摘要
驮英水库灌区那佳—南庆隧洞岽样支洞地质围岩主要以Ⅳ、Ⅴ类为主,其中V类围岩分布大、点多、线长,基本以泥加碎石为主。掘进过程中不能爆破,极易塌方,塌方后处理难度较大,安全隐患较大。为了克服泥加碎石地质段的掘进技术难题,开展了引水隧洞泥加碎石地质条件下掘进和支护技术的研究,本文主要论述了岽样支洞的掘进和支护技术。
Dongyang adit of Najia-Nanqing tunnel in Tuoying Reservoir irrigation zone is mainly accommodated in surrounding rock of IV or V class,of which the V-class surrounding rock distributes at multiple locations in a long route and most is of mud and gravel.Blasting is not permitted for tunneling due to safety risks of collapse as well as the cleaning difficulties thereafter.In order to solve the technical problem of tunneling under geological conditions of mud and gravel,corresponding tunneling and protection technology were studied.The tunneling and protection technology adopted for Dongyang adit was presented.
作者
吕冠成
黄天炎
蔡思远
LV Guan-cheng;HUANG Tian-yan;CAI Si-yuan(Zuojiang Drought Control Project Management Center,Chongzuo 532200,China)
出处
《广西水利水电》
2020年第6期69-71,共3页
Guangxi Water Resources & Hydropower Engineering
关键词
掘进技术
防护措施
隧洞施工
岽样支洞
驮英水库灌区
Tunneling technology
protection measures
tunnel construction
Dongyang adit
Tuoying Reservoir irrigation zone
