膏溶角砾岩隧道支护体系力学特性试验研究

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (361 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In-situ experiments of support system were carried out to investigate bolt axial force，surrounding rock pressure，steel framework stress and tunnel deformation of primary support，contact pressure and steel stress for lining. The results show that under condition of high water content gypsum breccia，the stress of primary support increases by 50 %，and the stress of lining increases by 30 % with respect to drying one. Particularly combined with drying gypsum breccia，bolts at hance were subjected to compression. Accordingly，it suggests that systematic bolts at arch should be cancelled；and only feet-lock bolt should be installed. This could reduce sealing time of primary support significantly. Nevertheless，in terms of high water content gypsum breccia，most of bolts at hance were subjected to tension. Therefore，bolt parameters should be unchanged. Framework of primary support can bear load and is of paramount to support system once it is installed. The results are not only applicable to deep tunnel in gypsum breccia stratum，but also can be as reference for similar engineering.

Key words： tunnelling engineering railway tunnel gypsum breccia support system mechanical characteristics field test

Received: 06 January 2012

	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/Y2012/V31/I5/945

[1] 关宝树. 隧道工程设计要点集[M]. 北京：人民交通出版社，2003：202–210.(GUAN Baoshu. Tunnel engineering design essentials sets[M]. Beijing：China Communications Press，2003：202–210.(in Chinese)) [2] 刘静德，李青云，龚壁卫. 南水北调中线膨胀岩膨胀特性研究[J]. 岩土工程学报，2011，33(5)：826–830.(LIU Jingde，LI Qingyun，GONG Biwei. Swelling properties of expansive rock in middle route project of South-to-North water diversion[J]. Chinese Journal of Geotechnical Engineering，2011，33(5)：826–830.(in Chinese)) [3] 陈翔，李尤嘉，黄醒春，等. 基于GIS三维统计的膏溶角砾岩断口几何特性研究[J]. 岩石力学与工程学报，2008，27(增2)：3 541– 3 546.(CHEN Xiang，LI Youjia，HUANG Xingchun，et al. Study on geometrical properties of fracture appearance in gypsum breccia based on 3D GIS statistics[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.2)：3 541–3 546.(in Chinese)) [4] 谢忠安. 太行山隧道膏溶角砾岩工程特性试验研究[J]. 工程地球物理学报，2007，4(6)：632–636.(XIE Zhongan. Test study on engineering characteristics of gypsum breccia in Taihang mountain tunnel[J]. Chinese Journal of Engineering Geophysics，2007，4(6)：632–636.(in Chinese)) [5] 庞山，宋玉香，朱永全. 太行山隧道膏溶角砾岩地段合理断面型式研究[J]. 石家庄铁道学院学报，2006，19(4)：48–51.(PANG Shan，SONG Yuxiang，ZHU Yongquan. Study on rational section of Taihang mountain tunnel in gypsum breccia region[J]. Journal of Shijiazhuang Railway Institute，2006，19(4)：48–51.(in Chinese)) [6] 王利伟，李文江，朱永全. 太行山隧道膏溶角砾岩地段施工监测与分析[J]. 石家庄铁道学院学报，2007，20(3)：10–14.(WANG Liwei，LI Wenjiang，ZHU Yongquan. Monitoring and analysis of construction in gypsum breccia region of Taihang mountain tunnel[J]. Journal of Shijiazhuang Railway Institute，2007，20(3)：10–14.(in Chinese)) [7] 赵勇，刘建友，田四明. 深埋隧道软弱围岩支护体系受力特征的试验研究[J]. 岩石力学与工程学报，2011，30(8)：1 663–1 670. (ZHAO Yong，LIU Jianyou，TIAN Siming. Experimental study of mechanical characteristics of support system for weak surrounding rock of deep tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(8)：1 663–1 670.(in Chinese)) [8] 李鹏飞，张顶立，赵勇，等. 大断面黄土隧道二次衬砌受力特性研究[J]. 岩石力学与工程学报，2010，29(8)：1 690–1 696.(LI Pengfei，ZHANG Dingli，ZHAO Yong，et al. Study of mechanical characteristics of secondary lining of large-section loess tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(8)：1 690–1 696.(in Chinese)) [9] GHORFI E L，GIAFFERI M. Problems posed to a Moroccan hydroelectric facility inlet tunnel by the presence of gypsum[J]. Tunnelling and Underground Space Technology，1991，6(3)：325–335. [10] LI S C，LI S C，ZHANG Q S，et al. Predicting geological hazards during tunnel construction[J]. Journal of Rock Mechanics and Geotechnical Engineering，2010，2(3)：232–242. [11] JEON S，KIM J，SEO Y，et al. Effect of a fault and weak plane on the stability of a tunnel[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(3)：1–6. [12] WU H，FANG Q，GUO Z K. Zonal disintegration phenomenon in rock mass surrounding deep tunnels[J]. Journal of China University of Mining and Technology，2008，18(2)：187–193. [13] CHEN X，GUO H Y，ZHAO P，et al. Numerical modeling of large deformation and nonlinear frictional contact of excavation boundary of deep soft rock tunnel[J]. Journal of Rock Mechanics and Geotechnical Engineering，2011，3(Supp.)：421–428. [14] 关宝树，赵勇. 软弱围岩隧道施工技术[M]. 北京：人民交通出版社，2011：169–170.(GUAN Baoshu，ZHAO Yong. Construction technique of tunnels with soft surrounding rocks[M]. Beijing：China Communications Press，2011：169–170.(in Chinese)) [15] 王明恕，何修仁，郑雨天. 全长锚固锚杆的力学模型及其应用[J]. 金属矿山，1983，(4)：24–29.(WANG Mingshu，HE Xiuren，ZHENG Yutian. The mechanics model and application of fully grouted rock bolt[J]. Metal Mine，1983，(4)：24–29.(in Chinese)) [16] 朱训国，杨庆. 全长注浆岩石锚杆中性点影响因素分析研究[J]. 岩土力学，2009，30(11)：3 382–3 386.(ZHU Xunguo，YANG Qing. Analyzing and studying factors for determining neutral point position of fully grouted rock bolt[J]. Rock and Soil Mechanics，2009，30(11)：3 382–3 386.(in Chinese)