[1]崔光耀,熊泳,王庆建.破碎板岩隧道两台阶带仰拱一次开挖工法特性研究[J].高速铁路技术,2023,14(01):7-12，19.[doi:10.12098/j.issn.1674-8247.2023.01.002]
CUI Guangyao,XIONG Yong,WANG Qingjian.Study on the Continuous Two-bench Excavation Method for Inverts of Tunnels in Broken Slate[J].HIGH SPEED RAILWAY TECHNOLOGY,2023,14(01):7-12，19.[doi:10.12098/j.issn.1674-8247.2023.01.002]
点击复制
破碎板岩隧道两台阶带仰拱一次开挖工法特性研究(
)
《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]
- 卷:
-
14卷
- 期数:
-
2023年01期
- 页码:
-
7-12，19
- 栏目:
-
- 出版日期:
-
2023-03-10
文章信息/Info
- Title:
-
Study on the Continuous Two-bench Excavation Method for Inverts of Tunnels in Broken Slate
- 文章编号:
-
1674-8247（2023）01-0007-06
- 作者:
-
崔光耀1; 熊泳1; 王庆建2
-
1.北方工业大学，北京100144;2.中铁隧道集团四处有限公司，南宁530000
- Author(s):
-
CUI Guangyao1; XIONG Yong1; WANG Qingjian1
-
1.North China University of Technology ，Beijing 100144 ，China;2.China Railway Tunnel Group ，Nanning 530000 ，China
-
- 关键词:
-
破碎板岩; 两台阶带仰拱一次开挖工法; 破坏特征; 数值模拟
- Keywords:
-
broken slate; continuous two-bench excavation method for inverts; failure characteristics; numerical sim-ulation
- 分类号:
-
U455.4
- DOI:
-
10.12098/j.issn.1674-8247.2023.01.002
- 文献标志码:
-
A
- 摘要:
-
为保证破碎板岩隧道施工的安全性及稳定性，本文以玉磨铁路立新隧道为研究背景，对破碎板岩隧道的破坏特征和工法特性进行了研究。结果表明：（1）破碎板岩隧道的破坏特征可分为应力重分布作用下的层理破坏、重力作用下的块体滑落、掉块导致的大范围塌方3个阶段；（2）两台阶带仰拱一次开挖工法较传统台阶法拱顶沉降最大值减小10.66％，仰拱隆起最大值减小8.22％；开挖阶段最大水平位移值减小7.92％；（3）两台阶带仰拱一次开挖工法下收敛值较传统台阶法有所减小，控制效果为12.22％；（4）在支护完成时，两台阶带仰拱一次开挖工法较传统台阶法最大主应力、最小主应力、最大剪切应力分别减小14.29％、13.33％、13.17％；（5）破碎板岩隧道中两台阶带仰拱一次开挖工法优于传统台阶法。研究成果可为破碎板岩隧道的安全施工提供参考。
- Abstract:
-
In order to ensure the safety and stability of the construction of the tunnels in broken slate，a case study of the Lixin Tunnel of Yuxi-Mohan Railway is made to study the failure characteristics and construction method characteristics for the tunnels in broken slate. The results show that：（1）The failure characteristics of tunnels in broken slate can be divided into three stages：bedding failure under stress redistribution，block sliding under gravity，and large-scale col-lapse caused by block falling.（2）Compared with the conventional benching method，the maximum settlement of the crown excavated with the continuous two-bench excavation method for inverts is reduced by 10. 66％，and the maximum uplift of the invert is reduced by 8. 22％，and the maximum horizontal displacement in the excavation stage is reduced by 7. 92％.（3）The convergence value of the continuous two-bench excavation method for inverts is reduced compared with the conventional benching method with a control effect of 12. 22％.（4）When the support is completed，the maximum principal stress，minimum principal stress，and maximum shear stress of the continuous two-bench excavation method for inverts are reduced by 14. 29％，13. 33％，and 13. 17％ respectively compared with those of the conventional bench-ing method.（5）The continuous two-bench excavation method for inverts is superior to the traditional bench cut method in tunnels of broken slate. The research results can provide a reference for the safe construction of tunnels in broken slates.
参考文献/References:
［1］涂瀚. 水平层状围岩隧道稳定性及破坏机理研究［J］. 铁道工程学报，2018，35（9）：75 - 79. TU Han. Research on the Stability and Failure Mechanism of Horizontal Layered Surrounding Rock Tunnel［J］. Journal of Railway Engineering Society，2018，35（9）： 75 - 79.
［2］左清军，吴友银，闫天玺. 特大断面板岩隧道施工期围岩变形时空效应分析［J］. 防灾减灾工程学报，2018，38（2）： 233 - 243. ZUO Qingjun，WU Youyin，YAN Tianxi. Analysis of Time-Space Effect for Surrounding Rock Deformation in Super-Large Cross Section Slate Tunnel during Construction Period［J］. Journal of Disaster Prevention and Mitigation Engineering，2018，38（2）：233 - 243.
［3］张卫霞. 板岩隧道顺层塌方分析及预防失稳措施研究［J］. 隧道建设（中英文），2017，37（S2）： 218 - 224. ZHANG Weixia. Study and Countermeasure for Collapse Instability of Tunnel in Slate［J］. Tunnel Construction，2017，37（S2）： 218 -224.
［4］骆建军，陈保忠，宋扬，等. 碳化泥质板岩大断面隧道围岩松动圈测试研究［J］. 地下空间与工程学报，2017，13（4）： 1047 -1055. LUO Jianjun，CHEN Baozhong，SONG Yang，et al. Expenimental Research on Surrounding Rock Loose Circle of Carbide Argillaceous Slate Large Cross Section Tunnel［J］. Chinese Journal of Underground Space and Engineering，2017，13（4）： 1047 - 1055.
［5］冯迎军. 碳质板岩隧道塌方处理方案探讨［J］. 现代隧道技术， 2014，51（2）： 178 - 181. FENG Yingjun. Discussion of the Treatment of Collapse in a Tunnel Passing through Carbonaceous Slate［J］. Modern Tunnelling Technology，2014，51（2）： 178 - 181.
［6］夏玉云，姚晨辉，周奎，等. 粉砂质板岩隧洞围岩变形破坏特征及稳定性研究［J］. 水利与建筑工程学报，2021，19（3）： 105 -
［7］于家武，郭新新. 木寨岭公路隧道复合型大变形控制技术与实践［J］. 隧道建设（中英文），2021，41（9）： 1565 - 1576. YU Jiawu，GUO Xinxin. Composite Large Deformation Control Techniques for Muzhailing Highway Tunnel［J］. Tunnel Construction，2021，41（9）： 1565 - 1576.
［8］王明胜. 强风化炭质板岩隧道大变形控制技术研究［J］. 铁道工程学报，2021，38（7）： 35 - 39. WANG Mingsheng. Research on the Large Deformation Control Technology of Strong Weathered Carbonaceous Slate Tunnel［J］. Journal of Railway Engineering Society，2021，38（7）： 35 - 39.
［9］郭相武，李彪，肖仲红. 基于缝合地带软岩隧道大变形机理研究［J］. 高速铁路技术，2020，11（2）： 99 - 105. GUO Xiangwu，LI Biao，XIAO Zhonghong. Study on Large Deformation Mechanism of Soft Rock Tunnel in Suture Zone［J］. High Speed Railway Technology，2020，11（2）： 99 - 105.
［10］钟扬，高超，张海太. 长时间停工条件下炭质板岩地层隧道围岩变形及支护结构补强研究［J］. 中外公路，2021，41（4）： 256 -260. ZHONG Yang，GAO Chao，ZHANG Haitai. Study on Deformation of Surrounding Rock and Reinforcement of Supporting Structure for Carbonaceous Slate Stratum Tunnels during Long-Term Cessation［J］. Journal of China ＆ Foreign Highway，2021，41（4）： 256 - 260.
备注/Memo
- 备注/Memo:
-
收稿日期：2022-04-14
作者简介：崔光耀（1983-），男，博士，教授。
基金项目：国家自然科学基金（52178378）；昆明铁路局科技项目重点课题（K17G43）
更新日期/Last Update:
2023-03-10