, 2, CHEN Wei-jun1, 2, WEI Gang2, HONG Jie1   

  1. 1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China; 2. Department of Civil Engineering, Zhejiang University City College, Hangzhou 310015, China
  • Received:2011-04-11 Online:2012-07-11 Published:2012-07-13

PDF (Chinese)

2630

Abstract: Excess pore water pressure is generated during shield tunnelling, resulting in consolidation settlement. Assuming the disturbance range shape of shield tunnelling is circular arc, the distribution range of excess pore water pressure is determined. The formula of initial excess pore water pressure of soil around tunnel lining is deduced by stress relief theory; and the formula of initial excess pore water pressure of soil within the region of its distribution at any point is subsequently deduced by stress transfer theory. By comparing calculated and measured data, it is shown that they are in good agreement. Based on practical example, a conclusion is drawn that the distribution shape of initial excess pore water pressure of soil around shield tunnel circle is roughly circular (top of small, bottom of large). With the increase of distance from shield tunnel central axis, the initial excess pore water pressure of soil shows a concave curve shape. At the same time, the isopleths at the bottom of shield tunnel changes fastest. Above the top of the tunnel, the initial excess pore water pressure of soil gets the maximum at the tunnel axis in different depths, showing a similar Peck shape.

Key words: shield, initial excess pore water pressure, distribution range of initial pore water pressure, pore pressure isopleths

CLC Number: 

  • U 455
[1] YANG Zhen-xing, CHEN Jian, SUN Zhen-chuan, YOU Yong-feng, ZHOU Jian-jun, LÜ Qian-qian, . Experimental study on improved seawater slurry for slurry shield [J]. Rock and Soil Mechanics, 2020, 41(2): 501-508.
[2] WEI Gang, ZHANG Xin-hai, LIN Xin-bei, HUA Xin-xin, . Variations of transverse forces on nearby shield tunnel caused by foundation pits excavation [J]. Rock and Soil Mechanics, 2020, 41(2): 635-644.
[3] WANG Zhong-kai, XU Guang-li. Influence range and quantitative prediction of surface deformation during shield tunnelling and exiting stages [J]. Rock and Soil Mechanics, 2020, 41(1): 285-294.
[4] ZHANG Ding-wen, LIU Zhi-xiang, SHEN Guo-gen, E Jun-yu, . Measurement of earth pressure of shallow buried tunnel with super large diameter and applicability evaluation of calculation method [J]. Rock and Soil Mechanics, 2019, 40(S1): 91-98.
[5] ZHANG Zhi-guo, LI Sheng-nan, ZHANG Cheng-ping, WANG Zhi-wei, . Analysis of stratum deformation and lining response induced by shield construction considering influences of underground water level rise and fall [J]. Rock and Soil Mechanics, 2019, 40(S1): 281-296.
[6] ZHOU Dong, LIU Hang-long, ZHANG Wen-gang, DING Xuan-ming, YANG Chang-you, . Transparent soil model test on the displacement field of soil around single passive pile [J]. Rock and Soil Mechanics, 2019, 40(7): 2686-2694.
[7] HUANG Da-wei, ZHOU Shun-hua, FENG Qing-song, LUO Kun, LEI Xiao-yan, XU You-jun, . Analysis for vertical earth pressure transference on overlaying soils of shield tunnel under uniform surface surcharge [J]. Rock and Soil Mechanics, 2019, 40(6): 2213-2220.
[8] MO Zhen-ze, WANG Meng-shu, LI Hai-bo, QIAN Yong-jin, LUO Gen-dong, WANG Hui, . Laboratory investigation on pore water pressure variation caused by filter cake effect during slurry-EPB shield tunneling in silty sand layer [J]. Rock and Soil Mechanics, 2019, 40(6): 2257-2263.
[9] MENG Yu-han, CHEN Zheng, FENG Jian-xue, LI Hong-po, MEI Guo-xiong, . Optimization of one-dimensional foundation with sand blankets under the non-uniform distribution of initial excess pore water pressure [J]. Rock and Soil Mechanics, 2019, 40(12): 4793-4800.
[10] GENG Zhe, LI Shu-chen, ZHAO Shi-sen, ZHANG Jing-yu. Nonlinear dynamic analysis and application of thrust force for slurry balance shield [J]. , 2018, 39(S1): 469-476.
[11] GUO Fei, TAO Lian-jin, KONG Heng, MA Hong-hong, ZHANG Li-li, ZHANG Xin-quan,. Analysis of propagation and attenuation of vibration induced by shield tunneling in Lanzhou sandy gravel layer [J]. , 2018, 39(9): 3377-3384.
[12] LIU Quan-sheng, PENG Xing-xin, HUANG Xing, LEI Guang-feng, WEI Lai, LIU He,. Monitoring shield stress of tunnel boring machine and jamming warning [J]. , 2018, 39(9): 3406-3414.
[13] WANG Jun, WANG Chuang, HE Chuan, HU Xiong-yu, JIANG Ying-chao，. Heading stability analysis of EPB shield tunnel in sandy cobble ground using laboratory test and 3D DEM simulation [J]. , 2018, 39(8): 3038-3046.
[14] YAO Ai-jun, ZHANG Jian-tao, GUO Hai-feng, GUO Yan-fei. Influence of unloading-loading of foundation on shield tunnel underneath [J]. , 2018, 39(7): 2318-2326.
[15] ZHONG Yu, CHEN Jian, CHEN Guo-liang, WU Jia-ming, . Shield tunnel structure information modelling method based on building information modeling technology [J]. , 2018, 39(5): 1867-1876.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] TIAN Hu-nan，KONG Ling-wei. Experimental research on effect of fine grains on water retention capacity of silty sand[J]. , 2010, 31(1): 56 -60 .
[2] LI Wen-pei, WANG Ming-yang, FAN Peng-xian. Research on bearing capacity of tunnel surrounding rock based on discontinuous displacement field[J]. , 2010, 31(8): 2441 -2447 .
[3] ZHANG Ju-lian, SHEN Ming-rong. Sand liquefaction prediction based on stepwise discriminant analysis[J]. , 2010, 31(S1): 298 -302 .
[4] CHEN Yi-jun，LIU Chang-wu，XU Jin，ZHENG De-jian，KANG Ya-ming. Analysis of deformation stress feature and influential factors about road-dike on ramp in mountainous region expressway[J]. , 2009, 30(4): 1051 -1056 .
[5] XIE Yong-jian，WANG Huai-zhong，ZHU He-hua. Soil plugging effect of PHC pipe pile during driving into soft clay[J]. , 2009, 30(6): 1671 -1675 .
[6] ZHANG Wei-zhong, CHEN Cong-xin, YU Ming-yuan. Study of mechanical properties and constitutive relation of weathered sandstone[J]. , 2009, 30(S1): 33 -36 .
[7] XU Chao , CHEN Zhong-qing , YE Guan-bao , XIAO Yuan-yuan , DING Tian-rui. Experimental research on ground improvement of silt using impact roller compaction[J]. , 2011, 32(S2): 389 -392 .
[8] LIU De-ren , LAI Yuan-ming , DONG Yuan-hong , LI Shuang-yang. Experimental study of anti-frost-heave and frost boil effect of block-stone-interlayer embankment in permafrost regions[J]. , 2012, 33(3): 753 -756 .
[9] ZHU En-yang，YAO Yang-ping. Approximation of work calculation in theory of geotechnical plasticity[J]. , 2012, 33(4): 1075 -1078 .
[10] XU Hong-tao, LU Wen-bo . Study on dynamic unloading effect during process of fragmentizing rock by blasting[J]. , 2003, 24(6): 969 -973 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd