水利水电技术2017，Vol.48Issue(8)：107-110,130,5.DOI:10.13928/j.cnki.wrahe.2017.08.021
基于监测的深埋引水隧道原始水头分析
Monitoring-based analysis on original water-head of deeply buried water diversion tunnel
摘要
Abstract
For the load-structure model,the analytical solution for the internal water pressure distribution of the surrounding rock after tunneling during construction is deduced out according to seepage theory under the premise of the axisymmetric assumption on the surrounding rock of deeply buried tunnel on the basis of the relevant in situ measured data,and then the correlation between the stable far-field water-head and the radius of it is studied,thus the concept and method for inversing the stable far-field water-head and the radius of it through the monitoring data of the in situ groundwater pressure of surrounding rock are proposed.By taking the tunnel through the mountain-crossing section of Hanjiang-to-Weihe River Valley Water Diversion Project as the study case,the initial water pressures of a part of tunnel sections therein and the radiuses of the stable far-field water-heads formed after tunneling are analyzed in accordance with the monitoring data of the groundwater pressure during the construction,from which the external water load on the lining structure can be obtained.The results show that stable far-field water-heads and radiuses of influence can be calculated as long as water pressure of ceratain depth in the tunnel surrounding rock is measured.For example,the water head in the depth 14 m of the surrounding rock of the section K77 +993 is 10.50 m,therefore the stable farfield water head is 39.65 m and the influnece radius is 43.65 m.The relevant references can also be provide for the drainage design concerned.关键词
隧道工程/外水压力/远场稳定水头/引汉济渭工程Key words
tunneling project/external water pressure/stable far-field water-head/Hanjiang-to-Weihe River Valley Water Diversion Project分类
建筑与水利引用本文复制引用
段庆伟,汪小刚,刘立鹏,魏军政,曹瑞琅..基于监测的深埋引水隧道原始水头分析[J].水利水电技术,2017,48(8):107-110,130,5.基金项目
陕西省引汉济渭工程建设有限公司科研项目(引汉建函[2014]93号-08-01) （引汉建函[2014]93号-08-01）
中国水利水电科学研究院基本科研业务费专项项目(GE0145B452016,GE0145B822017) （GE0145B452016,GE0145B822017）
国家重点研发计划课题(2016YFC0401804) （2016YFC0401804）
