山岭隧道地下水渗流及加固参数的解析研究

华南理工大学学报(自然科学版) ›› 2012, Vol. 40 ›› Issue (2): 112-117,123.

山岭隧道地下水渗流及加固参数的解析研究

刘福胜徐国元黄文通

华南理工大学土木与交通学院，广东广州 510640

收稿日期:2011-08-05 修回日期:2011-10-12 出版日期:2012-02-25 发布日期:2012-01-04
通信作者: 刘福胜(1981-) ，男，博士生，主要从事隧道工程与渗流研究． E-mail:lfs_1981@126.com
作者简介:刘福胜(1981-) ，男，博士生，主要从事隧道工程与渗流研究．
基金资助:
国家自然科学基金资助项目( 51078151)

Analytical Research on Groundwater Seepage and Reinforcement Parameters of Mountain Tunnels

Liu Fu-sheng Xu Guo-yuan Huang Wen-tong

School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China

Received:2011-08-05 Revised:2011-10-12 Online:2012-02-25 Published:2012-01-04
Contact: 刘福胜(1981-) ，男，博士生，主要从事隧道工程与渗流研究． E-mail:lfs_1981@126.com
About author:刘福胜(1981-) ，男，博士生，主要从事隧道工程与渗流研究．
Supported by:
国家自然科学基金资助项目( 51078151)

摘要/Abstract

摘要： 为研究山岭隧道渗流压力、渗流量以及加固参数对渗流的影响，假定圆形隧道周围存在各向同性的径向稳定渗流场，推导了地下水渗透压力分布规律及渗流量公式．实例分析表明，渗透压力的分布具有非线性特征，在排水情况下设置围岩加固圈和初期支护可明显减少作用在衬砌上的渗透压力及地下水排放量．运用文中公式计算的毛洞渗流量比较接近相关资料提供的实际涌水量，说明文中方法对预测类似隧道涌水量具有一定的参考价值．另外，由加固参数与水压力及渗流量的相关性分析可知，随着加固圈渗透系数的减小及厚度的增加，二次衬砌上的渗流压力和渗流量一开始急剧减小，当加固参数达到一定界限值时，地下水渗流压力及渗流量基本保持不变．

关键词: 圆形隧道, 渗透压力, 渗流量, 加固参数

Abstract:

In order to investigate the seepage pressure and discharge of mountain tunnels and reveal the effect of grouting reinforcement parameters on groundwater seepage,the distribution law of seepage pressure and the formulas of seepage discharge are deduced based on the assumption that there exists a radial stable and isotropic seepage around a circular tunnel. Then,a case study is performed. It is found that the distribution of the seepage pressure is nonlinear and that the reinforcement rim and the primary support greatly reduce the seepage pressure loading on the lining and the groundwater discharge in drainage conditions. The seepage discharge of the unlined tunnel calculated by the proposed formulas is close to the actual monitoring data,which means that the proposed method is feasible in evaluating the water inflow of similar tunnels. Moreover,according to the correlation between the reinforcement parameters and the seepage pressure as well as the seepage discharge,it can be deduced that,with the decrease
in the permeability coefficient and with the increase in the reinforcement rim thickness,both the seepage pressure on the secondary lining and the seepage discharge decrease sharply at first,and then remain unchanged when the reinforcement parameters increase to certain values.

Key words: circular tunnel, seepage pressure, seepage discharge, reinforcement coefficient

中图分类号:

U459.2

刘福胜徐国元黄文通. 山岭隧道地下水渗流及加固参数的解析研究[J]. 华南理工大学学报(自然科学版), 2012, 40(2): 112-117,123.

Liu Fu-sheng Xu Guo-yuan Huang Wen-tong. Analytical Research on Groundwater Seepage and Reinforcement Parameters of Mountain Tunnels[J]. Journal of South China University of Technology(Natural Science Edition), 2012, 40(2): 112-117,123.