摘要
文章以垫邻高速铜锣山隧道为工程背景,设计了高水压隧道衬砌水压力研究室内试验模型。通过改变围岩介质渗透性、注浆圈厚度和排水量大小,模拟了不同工况下衬砌背后水压力的变化规律,并首次基于伯努利方程研究发现:围岩介质渗透性越弱、注浆圈厚度越大、排水量越高,对水压力的折减效果越明显;水压力作用系数与隧道排水比呈近线性关系,其斜率主要取决于围岩渗透性及注浆圈设计参数。
Using the Tongluoshan tunnel on the Dianjiang-Linshui expressway as a background, an experimental laboratory model is designed for water pressure on tunnel linings with high water pressure. The variation laws of the water pressure behind a tunnel lining under different working conditions are simulated by changing the per- meability of the rock mass medium, the thickness of the grouting circle and the magnitude of water drainage. Based on the Bernoulli equation, it is determined that the reduction of water pressure is more pronounced with lower permeability of the rock mass, thicker grouting circle and greater drainage volume. There is a nearly linear relationship between the coefficient of water pressure and the tunnel drainage ratio, and its slope mainly depends on the rock mass permeability and the design parameters of the grouting circle.
出处
《现代隧道技术》
EI
CSCD
北大核心
2015年第6期99-105,共7页
Modern Tunnelling Technology
基金
铁道部科技研究开发计划重点课题(2010Z001-D)
关键词
隧道
水压力
渗流场
模拟
Tunnel
Water pressure
Seepage field
Simulation
