哈密抽水蓄能电站地下洞室超长断裂带连续大管棚施工措施参数设计
Design of Construction Measures and Parameter for Continuous Large Pipe Shed in the Underground Chambers of Hami Pumped Storage Power Station Super-Long Fault Zone
王建帮1
作者信息
- 1. 中国水利水电第五工程局有限公司, 四川 成都 610066
- 折叠
摘要
大管棚作为隧洞不良地质段施工中一种重要的加固措施,被广泛应用于各类工程实践中,但管棚的施工参数以及支护效果研究还远落后于实际工程需求,很多设计参数缺乏工程施工验证.文章结合哈密抽水蓄能电站工程数次掌子面坍塌实例,进行了管棚支护设计,采用管棚+钢筋束+钢支撑+纳米仿钢纤维混凝土封闭的支护形式,取得了较好的加固效果.研究成果可为断层破碎带隧洞管棚支护参数设计提供参考.
Abstract
The large canopy,as an important reinforcement measure for challenging geological sections in tunnel construction,is widely applied in various engineering practices.However,research on the construction parameters and support effectiveness of canopies lags far behind the actual engineering requirements,with many design parameters lacking validation through construction experience.In this paper,based on several instances of surface collapse in the Hami Pumped Storage Power Station project,canopy support design was conducted.A support system consisting of canopy,reinforced beams,steel supports,and nanomimetic steel fiber concrete sealing was employed,achieving favorable reinforcement results.The research findings can serve as a reference for the design of canopy support parameters in fault-fractured zone tunnel construction.
关键词
超长断裂带/连续大管棚/参数设计/哈密抽水蓄能电站Key words
super-long fault zone/continuous large pipe shed/parameter design/Hami Pumped Storage Power Station引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据