study oF Large deformation and support measures of Daliang tunnel with soft surrounding rockmass
DAI Yonghao1，CHEN Weizhong1，2，TIAN Hongming1，YANG Jianping1，MENG Xiangjun3，DENG Xiaolin3
(1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China；2. Geotechnical and Structural Engineering Research Center，Shandong University，Jinan，Shandong 250061，China；3. Dongtan Mine，Yanzhou Coal Mining Company Limited，Zoucheng，Shandong 273500，China)
Abstract：The in-situ displacement monitoring was carried out according to the geological characteristics of Daliang tunnel. The monitored result shows that tunnels deformation is charactered by high velocity，long period and large value. The maximum subsidence is 55 cm，the deformation rate run up to 1.69 cm per day. The rock masss elastic-plastic mechanics parameters are deduced by the generalized Hoek-Brown criterion based on the uniaxial and triaxial compression test result. With the rock mass considered as an elasto-plastic-rheological material which conforms to the empirical rheological model，the FEM inversion analysis was conducted based on the deformation monitored，and the rock masss rheology parameters could be got. The tunnels support design could be adjusted reasonably considering the displacement，the stress distribution and the damaged zone of the rock surrounding. According to the principle of new austrian tunnelling method，a new comprehensive support measures，which consists of enlargement of the deformation allowance，pre-grouting，bottom bolts installed，steel arch，system bolts and steel fabric installed，was adopted in Daliang tunnel which has poor rock surrounding and suffers large deformation during its excavation. It was confirmed by the fact that the tunnel was very safe after its construction.
戴永浩1，陈卫忠1，2，田洪铭1，杨建平1，孟祥军3，邓小林3. 大梁隧道软岩大变形及其支护方案研究[J]. 岩石力学与工程学报, 2015, 34(S2): 4149-4156.
DAI Yonghao1，CHEN Weizhong1，2，TIAN Hongming1，YANG Jianping1，MENG Xiangjun3，DENG Xiaolin3. study oF Large deformation and support measures of Daliang tunnel with soft surrounding rockmass. , 2015, 34(S2): 4149-4156.
刘 高，张帆宇，李新召，等. 木寨岭隧道大变形特征及机理分析[J]. 岩石力学与工程学报，2005，24(增2)：5 521-5 526.(LIUGao，ZHANGFanyu，LIXinzhao，et al. Research on large deformationand its mechanism of Muzhailing tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(Supp.2)：5 521-5 526.(in Chinese))
[2]
李鸿博，戴永浩，宋继宏，等. 峡口高地应力软岩隧道施工监测及支护对策研究[J]. 岩土力学，2011，32(增2)：496-501.(LI Hongbo，DAI Yonghao，SONG Jihong，et al. Construction monitoring and support design of Xiakou tunnel under high stress with soft rock surrounding[J]. Rock and Soil Mechanics，2011，32(Supp.2)：496-501.(in Chinese))
[3]
KARMEN F B，BORUTP. Displacement analysis of tunnel support in soft rock around a shallow highway tunnel at Golovec[J]. Engineering Geology，2004，75：89-106.
[4]
SERRANOA，OLALLAC，REIGI. Convergence of circular tunnels in elastoplastic rock massed with non-linear failure criteria and non- associated flow laws[J]. International Journal of Rock Mechanics and Mining Sciences，2011，48(6)：878-887.
[5]
LEANDRO R A，ALFONSO R，MARIA V. Plastic radii and longitudinal deformation profiles of tunnels excavated in strain-softening rock masses[J]. Tunnelling and Underground Space Technology，2012，30：169-182.
[6]
ZHAOX G，CAIM. Influence of plastic shear strain and confinement-dependent rock dilation on rock failure and displacement near an excavation boundary[J]. InternationalJournalof Rock MechanicsandMining Sciences，2010，47(5)：723-738.
[7]
何满潮，郭宏云，陈 新，等. 基于和分解有限变形力学理论的深部软岩巷道开挖大变形数值模拟分析[J]. 岩石力学与工程学报，2010，29(增2)：4 050-4 055.(HEManchao，GUOHongyun，CHEN Xin，et al. Numericalsimulation analysis of large deformation of deep soft rock engineering based on solar decomposition theorem[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.2)：4 050-4 055.(in Chinese))
[8]
YANGZ F，WANG Z Y，ZHANGL Q，et al. Back-analysis of viscoelastic displacement in a soft rock road tunnel[J]. International journal of rock mechanics and mining sciences，2001，38(3)：331-341.(in Chinese))
[9]
赵旭峰，王春苗，孔祥利. 深部软岩隧道施工性态时空效应分析[J]. 岩石力学与工程学报，2007，26(2)：404-409.(ZHAO Xufeng，WANG Chunmiao，KONG Xiangli. Analysis of time-spacer effects of construction behavior of deep soft rock tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(2)：404-409.(in Chinese))
[10]
何满潮，袁 越，王晓雷，等. 新疆中生代复合型软岩大变形控制技术及其应用[J]. 岩石力学与工程学报，2013，32(3)：433-441.(HEManchao，YUANYue，WANGXiaolei，et al. Control technology for large deformation of Mesozoiccompound soft rock in Xinjiang and its application[J].Chinese Journal of Rock Mechanics and Engineering，2013，32(3)：433-441.(in Chinese))
[11]
何满潮，景海河，孙晓明. 软岩工程地质力学研究进展[J]. 工程地质学报，2000，8(1)：46-62.(HEManchao，JINGHaihe，SUN Xiaoming. Research progress of soft engineeringgeomechanics in China coal mine[J]. Journal of Engineering Geology，2000，8(1)： 46-62.(in Chinese))
[12]
李晓红，李登新，靳晓光，等. 初期支护对软岩隧道围岩稳定性和位移影响分析[J]. 岩土力学，2005，26(8)：1 207-1 210.(LI Xiaohong，LI Dengxin，JIN Xiaoguang，et al. Discussion on influence of initial support to stability and deformation of surrounding rock mass in soft rock tunnel[J]. Rock and Soil Mechanics，2005，26(8)：1 207-1 210.(in Chinese))
[13]
刘志春，李文江，朱永全，等. 软岩大变形隧道二次衬砌施作时机探讨[J]. 岩石力学与工程学报，2008，27(3)：580-588.(LIU Zhichun，LI Wenjiang，ZHU Yongquan，etal. Research on construction time forsecondary lining in soft rock of large-deformation tunnel[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(3)：580-588.(in Chinese))
[14]
雷 军，张金柱，林传年. 乌鞘岭特长隧道复杂地质条件下断层带应力及变形现场监测分析[J]. 岩土力学，2008，29(5)：1367-1371.(LEI Jun，ZHANG Jinzhu，LIN Chuannian. Analysis of stress and deformation site-monitoring in fault zone of Wushaoling tunnel under complex geological conditions[J]. Rock and Soil Mechanics，2008，29(5)：1367-1371.(in Chinese))
[15]
SUNJ，WANGL G. Numerical simulation of grooving method for floor heave control in soft rock roadway[J]. Mining Science and Technology：China，2011，21：49-56.
[16]
HOEK E，CARRANZA-TORRES C. Hoek-Brown failure criterion- 2002 edition[C]// Proceedings of the 5th North American Rock Mechanics Symposium and 17th Tunneling Association of Canada Conference. Toronto：University of Toronto Press，2002：267-273.
[17]
贾善坡，陈卫忠，谭贤君，等. 大岗山水电站地下厂房区初始地应力场Nelder-Mead优化反演研究[J]. 岩土力学，2008，29(9)：2 341- 2 349.(JIA Shanpo，CHENWeizhong，TANXianjun，et al. Nelder-Mead algorithm for inversion analysis of in-situ stress field of underground powerhouse area of Dagangshan hydropower station[J]. Rock and Soil Mechanics，2008，29(9)：2 341-2 349.(in Chinese))
2015, Vol. 34 
