›› 2013, Vol. 34 ›› Issue (10): 2905-2910.

• Geotechnical Engineering • Previous Articles     Next Articles

Analysis and evaluation of sealing effect of rock-socketed underground diaphragm in deep foundation pit

XU Yang-qing1, LIU Guo-feng1, SHENG Yong-qing2   

  1. 1.Wuhan Design and Research Institute of China Coal Technology & Engineering Group, Wuhan 430064, China; 2. Wuhan Metro Group Co., Ltd., Wuhan 430030, China
  • Received:2012-10-31 Online:2013-10-09 Published:2013-10-18

PDF (Chinese)

2057

Abstract: When dewatering in deep foundation pit, the uncertainty of the leakage point location, size, and so on in the rock-socketed underground diaphragm in deep foundation pit cause the numerical simulation and prediction of the groundwater flow field very difficult to handle. Based on the analysis of the sealing effect of the rock-socketed underground diaphragm in Xunlimen station of Wuhan subway line No. 2, a method of longitudinal translation and put together is used to deal with the leak point in diaphragm while numerical simulation calculating. The results through 3D numerical simulation by this method are very close to the results obtained from actual measurement, it shows the possibility of using the method to deal with the problems of simulation and prediction of change process of the groundwater flow field in the case of dewatering in the rock-socketed underground diaphragm while it exists leakage point; it provides an approach to solve the problem. In the meantime, the actual sealing effect of the rock-socketed underground diaphragm is analyzed and discussed. The analytical procedure discussed for the project instance can be used for reference to the similar engineerings.

Key words: deep foundation pit, rock-socketed underground diaphragm, leak, method of longitudinal translation and put together, suspended diaphragm

CLC Number: 

  • TU 46+3
[1] WANG Gang, WEI Lin-yi, WEI Xing, ZHANG Jian-min. Permeability evolution of compacted clay during triaxial compression [J]. Rock and Soil Mechanics, 2020, 41(1): 32-38.
[2] CHEN Xiang-sheng, LI Yin-ping, SHI Xi-lin, YE Liang-liang, YANG Chun-he, . Analysis of leakage risks and prevention measures of underground salt cavern gas storage [J]. Rock and Soil Mechanics, 2019, 40(S1): 367-373.
[3] ZHANG Zhi-guo, HUANG Mao-song, YANG Xuan, . Analytical solution for dissipation of excess pore water pressure and soil consolidation settlement induced by tunneling under the influence of long-term leakage [J]. Rock and Soil Mechanics, 2019, 40(8): 3135-3144.
[4] GAO Cheng-lu, LI Shu-cai, LIN Chun-jin, LI Li-ping, ZHOU Zong-qing, LIU Cong, SUN Shang-qu, . Development and application of model test system for water leakage disease in tunnel lining [J]. Rock and Soil Mechanics, 2019, 40(4): 1614-1622.
[5] LI Lian-xiang, LIU Jia-dian, LI Ke-jin, HUANG Heng-li, JI Xiang-kai, . Study of parameters selection and applicability of HSS model in typical stratum of Jinan [J]. Rock and Soil Mechanics, 2019, 40(10): 4021-4029.
[6] CHEN Cheng, ZHAN Liang-tong, XU Wen-jie, CHEN Yun-min, . Leakage evaluation method based on the statistical law of the geometric parameters of wrinkles [J]. Rock and Soil Mechanics, 2018, 39(12): 4588-4596.
[7] CHEN Cheng, ZHAN Liang-tong, XU Wen-jie, CHEN Yun-min, . Hydraulic connectivity analysis of wrinkle network for geomembrane as composite liner [J]. , 2018, 39(10): 3685-3694.
[8] CHEN Xiang-sheng, LI Yin-ping, YIN Hong-wu, GE Xin-bo, SHI Xi-lin, YANG Chun-he, . Gas leakage assessment method of underground gas storage in multi-interlayer salt mine [J]. , 2018, 39(1): 11-20.
[9] XIE Jian, WEI Ning, WU Li-zhou, ZHANG Ke-ni, XU Mo, . Progress in leakage study of geological CO2 storage [J]. , 2017, 38(S1): 181-188.
[10] HUANG Chao-xuan, WANG Zheng-zhong, FANG Yong-lai,. Analytical solution of vacuum preloading foundation considering air leakage and nonlinear well resistance [J]. , 2017, 38(9): 2574-2582.
[11] ZHANG Hua-lei, TU Min, CHENG Hua, WEN Zhi-jie，TANG Yong-zhi,. Roof leakage mechanism and control technology study of fully mechanized large mining height mining face of thin bedrock seams [J]. , 2017, 38(6): 1697-1704.
[12] ZHANG Dong-mei, RAN Long-zhou, YAN Jing-ya, YANG Tian-liang，. Effect of grouting on tunnel leakage-induced pore pressure change in saturated soft soils [J]. , 2017, 38(12): 3427-3435.
[13] ZENG Chao-feng, XUE Xiu-li, ZHENG Gang,. Effect of soil permeability on wall deflection during pre-excavation dewatering in soft ground [J]. , 2017, 38(10): 3039-3047.
[14] ZHUANG Hai-yang, ZHANG Yan-shu, XUE Xu-chao, XU Ye,. Deformation characteristics of narrow-long deep foundation pit for subway station in soft ground and compared with existing statistical results [J]. , 2016, 37(S2): 561-570.
[15] LI Qi，SHI Hui，YANG Duo-xing，. Classification of hazard levels of carbon dioxide dispersion under a well blowout in a CCS project [J]. , 2016, 37(7): 2070-2078.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WANG Gang, LI Shu-cai, WANG Ming-bin. Study of stability of anchoring jointed rockmass under seepage pressure[J]. , 2009, 30(9): 2843 -2849 .
[2] LIU Yu-cheng，CAO Shu-gang，LIU Yan-bao. Discussion on some time functions for describing dynamic course of surface subsidence due to mining[J]. , 2010, 31(3): 925 -931 .
[3] LIU En-long. Breakage mechanics for geomaterials: Breakage mechanism of structural blocks and binary-medium model[J]. , 2010, 31(S1): 13 -22 .
[4] JIE Yu-xin, YANG Guang-hua. Modification of elastoplastic models based on generalized potential theory[J]. , 2010, 31(S2): 38 -42 .
[5] YANG Jian-min, ZHENG Gang. Classification of seepage failures and opinion to formula for check bursting instability in dewatering[J]. , 2009, 30(1): 261 -264 .
[6] ZHOU Hua，WANG Guo-jin1,，FU Shao-jun，ZOU Li-chun，CHEN Sheng-hong. Finite element analysis of foundation unloading and relaxation effects of Xiaowan Arch Dam[J]. , 2009, 30(4): 1175 -1180 .
[7] YE Fei, ZHU He-hua, HE Chuan. Back-filled grouts diffusion model and its pressure to segments of shield tunnel[J]. , 2009, 30(5): 1307 -1312 .
[8] LUO Qiang , WANG Zhong-tao , LUAN Mao-tian , YANG Yun-ming , CHEN Pei-zhen. Factors analysis of non-coaxial constitutive model’s application to numerical analysis of foundation bearing capacity[J]. , 2011, 32(S1): 732 -0737 .
[9] WANG Yun-Gang ，ZHANG Guang ，HU Qi. Study of force characteristics of battered pile foundation[J]. , 2011, 32(7): 2184 -2190 .
[10] GONG Wei-ming, HUANG Ting, DAI Guo-liang. Experimental study of key parameters of high piled foundation for offshore wind turbine[J]. , 2011, 32(S2): 115 -121 .
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