[1]邹金杰,赵宇,李姣阳,等.黏土浅埋隧道开挖面稳定性模型试验研究[J].西安建筑科技大学学报(自然科学版),2017,(04):478-484.[doi:10.15986/j.1006-7930.2017.04.003]
 ZOU Jinjie,ZHAO Yu,LI Jiaoyang,et al.Model test study of the face stability of the shallow tunnel in the clay[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2017,(04):478-484.[doi:10.15986/j.1006-7930.2017.04.003]
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黏土浅埋隧道开挖面稳定性模型试验研究()
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西安建筑科技大学学报(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2017年04期
页码:
478-484
栏目:
出版日期:
2017-09-10

文章信息/Info

Title:
Model test study of the face stability of the shallow tunnel in the clay
文章编号:
1006-7930(2017)04-0478-07
作者:
邹金杰1赵宇2李姣阳34甘鹏路41闫自海1刘维5
(1. 中国电建集团 华东勘测设计研究院,浙江 杭州 311122 ; 2 . 浙江大学 防灾工程研究所,浙江 杭州 310058 ; 3. 中铁第四勘察设计院集团有限公司,湖北 武汉 430063 ;4. 浙江大学 滨海和城市岩土工程研究中心,浙江 杭州 310058 ; 5. 苏州大学 城市轨道交通学院,江苏 苏州 215131)
Author(s):
ZOU Jinjie1 ZHAO Yu2 LI Jiaoyang34 GAN Penglu41 YAN Zihai1 LIU Wei5
(1. Power China Huadong Engineering Corporation, Hangzhou 311122, China; 2. Institute of Disaster Prevention Engineering, Zhejiang University, Hangzhou 310058, China; 3. China Railway No .4 Survey and Design Group Co., Ltd., Wuhan 430063, China; 4. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China; 5. School of Urban Rail Transportation, Soochow University, Suzhou 215131, China)
关键词:
开挖面失稳模型试验地表沉降管棚加固土体变形
Keywords:
excavation face instability model test surface settlement pipe -shed reinforcement soil deformation
分类号:
TU 41
DOI:
10.15986/j.1006-7930.2017.04.003
文献标志码:
A
摘要:
为研究不同加固条件下黏土隧道开挖面失稳发展过程及地表变形规律,采用轴对称半隧道模型,进行了无加固、管棚加固和“管棚+水泥土”加固条件下的三组试验,研究了开挖面支护力、地表沉降规律和开挖面失稳发展过程.研究发现,管棚加固后的土样地表沉降明显减小,而水泥土加固对地表沉降的减小作用有限.随着支护板位移增大,支护力出现快速下降阶段、稳定阶段和丧失阶段.开挖面失稳过程中,土体变形出现主要变形区域、次要变形区域和变形延伸区域.管棚加固或“管棚+水泥土”加固能延缓变形向地表发展,“管棚+水泥土”加固还能降低开挖面附近土体变形大小和范围以及支护力的大小
Abstract:
In order to study the development of the tunnel face instability in the clay under different conditions of reinforcements, by using of symmetry, half of the tunnel model was introduced to conduct three tests for no reinforcement, pipe -shed reinforcement and “pipe-shed + cemented soil” reinforcement. Support pressure on the excavation face, ground deformation and the instability mode of the tunnel face were investigated . It was found that the surface settlement decreased remarkably after the pipe -shed reinforcement, while the effect of the cemented soil reinforcement on the reduction of the settlement was limited. With the increase in the face displacement, the support pressure appeared three stages i .e. the rapid decline stage, steady stage and disappearing stage . During the process of the tunnel face instability, the soil deformation appeared three regions, i .e. the main deformation areas, secondary deformation areas and the extended areas . The pipe -shed reinforcement or “pipe-shed + cemented soil” reinforcement can delay the development of soil deformation toward the surface, and the latter can also reduce the value and scope of the soil deformation near the excavation face and the support pressure of the excavation face

参考文献/References:

References

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备注/Memo

备注/Memo:
收稿日期:2016-10-11修改稿日期:2017-07-15
基金项目:国家自然科学基金青年基金(51508503);浙江省自然科学基金(LY16D020002);华东勘测设计研究院科技项目(KY2013-02-30)
第一作者:邹金杰(1980-),男,高级工程师,主要从事隧道及地下工程的研究.E-mail:zou_jj@ecidi.com
通讯作者:赵宇(1981-),男,副教授,硕士生导师,主要从事地质灾害防治的研究.E-mail:zhao_yu@zju.edu.cn
更新日期/Last Update: 2017-09-11