摘要
布罗德兰水电站引水隧洞穿过岩溶区、区域大断层带等不良地质段遭遇到突水突泥、隧洞坍塌、洞身及临时支护失稳沉降等复杂问题,采取超前固结灌浆、管棚、注浆小导管、钢拱架、挂网锚喷等综合支护治理技术,确保了工程安全和施工顺利进行。通过对开挖支护及缺陷治理过程中的经验、问题分析,可为类似工程提供借鉴。
The diversion tunnel of Broadland Hydropower Station encountered complicated problems such as water and mud gushing, tunnel collapse, tunnel body and temporary support instability settlement while passing through geological sections of karst area and large fault zone. Safety and construction of this Project are ensured through comprehensive support and treatment technologies as advanced consolidation grouting, pipe shed, small grouting pipe, steel arch frame, and hanging net anchor spray. Through analysis on experience and problems in the process of excavation, support and defect management, it can provide reference for similar projects.
作者
盛晓波
SHENG Xiaobo(Hunan Hydro & Power Design Institute, Changsha 41007, China)
出处
《广东水利水电》
2019年第9期16-21,共6页
Guangdong Water Resources and Hydropower
关键词
水电站
引水隧洞
涌水突泥
岩溶坍塌
加固治理
hydropower station
diversion tunnel
water and mud gushing
karst collapse
reinforcement treatment
