科技创新与应用2024，Vol.14Issue(21)：193-196,4.DOI:10.19981/j.CN23-1581/G3.2024.21.046
特大断面导流隧洞施工技术在水利枢纽工程中的应用
李洋1
作者信息
- 1. 安徽省水利水电勘测设计研究总院股份有限公司,合肥 230088
- 折叠
摘要
Abstract
Taking a water control project as an example,this paper probes into the application of blasting excavation and anchor-shotcreting net combined support technology in the construction of extra-large cross-section diversion tunnel.According to the previous geological survey,the surrounding rock of the tunnel is grades Ⅱ～Ⅲ,and the surrounding rock is stable,so the operation scheme of smooth blasting and then excavation is adopted.After removing the ballast and dangerous rock,the stable working face is formed by spraying concrete on the excavation face.Then put in the bolt,hang the steel mesh and carry on the secondary lining to support the diversion tunnel and create a safe construction environment.The monitoring data of arch roof settlement show that the average daily settlement rate is 2.09 mm within 30 days after the diversion tunnel is excavated.Within the allowable range,the construction effect of this extra-large cross-section diversion tunnel is in line with the expectation.关键词
水利枢纽工程/导流隧洞/锚杆支护/回填灌浆/混凝土Key words
water control project/diversion tunnel/bolt support/backfilling grouting/concrete分类
建筑与水利引用本文复制引用
李洋..特大断面导流隧洞施工技术在水利枢纽工程中的应用[J].科技创新与应用,2024,14(21):193-196,4.
