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山东大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (2): 61-71.doi: 10.6040/j.issn.1672-3961.0.2017.563

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哈尔滨地铁粉质黏土力学性质与超前支护方式

李崴,王者超*,李术才,丁万涛,王琦,宗智,刘克奇   

  1. 山东大学岩土与结构工程研究中心, 山东 济南 250061
  • 收稿日期:2017-11-07 出版日期:2018-04-20 发布日期:2017-11-07
  • 通讯作者: 王者超(1980— ),男,山东高唐人,教授,博导,主要研究方向为土力学和裂隙介质渗流力学. E-mail: wang_zhechao@hotmail.com E-mail:liwai_lw@163.com
  • 作者简介:李崴(1992— ),男,安徽桐城人,硕士研究生,主要研究方向为土力学和裂隙介质渗流力学. E-mail: liwai_lw@163.com
  • 基金资助:
    国家自然科学基金资助项目(51579141,5151101078);西南交通大学交通隧道工程教育部重点实验室开放基金资助项目(TTE2014-02)

The mechanical properties of the silty clay and the advanced support method in Harbin Metro

LI Wei, WANG Zhechao*, LI Shucai, DING Wantao, WANG Qi, ZONG Zhi, LIU Keqi   

  1. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, Shandong, China
  • Received:2017-11-07 Online:2018-04-20 Published:2017-11-07

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摘要： 依托哈尔滨地铁项目,进行不同含水率情况下的粉质黏土的力学性质和超前支护方式选择研究。通过对哈尔滨地铁土样进行室内性质试验,包括含水率试验、土三轴试验等,确定哈尔滨地铁土样为粉质黏土及得到了不同含水率试样的力学性质,并通过液性指数对哈尔滨地铁隧道围岩进行亚级级别划分;介绍哈尔滨地铁现场监测的情况,包括现场位移与应力监测,并将监测数据与数值模拟结果进行对比,确定了数值模拟的正确性;进行不同地层参数与不同超前支护情况下的数值模拟,通过对比不同情况下的位移、应力、应力路径以及塑性区大小,得到不同等级围岩情况下的隧道超前支护方式的选择。本研究对于哈尔滨地铁隧道超前支护方式的选择具有一定的指导意义。

关键词: 稳定性, 围岩亚级, 应力路径, 含水率, 变形, 粉质黏土, 超前支护

Abstract: Based on the Harbin Metro project, the mechanical properties of the silty clay and the selection of the advanced support method were studied with different water content. Through the laboratory tests, including water content test and triaxial test, the type of soil samples from Harbin Metro tunnel was identified as the silty clay and the mechanical properties of soil samples with different water content were determined, and the silty clay of Harbin Metro tunnel was sub-classified according to liquid index. Field monitoring was performed to calibrate the water content-dependent deformation and strength parameters used in the numerical simulations, and the correctness of numerical simulation was confirmed. Numerical simulation was performed with different soil parameters and different support method, and the selections of the tunnel advanced support method with different parameters were obtained by comparing the displacement, stress, stress path and the area of the plastic zone under different conditions. The obtained results could give some help for the selection of the advanced support method of Harbin metro tunnel.

Key words: stress path, stability, advanced support, silty clay, water content, surrounding rock sub-classification, deformation

中图分类号: 

  • U495.3
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