四川水力发电2024，Vol.43Issue(z2)：86-89,123,5.
大型地下洞室初支完成洞段塌方处理施工技术研究
Research on Construction Technology of Cave-in Treatment of Large Underground Cavern after Initial Support
黄欧1
作者信息
- 1. 中国安能集团第三工程局有限公司,四川 成都 611135
- 折叠
摘要
Abstract
When the middle and lower layers of a large underground cavern are excavated,the upper half of the cavern has been initially completed.Compared with the cave-in during the excavation of the upper half of the cavern,the cave-in at this time is larger in scale and the upper cavity will be higher and the cave-in system is formed by the accumulation of a large number of blocks of stones.The cavities between the blocks are large,and the upper steel supports are also mixed in the cave-in,conventional supporting means such as small conduit grouting and pipe shed are not applicable.Taking the treatment of cave-in in the upper half of the cave-in hole which has been excavated and supported during the middle level excavation of the spillway tunnel in Pangduo Water Conservancy Project in Xizang Province as an example,the treatment and construction of the cave-in sec-tion are successfully completed according to the principles of section disposal,strengthening support,clearing first and filling later,ensuring safe construction.关键词
旁多水利枢纽/大型洞室/先清后填/分段处置/塌方/施工技术Key words
Pangduo Water Conservancy Project/Large cavern/First clean and then fill/Segmented disposal/Ca-ve-in/Construction technology分类
建筑与水利引用本文复制引用
黄欧..大型地下洞室初支完成洞段塌方处理施工技术研究[J].四川水力发电,2024,43(z2):86-89,123,5.
