某铁路隧道底部结构隆起病害成因分析及治理对策探讨

doi:10.3973/j.issn.1672-741X.2014.09.003

隧道建设（中英文） ›› 2014, Vol. 34 ›› Issue (9): 823-836.DOI: 10.3973/j.issn.1672-741X.2014.09.003

某铁路隧道底部结构隆起病害成因分析及治理对策探讨

王立川^1，2，肖小文²，林辉^2

(1. 成都铁路局，四川成都 610082； 2. 中南大学土木工程学院，湖南长沙 410075)

收稿日期:2014-04-08 修回日期:2014-07-15 出版日期:2014-09-20 发布日期:2014-09-22
作者简介:王立川（1965—），男，河南孟州人，2011年毕业于中南大学，桥梁与隧道工程专业，博士，教授级高级工程师，现任成都铁路局副总工程师。长期从事铁路、轨道交通、公路、水利等行业的隧道与地下工程施工、病害(缺陷)整治、地质灾害防治、施工管理、建设管理、设计和施工咨询工作，致力于浅埋、偏压、大跨、强透水地层、淤泥质软土等地下工程的结构和施工技术研究。
基金资助:
国家科技支撑项目(2012BAG05B00)

Analysis on Causes for and Renovation of Floor Structure of a Highspeed Railway Tunnel Located in slightlydipping Interbedded Rock Mass

WANG Lichuan^{1, 2}, XIAO Xiaowen², LIN Hui²

(1. Chengdu Railway Bureau, Chengdu 610082, Sichuan, China; 2. School of Civil Engineering, Central South University, Changsha 410075, Hunan, China)

Received:2014-04-08 Revised:2014-07-15 Online:2014-09-20 Published:2014-09-22

摘要/Abstract

摘要：

西南地区YD隧道长约7 850 m，设计时速200 km，系双块式无砟轨道；建成通车后，K108+600～K109+350等区段底部结构出现不同程度的隆起，引起无砟轨道板开裂、破坏，致使轨道几何尺寸处于不稳定状态，影响列车正常运营。该隧道病害段穿越地层为薄至中厚中风化泥岩、砂岩缓倾互层围岩体，地应力测试表明该段存在与隧道轴线近似垂直的水平高地应力。通过采用现场调查测试、理论分析和数值计算等手段，分析总结认为该隧道底部结构隆起的主要成因是： 1）以水平构造应力为主导的极高地应力作用于隧底下伏薄至中厚缓倾互层围岩体； 2）仰拱参数不满足工程所处的地质环境。在锚索加固治理方案实施后，YD隧道的底部结构隆起依然没有稳定，在分析其原因、经验、教训的基础上提出治理及今后遇到类似工程的方向性建议： 1）在缓倾互层围岩体环境中且埋深50～300 m的隧道工程中，应特别重视底部结构的针对性设计，恰当选择仰拱的矢跨比和刚度； 2）锚索必然的松动、滑移特征决定了其不能作为隧底结构隆起病害整治的单独和主要技术手段，以低预应力锚杆锚固、至少是“刚柔相济”的方式应被重视。

关键词: 铁路隧道, 缓倾互层围岩体, 水平地应力, 底部结构隆起, 病害成因, 治理

Abstract:

Y. D. Tunnel, designed with a speed of 200 km and doubleblock ballastless track, in Southwest China is about 7.85 km in length. Varying degrees of heaving appeared in the floor structure of the tunnel within the region of K107+970～K109+270 after it was put into service. Cracks and failure developed in the ballastless tracks, resulting in track geometry changing in an unstable state. The railway operation was seriously influenced. The tunnel was located in lowmedium thick interbedded strata of mediumweathered mudstone and sandstone. The insitu stress was measured, indicating that there existed high horizontal stress nearly perpendicular to the tunnel axis. In the paper, the causes for the heaving of the floor structure of the tunnel are analyzed by means of field survey and measurement, theoretical analysis and numerical simulation. It is concluded that the causes for the heaving of the floor structure are as follows: 1) Superhigh ground stress, mainly taking the form of horizontal structural stress, acts on the slightlydipping interbedded lowmedium thick rock mass underlying the tunnel floor; 2) The parameters of the invert cannot meet the requirements of the geological conditions. The following countermeasures are proposed for the treatment of the floor heaving: 1) For tunnels located in slightlydipping interbedded rock mass and under 50 m～300 m cover, special attention should be paid to the specific design of the floor and appropriate rise span ratio and rigidity should be selected for the tunnel invert; 2) Due to the loosening and sliding features of the anchor cables, the anchor cables cannot be taken as the only or major technological measures to control the heaving of the tunnel floor; on the other hand, rock bolting, at least “rigid control measures + flexible control measures” should be taken to control the heaving of the tunnel floor.

Key words: railway tunnel, slightlydipping interbedded rock mass, horizontal ground stress, floor structure heaving, disease causes, treatment

中图分类号:

U 457+.2

王立川，肖小文，林辉. 某铁路隧道底部结构隆起病害成因分析及治理对策探讨[J]. 隧道建设, 2014, 34(9): 823-836.

WANG Lichuan, XIAO Xiaowen, LIN Hui. Analysis on Causes for and Renovation of Floor Structure of a Highspeed Railway Tunnel Located in slightlydipping Interbedded Rock Mass[J]. Tunnel Construction, 2014, 34(9): 823-836.

[1]	李亚博, 李荆. L型接头混凝土衬砌模板台车设计[J]. 隧道建设, 2020, 40(6): 898-904.
[2]	杨家松 . 单线铁路隧道新微台阶带仰拱一次爆破开挖施工技术研究[J]. 隧道建设, 2020, 40(1): 83-89.
[3]	金明, 王明慧, 朱建国, 刘大琳, 张桥 . 铁路隧道使用凿岩台车与风钻钻爆的比较研究[J]. 隧道建设, 2020, 40(1): 99-105.
[4]	刘斌, 吕宏权. 铁路隧道运营维护中钢垫梁稳定性监测方法探究[J]. 隧道建设, 2019, 39(S2): 406-412.
[5]	陈建国. 格库铁路依吞布拉克1号隧道风积沙段超前预加固方案比选研究[J]. 隧道建设, 2019, 39(S1): 377-384.
[6]	林春刚，李荆，王百泉，尚伟，谢韬 . 模架一体化新型衬砌台车设计及应用技术研究[J]. 隧道建设, 2019, 39(S1): 433-437.
[7]	马辉，吴剑，高明忠，王海云. 基于气动效应的特长隧道断面优化探讨[J]. 隧道建设, 2019, 39(9): 1412-1422.
[8]	杨涅，刘大刚，王明年，于丽. 基于变形-结构法的隧道初期支护安全性评价研究[J]. 隧道建设, 2019, 39(9): 1445-1452.
[9]	赵东平，蒋尧，李老三，杨柏洪. 郑万高铁隧道口紧急救援站防灾通风方案及参数敏感性研究[J]. 隧道建设, 2019, 39(7): 1097-1103.
[10]	史宪明，吴剑，万晓燕，陈洋宏. 基于车内瞬变压力变化的400 km/h高速铁路隧道净空面积探讨[J]. 隧道建设, 2019, 39(7): 1118-1124.
[11]	谢成涛，赵海雷. 高黎贡山铁路隧道彩云号TBM的创新性设计与应用[J]. 隧道建设, 2019, 39(7): 1201-1208.
[12]	刘同江，唐钢，王军，孙亚飞. 黔张常铁路高山隧道巨型溶洞处理技术研究[J]. 隧道建设, 2019, 39(6): 972-982.
[13]	侯国强. 成兰铁路茂县隧道大变形特征及施工技术[J]. 隧道建设, 2019, 39(5): 868-875.
[14]	刘飞香. 铁路隧道智能化建造装备技术创新与施工协同管理展望[J]. 隧道建设, 2019, 39(4): 545-555.
[15]	王华. 隧道洞口雪崩防治方案探讨[J]. 隧道建设, 2019, 39(4): 642-650.

某铁路隧道底部结构隆起病害成因分析及治理对策探讨

Analysis on Causes for and Renovation of Floor Structure of a Highspeed Railway Tunnel Located in slightlydipping Interbedded Rock Mass

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价