›› 2011, Vol. 32 ›› Issue (10): 2929-2936.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Model test study of mechanism of layered fracture within surrounding rock of tunnels in deep stratum tunnelling under dynamic disturbance

ZUO Yu-jun1, 2, MA Chun-de3, ZHU Wan-cheng4, LI Shu-cai5, GONG Feng-qiang3, CHEN Chun-chun6   

  1. 1. Mining School, Guizhou University, Guiyang 550003, China; 2. Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources, Guizhou University, Guiyang 550003, China; 3. School of Resources and Safety Engineering, Central South University, Changsha 410083, China; 4. Center for Rock Instability and Seismicity Research, Northeastern University, Shenyang 110004, China; 5. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, China; 6. Research Center for Numerical Test of Material Failure, Dalian University, Dalian, Liaoning 116622, China
  • Received:2011-04-27 Online:2011-10-10 Published:2011-10-13

PDF (Chinese)

2204

Abstract: In order to investigate the mechanism on zonal disintegration within rockmass around deep tunnel under static-dynamic coupling loading, by using the Instron electro-hydraulic and servo-controlled material testing machine, the test of deep tunnel on plaster model subjected to static-dynamic coupling loading is carried out. In order to further analyze the mechanical nature of layered fracture of surrounding rock around deep tunnel under static-dynamic coupling loading, surrounding rock around deep tunnel is regarded approximately as a combination of samples subjected to biaxial static-dynamic coupling loading; and the biaxial test of red sandstone subjected to static-dynamic coupling loading is performed. Experiments indicate that layered fracture of surrounding rock around deep tunnel may occur when the axial stress of tunnel is the maximum principal stress and more than a certain value. Layered fracture of surrounding rock around deep tunnel may also occur when the axial stress of tunnel is the maximum principal stress and the superposition value of axial stress and external disturbance stress is more than a certain value. Larger tunnel diameter may make layered fracture of surrounding rock around deep tunnel occur more easily under the same static-dynamic coupling loading. The larger superposition value of axial stress and external disturbance stress may make more layered fracture of surrounding rock around deep tunnel occur under the same tunnel diameter. The failure mode of statically loaded sample under periodic dynamic load changes according to different static stress states; and fracture surface of sample is generally perpendicular to the minor principal stress direction (in plane of minor principal stress) and tends to agree with the maximum principal stress direction. There is the foregoing stress state in surrounding rock around deep tunnel triggering layered fracture, and then leading to zonal disintegration within rockmass around deep tunnel under static-dynamic coupling loading.

Key words: static-dynamic coupling loading, deep tunnel, zonal disintegration, model test

CLC Number: 

  • TU 452
[1] WANG Guo-hui, CHEN Wen-hua, NIE Qing-ke, CHEN Jun-hong, FAN Hui-hong, ZHANG Chuan, . Impacts of pit excavation on foundation piles in deep silty soil by centrifugal model tests [J]. Rock and Soil Mechanics, 2020, 41(2): 399-407.
[2] YU Yi-fan, WANG Ping, WANG Hui-juan, XU Shu-ya, GUO Hai-tao, . Physical model test of seismic dynamic response to accumulative landslide [J]. Rock and Soil Mechanics, 2019, 40(S1): 172-180.
[3] LEI Hua-yang, HU Yao, LEI Shuang-hua, QI Zi-yang, XU Ying-gang, . Analysis of microstructure characteristics of air-booster vacuum preloading for ultra-soft dredger fills [J]. Rock and Soil Mechanics, 2019, 40(S1): 32-40.
[4] CHEN Yu-long, UCHIMURA Taro, . Early warning of rainfall-induced landslides based on elastic wave velocity [J]. Rock and Soil Mechanics, 2019, 40(9): 3373-3386.
[5] WANG Qin-ke, MA Jian-lin, CHEN Wen-long, YANG Yan-xin, HU Zhong-bo, . Centrifugal model tests and calculation method of uplift bearing capacity of rock-socketed pedestal pile overburden soil [J]. Rock and Soil Mechanics, 2019, 40(9): 3405-3415.
[6] LU Liang, SHI Tong-hui, YANG Dong, . Control effect of uneven settlement of subgrade by composited method of replacement load shedding and reinforced embankment [J]. Rock and Soil Mechanics, 2019, 40(9): 3474-3482.
[7] CAI Yu, XU Lin-rong, ZHOU De-quan, DENG Chao, FENG Chen-xi, . Model test research on method of self-balance and traditional static load [J]. Rock and Soil Mechanics, 2019, 40(8): 3011-3018.
[8] SUN Fei, ZHANG Zhi-qiang, YI Zhi-wei. Model experimental study of the influence of normal fault with stick-slip dislocation on subway tunnel structure [J]. Rock and Soil Mechanics, 2019, 40(8): 3037-3044.
[9] ZHOU Dong, LIU Hang-long, ZHANG Wen-gang, DING Xuan-ming, YANG Chang-you, . Transparent soil model test on the displacement field of soil around single passive pile [J]. Rock and Soil Mechanics, 2019, 40(7): 2686-2694.
[10] ZHAO Xiao-yan, FAN Yu-fei, LIU Liang, JIANG Chu-sheng, . Model test on potential failure surface characteristics of railway stepped reinforced soil retaining wall [J]. Rock and Soil Mechanics, 2019, 40(6): 2108-2118.
[11] CHU Zhao-fei, LIU Bao-guo, REN Da-rui, SONG Yu, MA Qiang, . Development of rheology similar material of soft rock and its application in model test [J]. Rock and Soil Mechanics, 2019, 40(6): 2172-2182.
[12] WU Guan-ye, ZHENG Hui-feng, XU Jian-rong. Model test study of stability and failure mechanism of three-dimensional complicated block system slope with deeply reinforcement [J]. Rock and Soil Mechanics, 2019, 40(6): 2369-2378.
[13] LI Shu-zhao, WANG Zhong-chang, JIA Xu, HE Lin-lin, . Simplified calculation method for cyclic bearing capacity of suction anchors with taut mooring in soft clay [J]. Rock and Soil Mechanics, 2019, 40(5): 1704-1712.
[14] ZHOU Xiao-wen, CHENG Li, ZHOU Mi, WANG Qi, . Behavior of ball penetration in clay in centrifuge testing [J]. Rock and Soil Mechanics, 2019, 40(5): 1713-1720.
[15] RUI Rui, YE Yu-qiu, CHEN Cheng, TU Shu-jie. Nonlinear distribution of active earth pressure on retaining wall considering wall-soil friction [J]. Rock and Soil Mechanics, 2019, 40(5): 1797-1804.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] ZHANG Wen-jie，CHEN Yum-min. Pumping tests and leachate drawdown design in a municipal solid waste landfill[J]. , 2010, 31(1): 211 -215 .
[2] GONG Wei-li, AN Li-qian, ZHAO Hai-yan, MAO Ling-tao. Multiple scale characterization of CT image for coal rock fractures based on image description[J]. , 2010, 31(2): 371 -376 .
[3] WAN Zhi, DONG Hui, LIU Bao-chen. On choice of hyper-parameters of support vector machines for time series regression and prediction with orthogonal design[J]. , 2010, 31(2): 503 -508 .
[4] WANG Ming-nian, GUO Jun, LUO Lu-sen, Yu Yu, Yang Jian-min, Tan Zhon. Study of critical buried depth of large cross-section loess tunnel for high speed railway[J]. , 2010, 31(4): 1157 -1162 .
[5] HU Yong-gang, LUO Qiang, ZHANG Liang, HUANG Jing, CHEN Ya-mei. Deformation characteristics analysis of slope soft soil foundation treatment with mixed-in-place pile by centrifugal model tests[J]. , 2010, 31(7): 2207 -2213 .
[6] TAN Feng-yi, Jiang Zhi-quan, Li Zhong-qiu, YAN Hui-he. Application of additive mass method to testing compacted density of filling material in Kunming new airport[J]. , 2010, 31(7): 2214 -2218 .
[7] CHAI Bo, YIN Kun-long, XIAO Yong-jun. Characteristics of weak-soft zones of Three Gorges Reservoir shoreline slope in new Badong county[J]. , 2010, 31(8): 2501 -2506 .
[8] YANG Zhao-liang, SUN Guan-hua, ZHENG Hong. Global method for stability analysis of slopes based on Pan’s maximum principle[J]. , 2011, 32(2): 559 -563 .
[9] WANG Guang-jin，YANG Chun-he ，ZHANG Chao，MA Hong-ling，KONG Xiang-yun ，HO. Research on particle size grading and slope stability analysis of super-high dumping site[J]. , 2011, 32(3): 905 -913 .
[10] HU Hai-jun, JIANG Ming-jing, ZHAO Tao, PENG Jian-bing, LI Hong. Effects of specimen-preparing methods on tensile strength of remolded loess[J]. , 2009, 30(S2): 196 -199 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd