Notice：
News: Another formal entry in international databases! 2023-02-08 Good news! Journal of Mining Science and Technology is included by Scopus database! 2022-03-22
Volume 2 Issue 4
. 
Turn off MathJax
Article Contents
Article Navigation >  Journal of Mining Science and Technology  > 2017  >  2(4): 348-356
Guo Dongming, Liu Kang, Luo Lang, Yang Jun, Wang Hao, Xiao Zhengxin. Growth mechanism of original crack facing the blasting side of adjacent tunnel under the blasting load[J]. Journal of Mining Science and Technology, 2017, 2(4): 348-356.
Citation: Guo Dongming, Liu Kang, Luo Lang, Yang Jun, Wang Hao, Xiao Zhengxin. Growth mechanism of original crack facing the blasting side of adjacent tunnel under the blasting load[J]. Journal of Mining Science and Technology, 2017, 2(4): 348-356.
shu

Growth mechanism of original crack facing the blasting side of adjacent tunnel under the blasting load

  • 1.

    School of Mechanics and Civil Engineering,China University of Mining and Technology,Beijing 100083,China;2.State Key Laboratory for GeoMechanics and Deep Underground Engineering,Beijing 100083,China

  • Received Date: 2016-11-02
  • Publish Date: 2017-07-25
    Abstract
  • The method of dynamic caustics is adopted to investigate the mechanism of original crack existing in the surrounding rock of adjacent tunnel under the action of blasting load.Conclusions are drawn as follows.Under the action of blasting load,dynamic fraction toughness of pre-crack is not related to the dip angle of pre-crack and the free surface of tunnel.However,the existence of free surface makes pre-crack initiation in advance.In general,the propagation path of pre-crack facing the blasting side of adjacent tunnel under the action of blasting load is related to the propagation path of principal crack from the blast-hole,the free surface of tunnel as well as its section form.Initial propagation path presents approximate vertical upward because of the action of tension wave reflected by the free surface of tunnel.The middle and later periods of pre-crack propagation,the propagation path of principal crack and the stress distribution characteristics of free surface have great effect on the propagation path of pre-crack.The stress distribution characteristics of surrounding rock facing the blasting side are analyzed through the LS-DYNA.From the base angle of side wall to vault facing the blasting side of tunnel,effective stress presents the variation rule of decreasing-increasing-decreasing,of which the maximum points lie to the base angle and the location between sprung arch and vault,the minimum point lie to the side wall.As a result,the pre-crack propagation path is partial to the arch parts and arrest at certain location between the sprung arch and vault.
    • FullText(HTML)
  • loading
    • References(26)
  • [1]
    Shin J H,Moon H Q,Chae S E.Effect of blast-induced vibration on existing tunnels in soft rocks[J].Tunneling and Underground Space Technology,2011,26(1):51-61.
    [2]
    Liang Qingguo,Li Jie,Li Dewu,et al.Effect of blast-induced vibration from new railway tunnel on existing adjacent railway tunnel in Xinjiang,China[J].Rock Mechanics and Rock Engineering,2013,46(1):19-39.
    [3]
    Xia X,Li H B,Li J C,et al.A case study on rock damage prediction and control method for underground tunnels subjected to adjacent excavation blasting[J].Tunneling and Underground Space Technology,2013,35(4):1-7.
    [4]
    Zhu Zheming,Mohanty Bibhu,Xie Heping.Numerical investigation of blasting-induced crack initiation and propagation in rocks[J].International Journal of Rock Mechanics and Mining Sciences,2007,44(3):412-424.
    [5]
    Arakawa K,Mada T,Takahashi K.Correlations among dynamic stress intensity factor,crack velocity and acceleration in brittle fracture[J].International Journal of Fracture,2000,105(4):311-320.
    [6]
    Isaksson P,Stahle P.A directional crack path criterion for crack growth in ductile materials subjected to shear and compressive loading under plane strain conditions[J].International Journal of Solids and Structures,2003,40(13/14):3523-3536.
    [7]
    Isaksson P,Stahle P.Prediction of shear crack growth direction under compressive loading and plane strain conditions[J].International Journal of Fracture,2002,113(2):175-194.
    [8]
    彭祝.整个应力场对裂纹失稳扩展轨迹的影响[J].实验力学,1994,9(2):107-114.
    [9]
    Peng Zhu.Influence of whole stress field on the unstable crack path[J].Journal of Experimental Mechanics,1994,9(2):107-114.
    [10]
    岳中文,杨仁树.爆炸载荷下裂纹扩展方向预测的研究[J].实验力学,2010,25(4):408-414.
    [11]
    Yue Zhongwen,Yang Renshu.Study of propagation direction prediction under loading[J].Journal of Experimental Mechanics,2010,25(4):408-414.
    [12]
    Sajjadi S H,Ostad Ahmad Ghorabi M J,Salimi Majd D.A novel mixed mode brittle fracture criterion for crack growth path prediction under static and fatigue loading[J].Fatigue and Fracture Engineering Materials and Structures,2015,38(11):1372-1382.
    [13]
    Sajjadi S H,Salimi Majd D,Ostad Ahmad Ghorabi M J.Development of a brittle fracture criterion for prediction of crack propagation path under general mixed mode loading[J].Engineering Fracture Mechanics,2016,155:36-48.
    [14]
    朱有利,侯帅,王燕礼,等.基于最大能量释放率原理的裂纹扩展算法的改进[J].机械工程学报,2016,52(10):91-96.
    [15]
    Zhu Youli,Hou Shuai,Wang Yanli,et al.Improvements of the crack extension algorithm based on the maximum energy release rate criterion[J].Journal of Mechanical Engineering,2016,52(10):91-96.
    [16]
    姚学锋,方竞,熊春阳.爆炸应力波作用下裂纹与孔洞的动态焦散线分析[J].爆炸与冲击,1998,18(3):232-236.
    [17]
    Yao Xuefeng,Fang Jing,Xiong Chunyang.Dynamic caustics analysis of cracks and holes subjected to explosion stress wave[J].Explosion and Shock Waves,1998,18(3):231-236.
    [18]
    李清,杨仁树,李均雷,等.爆炸荷载作用下动态裂纹扩展试验研究[J].岩石力学与工程学报,2005,24(16):1913-2916.
    [19]
    Li Qing,Yang Renshu,Li Junlei,et al.Dynamic crack propagation test research with the explosion load[J].Journal of Rock Mechanics and Engineering,2005,24 (16):1912-2916.
    [20]
    杨立云,杨仁树,许鹏.新型数字激光动态焦散线实验系统及其应用[J].中国矿业大学学报,2013,42(2):188-194.
    [21]
    Yang Liyun,Yang Renshu,Xu Peng.Caustics method combined with laser and digital high-speed camera and its applications[J].Journal of China University of Mining & Technology,2013,42(2):188-194.
    [22]
    Papadopoulos G A.Dynamic caustics and its applications[J].Optics and Lasers in Engineering,1990,13(3):211-249.
    [23]
    Yang Renshu,Wang Yanbing,Guo Dongming,et al.Experimental research of crack propagation in polymethyl methacrylate material containing flaws under explosive stress waves[J].Journal of Testing and Evaluation,2016,44(1):248-257.
    [24]
    郭东明,袁保森,刘康,等.爆炸荷载对不同距离邻近隧洞背爆侧裂纹影响的模拟试验[J].实验力学,2016,31(3):369-376.
    [25]
    Guo Dongming,Yuan Baosen,Liu Kang,et al.Simulation experiment of blast load impact on the crack at the back side of adjacent tunnel with different spacings[J].Journal of Experiment Mechanics,2016,31(3):369-376.
    [26]
    Hopkinson B.The effects of the detonation of gun-cotton[J].North-East Coast Institution of Engineers and Shipbuilders,1914,30:199-217.
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Get Citation
    PDF
    XML

    Article Metrics

    Article views (795) PDF downloads(142) Cited by()
    Proportional views

    Beijing ICP backup 05066826

    Address： Office Building 3, China University of Mining and Technology (Beijing), No. 11, Xueyuan Road, Haidian District, Beijing

    Tel： 010-62339662, 010-62339897, 010-62339528Email： kykxxb@cumtb.edu.cn

    Supported by: Beijing Renhe Information Technology Co. Ltd  

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return