水利水电技术2017，Vol.48Issue(8)：59-62,125,5.DOI:10.13928/j.cnki.wrahe.2017.08.012
引汉济渭工程黄三段输水隧洞围岩变形与压力分析
Analysis on deformation and pressure of surrounding rock of water conveyance tunnel of Huangsan Section for Hanjiang-to-Weihe River Valley Water Diversion Project
摘要
Abstract
In order to analyze the stress and the strain of surrounding rock of deep buried long tunnel,the dynamic simulation of tunnel construction process is calculated considering tunnel construction mode and surrounding rock supporting form.Through the relevant numerical calculation,both the deformation of the surrounding rock and the relationship of the interaction between the surrounding rock and the lining after the initial support of the water conveyance tunnel of Huangsan Section of Hanjiang-to-Weihe River Valley Water Diversion Project are obtained.The calculation result shows that the adoption of the design for the initial support pattern can effectively control the deformation of the surrounding rock within the tunnel section under poor geological condition,and then the maximum convergent deformations of the surrounding rocks of Class IV and Class V can meet the requirement from the relevant design specification.The interactive force between the lining and the surrounding rocks of Class Ⅳ and Class Ⅴ is decreased along with the increase of the distance to the working face during the placement of the lining,but the decreasing amplitude is to be quite small after the distance to the working face being about four times of the tunnel diameter.The surrounding rock pressure index necessary for the design of the lining structure is determined with the result of the surrounding rock pressure obtained through the relevant comparative analysis,empirical method and numerical method,which can provide a basis for the design of the water conveyance tunnel of Huangsan Section,from which the analysis method can provide references for the similar projects as well.关键词
引汉济渭工程/输水隧洞/围岩压力/变形/数值计算/衬砌结构Key words
Hanjiang-to-Weihe River Valley Water Diversion Project/water conveyance tunnel/surrounding rock pressure/deformation/numerical calculation/lining structure分类
交通工程引用本文复制引用
赵大洲,丛苹,崔超,苏丹,宋健健,陈艳国..引汉济渭工程黄三段输水隧洞围岩变形与压力分析[J].水利水电技术,2017,48(8):59-62,125,5.基金项目
国家重点研发计划课题(2016YFC0401802) （2016YFC0401802）
