高地应力软岩隧道中型钢与格栅支护适应性现场对比试验研究

doi:10.13722/j.cnki.jrme.2014.11.010

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (1002 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The different effects of applying the steel frame and the steel grid frame in high geostress region were investigated during the construction of Daliang tunnel in LXS–7 of Lanzhou—Xinjiang double line Railway. The experimental sections applying the section steel and the steel grid are 20 meters in length each. Numerical simulations were carried out. The settlement of the tunnel crown and the arch foot，the horizontal convergence，the surrounding rock pressure and the stress of initial supporting steel framework were compared through experiments and numerical simulation. The section with the steel frame had the settlement and the horizontal convergence controlled more effectively than the one with the steel grid. But the contact pressure of surrounding rock and steel reached 336 kPa，much higher than the cases of the section with steel grid support. In the section of steel grid，the settlement of tunnel crown reached 350 mm after a week，with the rapid displacement increasing. To control the deformation of the surrounding rock，multiple support including the steel grid and the steel frame were set up. The settlement of tunnel crown reached a stable value of 446 mm and the surrounding rock pressure reached 190 kPa. The deformation of surrounding rocks and the stress of initial supporting steel frameworks were finally effectively controlled，so as to indicate that the multiple support is an effective measure of controlling the large deformation of surrounding rocks.

Key words： tunnelling engineering weak surrounding rocks high geostress section steel frame steel grid frame comparative test numerical simulation

Received: 18 December 2013

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.11.010 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I11/2258

[1] ORESTE P P，PEILA D. Modelling progressive hardening of shotcrete in convergence-confinement approach to tunnel design[J]. Tunnelling and Underground Space Technology，1997，12(3)：425–431. [2] 王梦恕. 中国隧道及地下工程修建技术[M]. 北京：人民交通出版社，2010：5.(WANG Mengshu. Tunnelling and underground engineering technology in China[M]. Beijing：China Communications Press，2010：5.(in Chinese)) [3] 曲海锋，朱合华. 隧道初期支护的钢拱架与钢格栅选择研究[J]. 地下空间与工程学报，2007，3(2)：258–262.(QU Haifeng，ZHU Hehua. Study on selection of section-steel and grid-steel in primary support system of tunnel[J]. Chinese Journal of Underground Space and Engineering，2007，3(2)：258–262.(in Chinese)) [4] 夏松林，吕学武. 钢格栅喷混凝土支护下的软岩控制效果分析[J]. 山西建筑，2007，33(22)：129–130.(XIA Songlin，LU Xuewu. Analysis on control effects of soft rock with support method of shotcrete on steel grid[J]. Shanxi Architecture，2007，33(22)：129–130.(in Chinese)) [5] 王建宇. 高地应力软弱围岩隧道挤压型变形和可让性支护原理[J].现代隧道技术，2012，49(3)：9–17.(WANG Jianyu. Tunneling in squeezing ground with yielding supports[J]. Modern Tunnelling Technology，2012，49(3)：9–17.(in Chinese)) [6] 张继奎，方俊波. 高地应力千枚岩大变形隧道支护参数试验研究[J].铁道工程学报，2005，89(5)：66–70.(ZHANG Jikui，FANG Junbo. Experiment research on support parameters of large strain phyllite tunnel under high stress[J]. Journal of Railway Enginerring Society，2005，89(5)：66–70.(in Chinese)) [7] 刘招伟，王明胜，方俊波. 高地应力大变形隧道支护系统的试验研究[J]. 土木工程学报，2010，43(5)：111–116.(LIU Zhaowei，WANG Mingsheng，FANG Junbo. In-situ study of reinforcement systems for tunnels under high geo-stress and large deformation[J]. China Civil Engineering Journal，2010，43(5)：111–116.(in Chinese)) [8] 方新秋，何杰，何加省. 深部高地应力软岩动压巷道加固技术研究[J]. 岩土力学，2009，30(6)：1 693–1 698.(FANG Xinqiu，HE Jie，HE Jiasheng. Research on reinforced technology for deep soft rock and dynamicpressurized roadway under high stress[J]. Rock and Soil Mechanics，2009，30(6)：1 693–1 698.(in Chinese)) [9] KIMURA F，OKABAYASHI N，KAWAMOTO T. Tunneling through squeezing rock in two large fault zones of the Enasan tunnel II[J]. Rock Mechanics and Rock Engineering，1987，20(3)：151–166. [10] 张祉道. 家竹箐隧道施工中支护大变形的整治[J]. 世界隧道，1997，(1)：7–16.(ZHANG Zhidao. Regulation of support large deformation for Jiazhuqing tunnel in construction[J]. Modern Tunneling Technology，1997，(1)：7–16.(in Chinese)) [11] 刘志春，李文江，孙明磊，等. 乌鞘岭隧道F4断层区段监控量测综合分析[J]. 岩石力学与工程学报，2006，25(7)：1 502–1 511.(LIU Zhichun，LI Wenjiang，SUN Minglei，et al. Monitoring and comprehensive analysis in F4 section of Wuqiaoling tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(7)：1 502–1 511.(in Chinese)) [12] 项志敏. 乌鞘岭特长隧道F7断层挤压大变形控制技术[博士学位论文][D]. 成都：西南交通大学，2006.(XIANG Zhimin. Study of control technology for large deformation of extruded rock at fault 7 in Wuqiaoling tunnel[Ph. D. Thesis][D]. Chengdu：Southwest Jiaotong University，2006.(in Chinese)) [13] 王中文，方建勤，夏才初，等. 考虑围岩蠕变特性的隧道二衬合理支护时机确定方法[J]. 岩石力学与工程学报，2010，29(增1)：3 241–3 246. (WANG Zhongwen，FANG Jianqin，XIA Caichu，et al. Determination method of supporting time for secondary lining in tunnel considering rock creep behaviors[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.1)：3 241–3 246.(in Chinese)) [14] 田洪铭，陈卫忠，谭贤君. 高地应力软岩隧道合理支护方案研究[J]. 岩石力学与工程学报，2011，30(11)：2 285–2 292.(TIAN Hongming，CHEN Weizhong，TAN Xianjun. Study of reasonable support Scheme for soft rock tunnel in high geostress zone[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(11)：2 285–2 292.(in Chinese)) [15] 尤春安. U 型钢可压缩支架缩动后的稳定性分析[J]. 岩石力学与工程学报，2002，21(11)：1 672–1 675.(YOU Chun?an. Stability analysis of U-steel yieldable support[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(11)：1 672–1 675.(in Chinese)) [16] 陈卫忠，戴永浩，田洪铭，等. 兰新铁路第二双线甘青段大梁隧道高地应力测试及围岩变形研究报告[R]. 武汉：中国科学院武汉岩土力学研究所，2012.(CHENG Weizhong，DAI Yonghao，TIAN Hongming，et al. High geo-stress test and surrounding rock deformation research report of Lanxin railway second double Gansu—Qinghai section Daliang tunnel[R]. Wuhan：Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，2012.(in Chinese))