摘要
以国道569曼德拉至大通公路宁缠隧道右线进口段为背景,介绍了宁缠隧道进口段在偏压、富水、堆积体碎石土地质条件下所采用的隧道综合施工技术;着重阐述了该段隧道外采取地表注浆加固、施作抗偏压挡墙并回填反压,隧道内采用三台阶临时仰拱施工方法、加强监控量测等措施,有效地控制了隧道的变形,保证了该段安全施工;上述施工方法在类似隧道施工中具有借鉴意义。
This text was based on the construction of the right line entrance of the Ningchan Tunnel in the section of Mande- la to Datong of the 569 National Highway, it introduced that employing comprehensive construction techniques of the tunnel under the geological conditions of unsymmetrical pressure, water-rich and gravel soil deposit during the construction, fo- cused on employing surface grouting reinforcement outside of the tunnel, bias retaining wall with infilling on opposite side, three-step temporary inverted arch method, strengthening monitoring and surveying procedures and such measures, so as to effectively control the deformation of the tunnel during the excavation. Therefore, safe construction was achieved. This could provide a useful reference for other similar works.
作者
耿福志
Geng Fuzhi(China Railway 16th Bureau Group 1st Engineering Co. Ltd. , Beijing 101300, China)
出处
《铁道建筑技术》
2017年第5期96-101,共6页
Railway Construction Technology
基金
中铁十六局集团有限公司科技研究开发计划项目(K2016-01C)
关键词
隧道
偏压堆积体
地表注浆
三台阶临时仰拱
偏压挡墙
tunnel
unsymmetrical pressure deposit
surface grouting
three-step temporary inverted arch method
bias re-taining wall
