隧道浅埋段施工技术

以新建张家界至吉首至怀化铁路鲁家庄隧道浅埋段施工为实例,从地面处理、监控量测、超前地质预报、超前支护、开挖、支护等几个方面对浅埋段施工技术进行阐述,集中体现隧道浅埋施工应遵循"弱爆破、短进尺、强支护、快封闭、勤量测、早衬砌"的原则,有效地保证了隧道的安全、快速掘进,为后续的浅埋段和同类工程提供经验和借鉴。

Construction Technology of Shallow Buried Section of Tunnel

Taking the construction of shallow buried section of Lujiazhuang Tunnel on the newly built Zhangjiajie-Jishou-Huaihua Railway as an example,this paper expounds the construction technology of shallow buried section from several aspects,such as the key control of ground treatment,monitoring and measurement,advanced geological prediction,advanced support,excavation and support,etc.It mainly reflects that the shallow buried construction of tunnel should follow the following principles:"Weak blasting,short footage,strong support,fast closing,diligent measurement,early lining",to effectively guarantee the safe and rapid tunneling of the tunnel and provide experience and reference for the following shallow buried sections and similar projects.