Based on the entrance section of Jinyanghe Tunnel on the right line of Mengla-Lvchun Expressway in Yunnan Province,it analyzes and studies the initial support penetration during the three-step construction of carboniferous shale tunnel in water-rich stratum.Targeted treatment measures are taken from deformation control,radial grouting reinforcement,support strengthening,steel frame disassembly and replacement and excavation method optimization,and the problem of initial support penetration was solved successfully and the construction safety was ensured combined with the deformation monitoring of surrounding rock.
关键词
富水地层/炭质页岩/地质预报/初期支护侵限/拱架拆换/注浆加固/监控量测/稳定性
Key words
water-rich stratum/carboniferous shale/geological forecast/initial support penetration/arch frame disassembly and replacement/grouting reinforcement/monitoring measurement/stability
维普
万方数据