四川水力发电2024，Vol.43Issue(2)：47-51,5.
亭子口灌区一期工程Ⅲ标段隧洞围岩膨胀性分析
Analysis on the Swellability of Surrounding Rock of the Tunnel in the Bid Ⅲ of Tingzikou Irrigation Area Fase Ⅰ
王广巍 1于晓飞 1乔有浩 1石瑶1
作者信息
- 1. 中国电建集团成都勘测设计研究院有限公司,四川 成都 611130
- 折叠
摘要
Abstract
The Bid Ⅲ of Tingzikou Irrigation Area Fase Ⅰ Project is equipped with tunnels,aqueducts,open channels and other buildings.There are 25 tunnels,with a total length of about 41.8km,and the surrounding rock of the tunnel has a high proportion of class Ⅳ and Ⅴ,and the overall quality is poor.The surrounding rock of the tunnel is mainly composed of silty mudstone and mudstone siltstone interlayer with different thick-ness.Among them,silty mudstone and argillaceous siltstone have the characteristics of weak permeability,strong hydrophilicity,water expansion,water loss shrinkage and dry cracking.In this paper,the expansion characteristics of surrounding rock are analyzed,and the expansion parameters of surrounding rock such as free expansion rate,saturated water absorption rate and expansion force are determined through tests,which pro-vides design basis for determining the thickness of the initial support and the reinforced concrete lining and re-inforcement of the tunnel.关键词
亭子口灌区/隧洞围岩/自由膨胀率/饱和吸水率/膨胀力/膨胀岩Key words
Tingzikou Irrigation Area/Surrounding rock of tunnel/Free expansion rate/Saturated water absorp-tion/Expansive force/Swelling rock分类
建筑与水利引用本文复制引用
王广巍,于晓飞,乔有浩,石瑶..亭子口灌区一期工程Ⅲ标段隧洞围岩膨胀性分析[J].四川水力发电,2024,43(2):47-51,5.
