摘要
为了研究层状节理对隧道围岩变形规律的影响,采用颗粒流软件PFC2D,建立了含层状节理的隧道模型,分析了层状节理倾角、间距、分布位置对隧道围岩变形的影响。结果表明:层状节理倾角为45°时,隧道围岩变形量最小,节理间距小于1.2m及节理分布在拱顶时,对隧道围岩变形的影响更加显著。验证了颗粒流软件PFC2D在节理隧道研究中的可行性,得出了层状节理特征的影响规律。
To study the influence of layered joints on the deformation law of tunnel surrounding rock,a tunnel model with layered joints is established by using particle flow software PFC2 D,and the influence of inclination angle,spacing and distribution position of layered joints on the deformation of tunnel surrounding rock is analyzed.The results show that when the inclination angle of layered joints is 45°,the deformation of surrounding rock is the smallest,the spacing of joints is less than 1.2 m and the joints are distributed on the vault,the influence on the deformation of surrounding rock is more significant.The feasibility of particle flow software PFC2 Din the study of tunnel joints is verified,and the influence rule of the joint characteristics is obtained.
作者
田兴朝
刘远明
马智理
杨家曌
TIAN Xingchao;LIU Yuanming;MA Zhili;YANG Jiazhao(School of Civil Engineering,Guizhou University,Guiyang 550025,China)
出处
《煤矿安全》
CAS
北大核心
2019年第10期235-238,共4页
Safety in Coal Mines
基金
国家自然科学基金资助项目（11562005）
贵州大学引进人才科研基金资助项目（200745）
贵州大学研究生创新基金资助项目（研理工2016012）
关键词
隧道
层状节理
节理倾角
节理间距
围岩变形
tunnel
layered joint
dip angle of joint
joint spacing
surrounding rock deformation
