摘要
以新建吉林至珲春铁路水南隧道为依托,采用三维有限元数值模拟方法,研究开挖引起围岩渗流场分布规律、衬砌结构受力特征以及合理注浆圈参数。从防水效果、经济性以及施工工艺角度出发,建议注浆圈渗透系数为围岩渗透系数的1/50时较为合理。
Taking Nanshui Tunnel on Jilin-Huichun High-speed Passenger Railway as an example, three dimensional finite- element simulations were carried out to investigate the distribution law of seepage field, mechanical characteristics of lining and reasonable grouting circle parameters induced by excavation. From the viewpoint of waterproofing effect, cost and construction, it was suggested that the reasonable permeability coefficient of grouting circle is 1/50 time of the surrounding rock.
出处
《中国建筑防水》
2015年第12期37-40,共4页
China Building Waterproofing
关键词
水压隧道
渗流场
注浆圈
水荷载
参数优化
hydraulic tunnel
seepage field
grouting circle
water load
parameter optimization
