暗挖黏土隧道复合式衬砌无锚支护研究

Study on Composite Lining No-anchor Supporting of Buried Clay Tunnel

目前城市地下道路暗挖隧道支护设计除盾构外,主要还是借鉴山岭隧道的锚喷支护,然而城市地下暗挖隧道埋深较浅、相当一部分为土质隧道,其设计施工与山岭隧道有着较大的不同。国内外众多学者对此也提出了各自的见解,尤其对土质隧道中系统锚杆的作用众说纷纭。为此,现结合工程实践从设计施工和监控等方面对城市浅埋暗挖土质隧道中锚杆的作用机理,以及作用效果进行了充分的对比研究,提出了笔者的见解,对指导以后类似环境条件下的隧道设计施工将具有重要的理论意义和经济价值。

At present,the supporting design of the buried tunnel in the urban underground road is mainly the anchor-plate retaining of mountain tunnel except shield.However the urban underground buried tunnel is shallower,quite a number of part is the soil tunnel.Its design and construction are greatly different from the mountain tunnel.Many scholars at home and abroad have put forward their own opinions,especially on the role of the system anchor bolt in the soil tunnel.Therefore,according to the engineering practices,this paper fully compares and studies the function mechanism and function effect of anchor bolt in urban shallow buried soil tunnel from the design,construction and supervision,and puts forward the opinions,which has the important theoretical significance and economic value of guiding the design and construction of tunnels under the similar environmental conditions in the future.