摘要
谷竹高速公路青峰隧道为膨胀性构造偏压软弱围岩隧道,施工中多次出现险情,后经实践验证及多方论证,采用"刚柔结合、加强支护整体性、加强超前支护、加强锁脚支护、控制性注浆加固"的控制理念,结集"跳跃式"刚柔结合拱架支护技术、"整体式"刚性锁脚支护技术、无损伤"密棚式"超前预支护技术、控制注浆技术于一体,成功地突破了大变形段的施工,化解了施工风险,保证了工程施工的安全和质量。
Qingfeng Tunnel of Gucheng-Zhuxi Expressway is a kind of expanding inhomogeneous-pressure weak surrounding rock tunnel. Dangerous matters have occurred many times in its construction. Latterly, through practical verification, the control concepts of ＂rigid-flexible combination, emphasizing the integrity of support, pre-support, locking support, and controlling grouting reinforcement＂ are adopted, with a combination of ＂jumping＂ rigid-soft arch grid support technology, ＂unitary＂ rigid locking support technology, non-damaged ＂dense-shield＂ pre-support technology, and control grouting technology, it successfully solves difficulties in massive deformation section, eliminates dangers in construction, and ensures the safety and quality of the construction.
作者
刘秀芝
Liu Xiuzhi(China Railway 14^th Bureau Group 2^nd Engineering Co.Ltd.,Tai＇ an Shandong 271000,China)
出处
《铁道建筑技术》
2018年第7期69-72,共4页
Railway Construction Technology
基金
中铁十四局集团有限公司科技研发计划项目(KJ11-02)
关键词
大变形
跳跃式
整体式
超前预支护
注浆
刚柔结合
massive-deformation
jumping
unitary
advanced pre-support
grouting
rigid-flexible combination
