|Table of Contents|

Field experiment on large deformation control scheme of high stress soft rock tunnel(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2023年1期
Page:
133-142
Research Field:
隧道工程
Publishing date:

Info

Title:
Field experiment on large deformation control scheme of high stress soft rock tunnel
Author(s):
FU Zhi-peng1;  LI Bo-rong1;  XU Chen2;  HAN Chang-ling1
(1. CCCC First Highway Consultants Co., Ltd, Xi’an 710065, Shaanxi, China; 2. Institute of Rock Mechanics, Ningbo University, Ningbo 315211, Zhejiang, China)
Keywords:
tunnel engineering;  high stress;  soft rock tunnel;  large deformation;  field test;  double-layer initial support;  in-situ stress release
PACS:
U457
DOI:
10.19721/j.cnki.1671-8879.2023.01.014
Abstract:
In order to study the deformation and failure mechanism of soft surrounding rock in tunnels under high geostress conditions, two construction schemes, namely “double-layer H-shaped steel arch support” and “stress release & double-layer initial support” were proposed, based on a high ground stress soft rock tunnel project in Baohan(Baoji-Hanzhong)Expressway. The effects of the two support schemes were compared and through field tests to explore the control technology for soft rock tunnels with large deformation under high geostress conditions. The results show that the “double-layer H-shaped steel arch support” scheme is superior to the “stress release & double-layer initial support” scheme, the later has a large disturbance to the surrounding rock. If the surrounding rock is loose and broken, the “double-layer H-shaped steel arch frame” scheme is preferred, but under the conditions of extremely high ground stress, the “stress release & double-layer initial support” scheme is more appropriate. The double-layer initial support scheme can reduce the damage of surrounding rock. In addition, the reserved deformation shall be reasonably determined during the support construction, and it is better to exceed than to lack, so as to ensure the arch support effect.1 tab, 12 figs, 25 refs.

References:

[1] 张正一,王朝辉,张 廉,等.中国绿色公路建设与评估技术[J].长安大学学报(自然科学版),2018,38(5):76-86.
ZHANG Zheng-yi,WANG Chao-hui,ZHANG Lian,et al.China green highway construction and evaluation technology[J].Journal of Chang’an University(Natural Science Edition),2018,38(5):76-86.
[2]邹远华,张广泽,丁文富,等.成昆铁路保安营隧道大变形岩爆共生特征及成因分析[J].高速铁路技术,2021,12(3):28-32.
ZOU Yuan-hua,ZHANG Guang-ze,DING Wen-fu,et al.Symbiotic characteristics and genetic analysis of large deformation rockburst in Baoanying Tunnel of Chengdu Kunming Railway[J].High Speed Railway Technology,2021,12(3):28-32.
[3]周子寒,何 川,陈子全,等.基于分段单孔反演的隧址区多断层地应力分布特征[J].中国公路学报,2022,35(7):216-227.
ZHOU Zi-han,HE Chuan,CHEN Zi-quan,et al.Multi fault in-situ stress distribution characteristics of tunnel site based on piecewise single hole inversion[J].China Journal of Highway and Transpart,2022,35(7):216-227.
[4]邓祥辉,陈建勋,罗彦斌,等.水平层状围岩隧道爆破控制技术[J].长安大学学报(自然科学版),2017,37(2):73-80,88.
DENG Xiang-hui,CHEN Jian-xun,LUO Yan-bin,et al.Blasting control technology of horizontal stratified rock tunnel[J].Journal of Chang’an University(Natural Science Edition),2017,37(2):73-80,88.
[5]杜闯东,周路军,朵生君,等.川藏铁路隧道TBM适应性选型分析及不良地质对策与思考[J].隧道建设(中英文),2021,41(6):897-912.
DU Chuang-dong,ZHOU Lu-jun,DUO Sheng-jun,et al.Consideration of TBM adaptability and selection for Sichuan-Tibet Railway tunnels and countermeasures for unfavorable geologies[J].Tunnel Construction,2021,41(6):897-912.
[6]李 峰.高地应力构造破碎带隧道大变形灾变机制及控制技术研究[J].铁道科学与工程学报,2021,18(5):1222-1230.
LI Feng.Study on the formation mechanism and large deformation control of tunnel in structural fracture zone with high in situ stress[J].Journal of Railway Science and Engineering,2021,18(5):1222-1230.
[7]王夏夏.长锚杆锚索在隧道岭脊变形中的应用研究[J].低温建筑技术,2021,43(4):139-142,146.
WANG Xia-xia.The application of long anchor rope in tunnel ridge deformation was studied[J].Low Temperature Architecture Technology,2021,43(4):139-142,146.
[8]陈建勋,陈丽俊,罗彦斌,等.大跨度绿泥石片岩隧道大变形机理与控制方法[J].交通运输工程学报,2021,21(2):93-106.
CHEN Jian-xun,CHEN Li-jun,LUO Yan-bin,et al.Mechanism and control method of large deformation for large-span chlorite schist tunnel[J].Journal of Traffic and Transportation Engineering,2021,21(2):93-106.
[9]XU C,XIA C C,DU S G.Simplified solution for viscoelastic-plastic interaction between tunnel support and surrounding rock based on MC and GZZ strength criteria[J].Computers and Geotechnics,2021,139:104393.
[10]韩常领,张 天,徐 晨,等.大断面软岩隧道变形特征及多层初支控制研究[J].公路,2021,66(1):335-339.
HAN Chang-ling,ZHANG Tian,XU Chen,et al.Research on the deformation characteristics of soft rock tunnel with large section and the deformation control with multi-layer support[J].Highway,2021,66(1):335-339.
[11]张广泽,邓建辉,王 栋,等.隧道围岩构造软岩大变形发生机理及分级方法[J].工程科学与技术,2021,53(1):1-12.
ZHANG Guang-ze,DENG Jian-hui,WANG Dong,et al.Mechanism and classification of tectonic-induced large deformation of soft rock tunnels[J].Advanced Engineering Sciences,2021,53(1):1-12.
[12]刘宇鹏,夏才初,吴福宝,等.高地应力软岩隧道长、短锚杆联合支护技术研究[J].岩石力学与工程学报,2020,39(1):105-114.
LIU Yu-peng,XIA Cai-chu,WU Fu-bao,et al.A combined support technology of long and short bolts of soft rock tunnels under high ground stresses[J].Chinese Journal of Rock Mechanics and Engineering,2020,39(1):105-114.
[13]赵晨阳,雷明锋,周博成,等.大变形隧道初期支护变形特征与应对措施[J].铁道建筑,2020,60(12):61-65.
ZHAO Chen-yang,LEI Ming-feng,ZHOU Bo-cheng,et al.Deformation features and countermeasures of primary support for large deformation tunnel[J].Railway Engineering,2020,60(12):61-65.
[14]李国良,李 宁,丁彦杰.高地应力软岩大变形隧道防控关键技术研究[J].中国铁路,2020(12):69-73.
LI Guo-liang,LI Ning,DING Yan-jie.Research on key prevention and control technologies for large-deformation high geostress soft rock tunnel[J].China Railway,2020(12):69-73.
[15]郭小龙,谭忠盛,李 磊,等.高地应力千枚岩隧道二次衬砌施作时机研究[J].中国公路学报,2020,33(12):249-261.
GUO Xiao-long,TAN Zhong-sheng,LI Lei,et al.Study on the construction time of secondary lining in phyllite tunnel under high geo-stress[J].China Journal of Highway and Transport,2020,33(12):249-261.
[16]刘 喆.高地应力软岩大变形隧道支护结构设计研究[J].铁路工程技术与经济,2020,35(6):29-32.
LIU Zhe.Study on supporting structure design of tunnel with high ground stress induced large deformation in soft rock[J].Railway Engineering Technology and Economy,2020,35(6):29-32.
[17]王福善.木寨岭隧道极高地应力软岩大变形控制技术[J].隧道与地下工程灾害防治,2020,2(4):65-73.
WANG Fu-shan.The control technology of the large deformation in weak surrounding rock with extreme crustal stress for Muzhailing Tunnel[J].Hazard Control in Tunnelling and Underground Engineering,2020,2(4):65-73.
[18]朱麟晨.高地应力水平层状Ⅲ级围岩隧道支护结构变形控制措施研究与实践[J].现代隧道技术,2020,57(增1):1061-1069.
ZHU Lin-chen.Research and practice on deformation control measures for tunnel support structure under high geo-stress in horizontal layered surrounding rock of grade Ⅲ[J].Modern Tunnelling Technology,2020,57(S1):1061-1069.
[19]夏才初,金天垚,徐 晨,等.软岩隧道超前导洞应力释放力学机制及适用性[J].隧道建设(中英文),2020,40(增2):1-11.
XIA Cai-chu,JIN Tian-yao,XU Chen,et al.Mechanical mechanism and applicability of stress release for pilot heading in soft rock tunnel[J].Tunnel Construction,2020,40(S2):1-11.
[20]XU C,XIA C C.A new large strain approach for predicting tunnel deformation in strain-softening rock mass based on the generalized Zhang-Zhu strength criterion[J].International Journal of Rock Mechanics and Mining Sciences,2021,143:104786.
[21]张传军.高地应力软弱围岩隧道联合支护体系应用[J].公路工程,2020,45(4):48-52.
ZHANG Chuan-jun.Application of high geostress soft rock tunnel joint support system[J].Highway Engineering,2020,45(4):48-52.
[22]韩常领,夏才初,徐 晨.软岩隧道挤压性大变形控制技术研究进展[J].地下空间与工程学报,2020,16(增1):492-505.
HAN Chang-ling,XIA Cai-chu,XU Chen.Research progress for the control measures of the tunnel large deformation in squeezing rocks[J].Chinese Journal of Underground Space and Engineering,2020,16(S1):492-505.
[23]李志军,郭新新,马振旺,等.挤压大变形隧道研究现状及高强预应力一次(型)支护体系[J].隧道建设(中英文),2020,40(6):755-782.
LI Zhi-jun,GUO Xin-xin,MA Zhen-wang,et al.Research status and high-strength pre-stressed primary(type)support system for tunnels with large deformation under squeezing conditions[J].Tunnel Construction,2020,40(6):755-782.
[24]朱宝合,戴亦军,郑邦友,等.组合地质灾害作用下隧道开挖施工关键技术[J].公路,2019,64(12):317-321.
ZHU Bao-he,DAI Yi-jun,ZHENG Bang-you,et al.Key technology of tunnel excavation under combined geological hazards[J].Highway,2019,64(12):317-321.
[25]王英帆,刘 钦,胡永志,等.高地应力软岩隧道大变形监测及支护优化[J].科学技术与工程,2019,19(30):317-323.
WANG Ying-fan,LIU Qin,HU Yong-zhi,et al.Large deformation monitoring and support optimization of soft rock tunnel with high ground stress[J].Science Technology and Engineering,2019,19(30):317-323.

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Last Update: 2023-01-30