Strengthening mechanism and field test of high pressure rotary jet pile in soft surrounding rock of shallow buried section of tunnel
In order to prevent a wide range of collapse and other geological disasters during the excavation of weak surrounding rock in shallow buried section of tunnel,many technicians have carried out a large number of scientific and systematic studies on this.High pressure jet grouting pile is an effective method to deal with soft soil foundation,which can not only strengthen rock and soil mass,but also improve the overall effect of shallow buried soft surrounding rock.In this paper,based on the composite foundation of rotary jet pile in the open cave section at the exit of Lanzhou Nanhuan Heping Tunnel of Lian-Huo National Expressway,the mechanism of surface reinforcement of high-pressure rotary jet pile in shallow buried section of tunnel is studied,and the reinforcement design scheme and construction quality are tested systematically through field tests.
high-pressure rotary jet pilereinforcement mechanismfield test
万方数据
维普
