地表倾角对节理岩体隧道围岩塑性区影响研究  

The influence research on surface inclination angle to jointed rock tunnel surrounding rock plastic zone

作　　者：詹亮[1] 毕全超 赵岩[1] 高典[1] 

机构地区：[1]河北建筑工程学院,河北张家口075000

出　　处：《山西建筑》2017年第9期147-149,共3页Shanxi Architecture

基　　金：河北建筑工程学院研究生创新基金项目(编号:XB201610)

摘　　要：取浅埋偏压隧道作为研究对象,通过FLAC3D有限差分元软件,研究了地表倾角在0°,10°,20°,30°和40°五种工况下,对节理岩体隧道围岩塑性区的影响,结果表明:随着地表倾角的增大,隧道围岩塑性区的范围和围岩拱顶的沉降量也随之增大;当地表倾角小于30°时,围岩拱顶的沉降量与地表倾角之间成线性关系。This article chooses the shallow bias tunnel as the research object,through FLAC3 D finite difference software,studied the surface inclination at 0°,10°,20°,30°and 40°,the five conditions which influence plastic zone of the surrounding rock for joint rock tunnel. The results show that： the increasing of the surface angle,the increasing of surrounding rock plastic zone and the vault settlement of surrounding rock,when local table angle is less than 30°,the vault settlement of surrounding rock have a linear relationship with the surface inclination.

关 键 词：节理隧道 围岩 地表倾角 FLAC3D 

分 类 号：U451.2[建筑科学—桥梁与隧道工程]