下穿高速公路浅埋大跨度黄土隧道施工措施研究

›› 2011, Vol. 32 ›› Issue (9): 2803-2809.

下穿高速公路浅埋大跨度黄土隧道施工措施研究

李健¹，谭忠盛¹，喻渝²，倪鲁肃¹

1. 北京交通大学土建学院，北京 100044；2. 铁道第二勘测设计院，成都 610031

收稿日期:2010-05-31 出版日期:2011-09-10 发布日期:2011-09-13
作者简介:李健，男，1984年生，博士研究生，主要从事隧道及地下工程方面的研究工作
基金资助:
铁道部重大科技研发计划资助项目(No. 2005K001-D (G)-2)。

Research on construction procedure for shallow large-span tunnel undercrossing highway

LI Jian¹，TAN Zhong-sheng¹，YU Yu²，NI Lu-su¹

1. School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China; 2. The Second Survey and Design Institute of China Railway, Chengdu 610031, China

Received:2010-05-31 Online:2011-09-10 Published:2011-09-13

摘要/Abstract

摘要： 依托郑西客运专线阌乡隧道，开展浅埋大跨黄土隧道优化施工研究。对隧道进入下穿高速公路前的地表沉降，拱顶下沉及初支钢架应力进行现场监测，结果表明，土体沉降及初支应力不能得到有效控制，现有的施工方案无法满足下穿段施工安全要求，需要及时对其调整；经综合分析，提出了减小开挖面积、侧导多台阶开挖、预留核心土、快速封闭及加强初期支护等一系列优化措施，并采用数值计算软件FLAC3D验证其安全性和可靠性。通过现场实施及监测结果的反馈，证明优化措施效果明显，保障了阌乡隧道顺利下穿连霍高速公路。研究成果为类似施工中采取相应措施控制土体沉降、保护周边建筑设施的安全使用提供了依据

关键词: 浅埋暗挖, 下穿施工, 黄土隧道, 现场监测, 施工优化

Abstract: Wenxiang tunnel for Zheng-Xi Special Passenger Railway has been done a series of research on optimizing the construction method for shallow large-span loess tunnel. According to the field monitoring of ground settlement, vault settlement and primary support stress of the tunnel section before tunnel undercrossing the Lian-Huo expressway. The result indicates that soil settlement and primary support stress can not be controlled very well; and the current construction scheme needs to be reformed since it can not satisfy construction safety requirement. Through synthetical analysis, some optimized methods such as reducing excavation area, increasing excavation steps of pilot tunnel, reserving core soil, quick closure, reinforcing primary support, etc. have been used in construction; and their security and reliability are verified by numerical analysis software fast Lagrangian analysis of continua in 3 dimensions (FLAC3D). From feedback of field implement and monitoring result, the effect of optimized methods is significant; and these methods ensure the undercrossing project implements successfully. These research results have high referential value for analogous project to control soil settlement and protect the safety of neighbouring building facilities

Key words: shallow burying mining, undercrossing construction, loess tunnel, field monitoring, construction optimization

中图分类号:

U 456.3

李健，谭忠盛，喻渝，倪鲁肃. 下穿高速公路浅埋大跨度黄土隧道施工措施研究[J]. , 2011, 32(9): 2803-2809.

LI Jian ，TAN Zhong-sheng ，YU Yu ，NI Lu-su. Research on construction procedure for shallow large-span tunnel undercrossing highway[J]. , 2011, 32(9): 2803-2809.

参考文献

相关文章 15

[1]	章定文, 刘志祥, 沈国根, 鄂俊宇, . 超大直径浅埋盾构隧道土压力实测分析及其计算方法适用性评价[J]. 岩土力学, 2019, 40(S1): 91-98.
[2]	王道远, 袁金秀, 朱永全, 刘佳, 王洪凡, . 硬塑－流塑浅埋黄土隧道变形特性及合理预留变形量模型试验研究[J]. 岩土力学, 2019, 40(10): 3813-3822.
[3]	何海杰, 兰吉武, 高武, 陈云敏, 马鹏程, 肖电坤, . 压缩空气排水井在填埋场滑移控制中的应用及分析[J]. 岩土力学, 2019, 40(1): 343-350.
[4]	董志宏, 丁秀丽, 黄书岭, 邬爱清, 陈胜宏, 周钟, . 高地应力区大型洞室锚索时效受力特征及长期承载风险分析[J]. 岩土力学, 2019, 40(1): 351-362.
[5]	吴建涛, 叶霄, 李国维, 蒋超, 曹雪山, . 高路堤下PHC桩加固软土地基的承载及变形特性[J]. 岩土力学, 2018, 39(S2): 351-358.
[6]	陈晋龙，李锦辉，程鹏，宋磊，周腾. 植被作用下土质覆盖层渗透特性的现场试验[J]. , 2018, 39(1): 222-228.
[7]	许度，冯夏庭，李邵军，吴世勇，邱士利，周扬一，高要辉，. 基于三维激光扫描的锦屏地下实验室岩体变形破坏特征关键信息提取技术研究[J]. , 2017, 38(S1): 488-495.
[8]	庄海洋，张艳书，薛栩超，徐烨,. 深软场地地铁狭长深基坑变形特征实测与已有统计结果的对比分析[J]. , 2016, 37(S2): 561-570.
[9]	沈建文，刘力,. 盾构隧道施工对临近桥桩影响数值及现场监测研究[J]. , 2015, 36(S2): 709-714.
[10]	赖金星，牛方园，樊浩博，邱军领，王开运,. 浅埋黄土隧道三层支护结构力学特性现场测试[J]. , 2015, 36(6): 1769-1775.
[11]	沙鹏，伍法权，李响，梁宁，常金源，. 高地应力条件下层状地层隧道围岩挤压变形与支护受力特征[J]. , 2015, 36(5): 1407-1414.
[12]	李雪，周顺华，宫全美，陈长江, . 大断面深埋高水压地铁盾构隧道周边土压力作用模式评价[J]. , 2015, 36(5): 1415-1420.
[13]	徐鹏飞，李耀良，徐伟，. 压入式沉井施工对环境影响的现场监测研究[J]. , 2014, 35(4): 1084-1094.
[14]	何历超，王梦恕，李宇杰 , . 浅埋大跨小间距黄土隧道支护技术研究[J]. , 2013, 34(S2): 306-310.
[15]	王永红，齐文彪 . 铁矿软弱地层巷道快速安全施工关键技术研究 ——“浅埋暗挖”技术的应用新进展[J]. , 2013, 34(2): 417-425.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed